Free Alternatives to Diffchecker

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Free replacement verdicts

Diffchecker logo

Free Alternatives to Diffchecker

Zero-cost replacements grouped by fit, tradeoffs, pricing friction, and platform access. Use this list to test Diffchecker before paying for another subscription.

Switching from Diffchecker doesn't have to cost a thing. We've curated 20 free-tier alternatives that cover similar workflows, from APIs & Data Feeds to Diff View and beyond. Each pick below is framed by fit, caveats, and access friction so you can trial replacements without opening your wallet.

Disclosure: outbound links may include affiliate or sponsor links

Which Alternative Should You Use?

Semrush logo

Semrush

Closest replacement

Best for: Investors and operators using SEO, paid search, web traffic, and AI visibility as alternative data for digital businesses.

  • Semrush best matches the base workflow on research reports, AI research workspace, and AI agent data access.
  • Semrush also has a free plan, so you can try it without paying. Free-plan limits: Signup required. Credit card required. Free account and paid-plan trials are limited.

Watch for: Marketing platform, not investing software: Semrush does not provide portfolio tracking, valuation models, broker execution, or official company fundamentals.

Trading Economics logo

Trading Economics

Quality-checked pick

Best for: Developers and analysts needing macro indicators, economic calendar data, markets data, forecasts, financials, Excel/Sheets integrations, and API/WebSocket delivery.

  • Trading Economics best matches the base workflow on AI agent data access, fundamental research, and API and market data.
  • Trading Economics also has a free plan, so you can try it without paying. Free-plan limits: API pricing page lists Standard at $199/month or $149/month equivalent billed yearly.

Watch for: Real API use is paid: Guest credentials are limited/sample access. API plans offer monthly, quarterly, and yearly billing.

Changeflow (Trackly) logo

Changeflow (Trackly)

Strong runner-up

Best for: Compliance, regulatory, and investment research teams monitoring filings, agency pages, policies, competitor pages, PDFs, RSS feeds, and API endpoints.

  • Changeflow (Trackly) best matches the base workflow on research reports, AI research workspace, and AI agent data access.
  • Changeflow (Trackly) also has a free plan, so you can try it without paying. Free-plan limits: Signup required. Every plan has a 30-day free trial with no credit card required.

Watch for: API requires Business or Enterprise: Professional does not include API access. API and webhooks are included on Business and Enterprise plans.

TickerTrends logo

TickerTrends

Strong runner-up

Best for: Investors, analysts, and funds using alternative data such as search, web traffic, app usage, social, news, reviews, and transcripts to forecast company KPIs before earnings.

  • TickerTrends best matches the base workflow on investment research workspace, research reports, and AI agent data access.
  • TickerTrends also has a free plan, so you can try it without paying. Free-plan limits: Signup required. TickerTrends Core is $998 per year after a seven-day trial and carries a 30-day money-back guarantee.

Watch for: Alternative data is noisy: Search, social, traffic, and app signals are proxies for business performance. Users need modeling discipline, validation, and company-specific KPI context.

Detailed Alternatives

I want to

Free tiers first, then the lowest starting price.

1

Bottom line: Researchers checking what an investor-relations page, product site, pricing page, fund page, or disclosure showed at a point in time.

Keep

  • APIs & Data Feeds

Gain

  • Citations & Source Pinning
  • Other

Lose

  • Diff View
  • Desktop access

Watch out

  • Avoid as a full replacement if you rely on AI research workspace, backtesting and quant research, and filings and transcript research.
  • Free-plan limits: Internet Archive documents multiple Wayback Machine APIs for capture discovery and access. Save Page Now is available without payment, but some options require a free Internet Archive account. The service applies rate limits and may pause captures for a target host.
  • Coverage is not guaranteed: Target sites may block crawling, fail replay, require login, or have missing captures.
Cost
Free, no signup

Free onlyno paid tier

$15/mo less than Diffchecker

2
Perplexity Finance logo
Partial replacement

Perplexity Finance

Analyst pickTested by us

Bottom line: Users looking for cited AI answers over finance pages, filings, news, charts, watchlists, screeners, ownership data, and earnings documents.

Keep

  • APIs & Data Feeds

Gain

  • Screeners
  • Watchlist
  • Data Visualizations
  • News

Lose

  • Diff View
  • Other coverage
  • Desktop access

Watch out

  • Avoid as a full replacement if you rely on investment research workspace and research reports.
  • Free-plan limits: Free consumer plan includes 3 Pro searches per day. Pro is listed locally at $20/month and Max at $200/month for consumer access. Agent API finance_search is billed at $0.005 per invocation, or $5 per 1,000 invocations, with model tokens billed separately.
  • AI answer quality still needs review: Perplexity cites sources, but investment conclusions, calculations, and data joins should be verified before use.
Cost
Free, no signup

$20/moto go paid

$5/mo more than Diffchecker

3
Trading Economics logo
Quality-checked pick

Trading Economics

Tested by us

Bottom line: Developers and analysts needing macro indicators, economic calendar data, markets data, forecasts, financials, Excel/Sheets integrations, and API/WebSocket delivery.

Keep

  • APIs & Data Feeds

Gain

  • Macro Data
  • Calendar
  • Alerts
  • News

Lose

  • Diff View

Watch out

  • Avoid as a full replacement if you rely on investment research workspace, research reports, and AI research workspace.
  • Free-plan limits: API pricing page lists Standard at $199/month or $149/month equivalent billed yearly. API pricing page lists Professional at $399/month or $299/month equivalent billed yearly. Paid one-week trials are nonrefundable, auto-renew unless canceled, and allow 100 requests or 100,000 data points.
  • Real API use is paid: Guest credentials are limited/sample access. API plans offer monthly, quarterly, and yearly billing.
Cost
Free, no signup

$29.99/moto go paid

$14.99/mo more than Diffchecker

4
Similarweb logo
SimilarwebPartial replacement
4
Similarweb logo
Partial replacement

Similarweb

Tested by us

Bottom line: Investors and operators researching digital businesses through website traffic, app usage, keyword demand, and competitive benchmarks.

Keep

  • APIs & Data Feeds

Gain

  • App & Website Traffic
  • Sheets / Excel Add-ins
  • Data Visualizations

Lose

  • Diff View
  • Desktop access

Watch out

  • Avoid as a full replacement if you rely on investment research workspace, AI agent data access, and backtesting and quant research.
  • Free-plan limits: Free website/app snapshots are limited. Self-service packages and trials are referenced for individuals, entrepreneurs, and small teams, but current package pages do not expose public prices. Business, enterprise, API, and module-heavy workflows require sales/custom pricing.
  • Modeled data, not reported financials: Traffic, app, keyword, and company estimates are proxy signals and need validation against filings, disclosures, and other datasets.
Cost
Free, no signup

Free • Contact for pricing

5
EODHD logo
EODHDPartial replacement
5
EODHD logo
Partial replacement

EODHD

Analyst pickTested by us

Bottom line: Developers and quants needing market data APIs across equities, ETFs, funds, forex, crypto, and options.

Keep

  • APIs & Data Feeds

Gain

  • Calendar
  • News
  • News Sentiment
  • Dividends

Lose

  • Diff View

Watch out

  • Avoid as a full replacement if you rely on investment research workspace, research reports, and AI research workspace.
  • Free-plan limits: Signup required. Free plan shows 20 API calls per day. Paid personal plans default to 100,000 daily API calls.
  • Free API quota is very limited: 20 API calls per day on the Free plan.
Cost
Free with signup

$19.99/moto go paid

$4.99/mo more than Diffchecker

6
Financial Modeling Prep (FMP) logo
Financial Modeling Prep (FMP)Partial replacement
6
Financial Modeling Prep (FMP) logo
Partial replacement

Bottom line: Developers and analysts needing REST/WebSocket market data, fundamentals, calendars, transcripts, ownership, ESG, and macro datasets.

Keep

  • APIs & Data Feeds

Gain

  • Screeners
  • News
  • Calendar
  • Dividends

Lose

  • Diff View

Watch out

  • Avoid as a full replacement if you rely on investment research workspace, research reports, and AI research workspace.
  • Free-plan limits: Signup required. Basic plan is limited to 250 API calls per day. Free tier has end-of-day timeframe, around 5 years of history, and limited bandwidth.
  • Free sandbox is limited: The Basic plan is capped at 250 API calls per day, end-of-day timeframe, and around 5 years of history.
Cost
Free with signup

$22/moto go paid, billed yearly

$7/mo more than Diffchecker

7
Portfolio123 logo
Portfolio123Partial replacement
7
Portfolio123 logo
Partial replacement

Portfolio123

Analyst pickTested by us

Bottom line: Rules-based investors looking for point-in-time stock and ETF simulations.

Keep

  • APIs & Data Feeds

Gain

  • Screeners
  • Data Visualizations
  • Quant
  • Stock Ideas

Lose

  • Diff View
  • Other coverage

Watch out

  • Avoid as a full replacement if you rely on investment research workspace, research reports, and AI research workspace.
  • Free-plan limits: Signup required. Free Manage module is separate from paid Research, API, and DataMiner access. General registration offers 30 days of screener and backtesting access without a payment card.
  • Advanced research is paid: Free Manage covers portfolio tracking. Time-limited access covers screener and backtesting use before a paid Research plan, while API and DataMiner require separate paid access.
Cost
Free with signup

$25/moto go paid, billed yearly

$10/mo more than Diffchecker

8
Ahrefs logo
AhrefsPartial replacement
8
Ahrefs logo
Partial replacement

Ahrefs

Tested by us

Bottom line: Investors and operators using search visibility, backlinks, web traffic estimates, and AI-brand visibility as alternative demand signals.

Keep

  • APIs & Data Feeds

Gain

  • App & Website Traffic

Lose

  • Diff View
  • Desktop access

Watch out

  • Avoid as a full replacement if you rely on investment research workspace, options and trading workflows, and backtesting and quant research.
  • Free-plan limits: Signup required. Free Ahrefs access is limited, especially for unverified competitor sites. Paid tiers scale projects, exports, historical data, tracked keywords/prompts, crawl credits, and API units.
  • Marketing platform, not investing software: Ahrefs does not provide company fundamentals, broker data, portfolio tracking, or valuation models.
Cost
Free with signup

$29/moto go paid

$14/mo more than Diffchecker

9
Fiscal.ai logo
Fiscal.aiPartial replacement
9
Fiscal.ai logo
Partial replacement

Fiscal.ai

Analyst pickTested by us

Bottom line: Investors who want AI-assisted company research backed by financials, estimates, transcripts, filings, and dashboards.

Keep

  • APIs & Data Feeds

Gain

  • Stock Ideas
  • Screeners
  • Stock Comparison
  • Data Visualizations

Lose

  • Diff View
  • Other coverage
  • Desktop access

Watch out

  • Avoid as a full replacement if you rely on investment research workspace, research reports, and options and trading workflows.
  • Free-plan limits: Signup required. Free terminal access has dashboard, history, event, and AI prompt limits. Free API access covers 100 companies, 50 requests per minute, and 250 requests per day.
  • Free access is limited: The free API is limited to 100 companies, 50 requests per minute, and 250 requests per day. Deeper history, exports, and some datasets require paid plans.
Cost
Free with signup

$39/moto go paid

$24/mo more than Diffchecker

10
OpenBB logo
OpenBBPartial replacement
10
OpenBB logo
Partial replacement

Bottom line: Analysts and teams looking for a customizable financial workspace that connects their own data, vendors, dashboards, and AI agents.

Keep

  • APIs & Data Feeds

Gain

  • Sheets / Excel Add-ins
  • Data Visualizations
  • Custom Dashboards
  • AI Research

Lose

  • Diff View
  • Other coverage

Watch out

  • Avoid as a full replacement if you rely on research reports.
  • Free-plan limits: Signup required. An August 25, 2026 founder update says OpenBB will release Workspace, ODP, Copilot, and Excel Add-in as open source; release timing and hosted-product transitions are pending. Community Edition is free for individuals.
  • Does not provide production market data: OpenBB says Workspace includes a limited FMP-powered sandbox, but organizations connect their own datasets for production workflows.
Cost
Free with signup

$41.67/moto go paid, billed yearly

$26.67/mo more than Diffchecker

11
GuruFocus logo
GuruFocusPartial replacement
11
GuruFocus logo
Partial replacement

GuruFocus

Analyst pickTested by us

Bottom line: Value investors looking for long historical fundamentals, GF Score, GF Value, and guru/institutional holdings.

Keep

  • APIs & Data Feeds

Gain

  • Stock Ideas
  • Screeners
  • ETF Screeners
  • Top Analysts

Lose

  • Diff View
  • Desktop access

Watch out

  • Avoid as a full replacement if you rely on investment research workspace, research reports, and AI research workspace.
  • Free-plan limits: Signup required. A free account has limited access. Free members have limited portfolio capacity.
  • Paid access is region and tier dependent: Annual paid memberships, region add-ons, API plans, and pay-as-you-go API credits.
Cost
Free with signup

$45.75/moto go paid, billed yearly

$30.75/mo more than Diffchecker

12
TickerTrends logo
TickerTrendsPartial replacement
12
TickerTrends logo
Partial replacement

Bottom line: Investors, analysts, and funds using alternative data such as search, web traffic, app usage, social, news, reviews, and transcripts to forecast company KPIs before earnings.

Keep

  • APIs & Data Feeds

Gain

  • Stock Ideas
  • Screeners
  • Stock Comparison
  • Data Visualizations

Lose

  • Diff View
  • Desktop access

Watch out

  • Avoid as a full replacement if you rely on AI research workspace and options and trading workflows.
  • Free-plan limits: Signup required. TickerTrends Core is $998 per year after a seven-day trial and carries a 30-day money-back guarantee. KPI Tracking Suite is custom priced with a trial available by request.
  • Alternative data is noisy: Search, social, traffic, and app signals are proxies for business performance. Users need modeling discipline, validation, and company-specific KPI context.
Cost
Free with signup

$83.17/moto go paid, billed yearly

$68.17/mo more than Diffchecker

13
Changeflow (Trackly) logo
Changeflow (Trackly)Partial replacement
13
Changeflow (Trackly) logo
Partial replacement

Bottom line: Compliance, regulatory, and investment research teams monitoring filings, agency pages, policies, competitor pages, PDFs, RSS feeds, and API endpoints.

Keep

  • APIs & Data Feeds

Gain

  • Alerts
  • News
  • Regulatory Filings Monitoring
  • Insider Data

Lose

  • Diff View
  • Desktop access

Watch out

  • Avoid as a full replacement if you rely on investment research workspace and backtesting and quant research.
  • Free-plan limits: Signup required. Every plan has a 30-day free trial with no credit card required. Professional is listed at $99/month billed annually; Business is listed at $249/month billed annually.
  • API requires Business or Enterprise: Professional does not include API access. API and webhooks are included on Business and Enterprise plans.
Cost
Free with signup

$99/moto go paid, billed yearly

$84/mo more than Diffchecker

14
Reflexivity logo
ReflexivityPartial replacement
14
Reflexivity logo
Partial replacement

Bottom line: Institutional investors that want explainable AI research over trusted financial datasets, filings, transcripts, portfolio insights, scenario analysis, and auditable outputs.

Keep

  • APIs & Data Feeds

Gain

  • Screeners
  • Quant
  • Performance Attribution
  • Scenario & Stress Tests

Lose

  • Diff View
  • Other coverage
  • Desktop access

Watch out

  • Avoid as a full replacement if you rely on AI agent data access.
  • Free-plan limits: Signup required. Interactive Brokers lists Reflexivity Basic as free and Reflexivity Plus at $99.99 per month. IBKR subscriptions begin with a two-week trial of the full platform, then move to Basic or the paid version.
  • Direct access is sales-led: Institutional access requires a sales conversation. Public pricing is available only for the IBKR Basic and Plus subscriptions.
Cost
Free with signup

$99.99/moto go paid

$84.99/mo more than Diffchecker

15
Semrush logo
SemrushClosest replacement
15
Semrush logo
Closest replacement

Bottom line: Investors and operators using SEO, paid search, web traffic, and AI visibility as alternative data for digital businesses.

Keep

  • APIs & Data Feeds

Gain

  • App & Website Traffic
  • Sheets / Excel Add-ins
  • Blogs

Lose

  • Diff View
  • Desktop access

Watch out

  • Avoid as a full replacement if you rely on investment research workspace.
  • Free-plan limits: Signup required. Credit card required. Free account and paid-plan trials are limited.
  • Marketing platform, not investing software: Semrush does not provide portfolio tracking, valuation models, broker execution, or official company fundamentals.
Cost
Free, card required

$139/moto go paid

$124/mo more than Diffchecker

16
Listen Notes logo
Listen NotesPartial replacement
16
Listen Notes logo
Partial replacement

Bottom line: Investors and builders who treat podcast mentions, executive interviews, industry podcasts, and expert conversations as alternative research inputs.

Keep

  • APIs & Data Feeds

Gain

  • Alerts
  • Education
  • Other

Lose

  • Diff View
  • Desktop access

Watch out

  • Avoid as a full replacement if you rely on investment research workspace, AI research workspace, and options and trading workflows.
  • Free-plan limits: Signup required. Free API access includes 150 requests each month and requires no credit card. Pro costs $0 in a billing cycle with no successful requests and $200 once the account makes at least one successful request.
  • Podcast data is indirect: Podcast mentions are useful context but are not verified financial statements, market prices, or regulated disclosures.
Cost
Free with signup

$200/moto go paid

$185/mo more than Diffchecker

17
Calcbench logo
CalcbenchPartial replacement
17
Calcbench logo
Partial replacement

Bottom line: Accounting research that needs traceable SEC filing numbers, footnotes, disclosures, redlines, Excel workflows, and API access.

Keep

  • Diff View
  • APIs & Data Feeds

Gain

  • Financials
  • Improved Filings
  • Stock Comparison
  • Flags

Lose

  • Other coverage

Watch out

  • Avoid as a full replacement if you rely on investment research workspace, AI research workspace, and options and trading workflows.
  • Free-plan limits: Signup required. Calcbench public pages advertise a free Basic tier and a two-week Premium trial. Pricing lists Basic as free, Premium at $6,000 per user yearly, and Professional at $12,000 per user yearly.
  • SEC-centered coverage: Calcbench centers on SEC-reporting companies and EDGAR disclosures, not global market data.
Cost
Free with signup

$500/moto go paid, billed yearly

$485/mo more than Diffchecker

18
MarineTraffic logo
MarineTrafficPartial replacement
18
MarineTraffic logo
Partial replacement

Bottom line: Investors and operators using vessel movements, port calls, congestion, and AIS history as shipping, commodity, trade, or supply-chain alternative data.

Keep

  • APIs & Data Feeds

Gain

  • Data Visualizations
  • Shipping & Trade
  • Alerts

Lose

  • Diff View
  • Desktop access

Watch out

  • Avoid as a full replacement if you rely on investment research workspace, AI research workspace, and AI agent data access.
  • Free-plan limits: Signup required. A free account is available, and Basic, Essential, and Enterprise are the named online plans; current public prices are inaccessible. The purchase flow offers a 7-day trial, requires a single-user license, and states that payments are non-refundable.
  • API is account-specific: MarineTraffic API services use API keys but are not included automatically with an online plan. Access depends on the account's contract.
Cost
Free with signup

Free • Contact for pricing

19
Börsdata logo
BörsdataPartial replacement
19
Börsdata logo
Partial replacement

Bottom line: Nordic and European investors looking for a fundamentals-rich screener, reports, owner data, technical charts, and dividend research.

Keep

  • APIs & Data Feeds

Gain

  • Screeners
  • Stock Ideas
  • Data Visualizations
  • Index Rebalancing

Lose

  • Diff View
  • Desktop access

Watch out

  • Avoid as a full replacement if you rely on investment research workspace, research reports, and AI research workspace.
  • Free-plan limits: Signup required. Free account has limited access. Full data requires Premium, Pro, Pro+, or Enterprise.
  • Best value is Nordic-first: Global coverage exists on higher tiers, but Börsdata is strongest for Nordic equities and Nordic ownership/insider workflows.
Cost
Free with signup

Free • Contact for pricing

20
OpenCorporates logo
OpenCorporatesPartial replacement
20
OpenCorporates logo
Partial replacement

Bottom line: Researchers, investigators, and data teams that need legal-entity records linked to official sources.

Keep

  • APIs & Data Feeds

Gain

  • Regulatory Filings Monitoring
  • Other

Lose

  • Diff View
  • Desktop access

Watch out

  • Avoid as a full replacement if you rely on investment research workspace, AI research workspace, and options and trading workflows.
  • Free-plan limits: Signup required. Website access requires signup for selected company attributes. Essentials is GBP 225 monthly or GBP 2,250 annually; Starter is GBP 660 monthly or GBP 6,600 annually; Basic is GBP 1,200 monthly or GBP 12,000 annually.
  • Commercial use is paid: Website access is free for personal or public-benefit use. Commercial API access and bulk data require paid plans.
Cost
Free with signup

Free • Contact for pricing

What This Shortlist Tells You

Semrush is the closest drop-in replacement with overlapping coverage in APIs & Data Feeds while adding App & Website Traffic and Sheets / Excel Add-ins coverage and Traffic Analytics examines website visitors, sources, engagement metrics, and competitive benchmarks. and Rich API suite: Standard API for SEO Toolkit Business users, Trends API, Listing Management API for Semrush Local users, and Map Rank Tracker API. Current versions support API key and OAuth 2.0 flows depending on endpoint family. features (workflow overlap ~50%).

Every pick keeps a free tier; start with Semrush, Changeflow (Trackly), and TickerTrends to road-test Diffchecker workflows without paying up front.

Need mobile access? Semrush, Trading Economics, and GuruFocus bring phone-ready workflows that Diffchecker lacks.

Round out your stack with new coverage areas like App & Website Traffic, Sheets / Excel Add-ins, Blogs, and Alerts.

Coverage Snapshot

Where alternatives already align

Most shared categories across the top matches.

New angles introduced

Categories the alternatives add beyond Diffchecker.

Free Access & Pricing

Free to start

All 20

All 20 have a standing free tier, not a trial.

Paid plans from

$19.99/mo

EODHD is the cheapest paid upgrade. Diffchecker starts at $15/mo.

Mobile app

8 of 20

8 add a mobile app that Diffchecker lacks.

API access

20 of 20

20 expose an API or data feed, usually on a paid plan.

Hands-on tested

9 of 20

9 tested hands-on. 5 are analyst picks.

Coverage overlap

53%

Average share of Diffchecker categories each alternative covers.

Free Alternatives FAQ

What are the best free alternatives to Diffchecker?

Semrush, Changeflow (Trackly), and TickerTrends cover the most Diffchecker workflows without a paid plan, in that order.

Do these picks stay permanently free?

Yes. Every tool listed has a standing free tier, not a trial. Expect caps on exports, seats, or history once you use it heavily.

Which Diffchecker workflows stay covered on the free plan?

The free plans cover APIs & Data Feeds and Diff View. Core Diffchecker workflows in those areas do not need a paid upgrade.

What extra coverage do the free alternatives add?

The free alternatives add App & Website Traffic, Sheets / Excel Add-ins, Blogs, Alerts, News, Regulatory Filings Monitoring, Insider Data, Institutional Ownership, Transcripts, AI Research, AI Chat, Webhooks, Stock Ideas, Screeners, Stock Comparison, Data Visualizations, Quant, Backtesting, News Sentiment, Market Sentiment, Reddit, Financials, Scores, Improved Filings, Earnings Calls Sentiment, Analyst Forecasts, Employee/Consumer Reviews, Custom Dashboards, Education, Newsletters, Flags, Management Compensation, Macro Data, Calendar, Credit Ratings & Outlooks, Dividends, IPO, Splits, ETF Screeners, Top Analysts, ETF Comparison, Correlation, Portfolio, Watchlist, US Government Trades, Corporate Actions & Special Situations, Yield Curves, Valuation Models, Short Interest, Options, ETF Analysis, Fund Analysis, Analyst Ratings & Price Targets, Broker Connectors, Videos, Forums, Stock Handbook, ESG Ratings, Research Templates, Other, Shipping & Trade, Performance Attribution, Scenario & Stress Tests, Index Rebalancing, Factor Exposure, and Citations & Source Pinning, which Diffchecker does not cover.

Where might I still rely on Diffchecker?

Diff View stay with Diffchecker. Keep it for those tasks, or budget for a paid plan elsewhere if they matter.

Feedback

Missing an alternative, or is a listing out of date? Tell me and I will look.

Curation & Accuracy

This directory blends AI‑assisted discovery with human curation. Entries are reviewed, edited, and organized with the goal of expanding coverage and sharpening quality over time. Your feedback helps steer improvements (because no single human can capture everything all at once).

Details change. Pricing, features, and availability may be incomplete or out of date. Treat listings as a starting point and verify on the provider’s site before making decisions. If you spot an error or a gap, send a quick note and I’ll adjust.