★ BEST INVESTING TOOLS COMPARISON ★
VOL. XCIV, NO. 247
Tool comparison edition
Tool Comparison
Fiscal.ai vs Letters and Reviews
Fiscal.ai
Best for screeners and stock comparison
Free • From $468/yr
Letters and Reviews
Best for stock ideas and institutional ownership
Free
Outbound links may include affiliate or sponsor codes.
The verdict
The bottom line
Fiscal.ai and Letters and Reviews cover a lot of the same ground (3 shared categories, stock ideas, institutional ownership, and blogs), so for the basics you won't go far wrong with either. Fiscal.ai simply does more: 29 categories to Letters and Reviews's 3, including screeners, stock comparison, and data visualizations. Letters and Reviews counters by being completely free.
Key differences at a glance
- Real-time data
- Fiscal.ai
- Free trial
- Fiscal.ai14 days
- Broader coverage
- Fiscal.ai29 vs 3 categories
- API access
- Fiscal.ai
- Asset coverage
- Fiscal.aiAdds mutual funds and funds
- Free plan
- Both
Choose
Fiscal.ai if…
- Delayed quotes won't cut it; you need real-time data
- You want an API so you can script or automate things
- You care about screeners, stock comparison, and data visualizations, things Letters and Reviews doesn't offer
- You're a long-term investor who cares more about fundamentals than headlines
Choose
Letters and Reviews if…
- Letters and Reviews's overall approach simply feels right to you; they're close on paper
Comparison snapshot
| Attribute | | |
|---|---|---|
| Pricing & plans | ||
Starting price | Free • From $468/yr | Free |
Free tier | Yes | Yes |
Free trial | 14 days | — |
Plan limits | 61 limits: Terminal - Free: financials history (annual): 10, Terminal - Free: financials history (quarterly): 6 +59 more | — |
| Platforms & access | ||
Web app | Yes | Yes |
Mobile app | No | No |
API access | Yes | No |
Broker sync | No | — |
Integrations | MCP, Claude Connector +7 more | — |
| Audience & fit | ||
Experience level | Beginner, Intermediate, Advanced | Beginner, Intermediate, Advanced |
Best for | Retail Traders, Pro Retail +11 more | — |
Categories covered | 29 | 3 |
Regions | North America, Europe, APAC, LatAm, Middle East, Africa | North America, Europe, APAC |
| Data & capabilities | ||
Data quality | 3 signals: Latency: Real-time, 15-min Delayed, and End of Day, Granularity: EOD +1 more | — |
Data partners | 5 partners: Fiscal.ai Data Feed, S&P Global Market Intelligence +3 more | — |
Capabilities | 6 signals: Custom formulas, Universe builder +4 more | — |
Security | SOC2 and Status page | — |
| Try it | Visit Fiscal.ai | Visit Letters and Reviews |
Standout features
What Fiscal.ai does best
- Modern web-based research terminal with dashboards, customizable watchlists, portfolio views, and visualizations across 100,000+ global stocks, ETFs, mutual funds, and funds.
- Deep fundamentals and segment/KPI coverage, including proprietary KPI feeds for 2,250+ companies in the pricing table and largest 2,300 companies globally by market capitalization in API docs; history depth scales by plan tier.
- AI Copilot for conversational research plus AI summaries and AI-generated reports, designed to speed up earnings, filings, and peer comparisons.
- Fiscal MCP is now documented as a first-class integration surface: Fiscal.ai is an official Claude Connector, and the same Streamable HTTP MCP endpoint works with ChatGPT developer mode, Cursor, Codex CLI, VS Code Copilot, Gemini CLI and other MCP clients via OAuth or API-key bearer auth.
- Fiscal Skills provide packaged analyst workflows for MCP clients, including financials pull, three-statement model, segments/KPIs, comp set, valuation, industry report, ownership activity, filing finder, quality scores and earnings reaction.
What Letters and Reviews does best
- Quarterly **Fund Manager Letters** pages with the fund name, date, and a "Stocks Mentioned" column (tickers link out for quick lookup); latest public quarter observed is Q4 2025.
- Quarterly **13-F pages** the author reads, with many entries including holdings tables and position-change flags (e.g., NEW / Sold Out / % of portfolio).
- Lightweight **About** page clarifies the goal: stock-idea discovery from letters; author shares links and invites tips via @_iinvested.
- A small **Podcasts** page curating investing/finance episodes the author plans to re-listen to.
Data & access details
| Attribute | | |
|---|---|---|
| Coverage & fit | ||
Asset types | StocksETFsMutual FundsFunds | StocksETFs |
Experience | BeginnerIntermediateAdvanced | BeginnerIntermediateAdvanced |
Target audience | Retail TradersPro RetailInstitutional InvestorsAnalystsQuants/DevelopersLong-term InvestorsValue InvestorsGrowth Investors+5 more | Not specified |
Regions | North AmericaEuropeAPACLatAmMiddle EastAfrica | North AmericaEuropeAPAC |
Coverage details | Identifiers: Ticker, CUSIP, ISIN, and FIGI | Identifiers: Ticker |
| Data | ||
Data freshness | Real-time15-min DelayedEnd of Day | Not specified |
Data granularity | EOD | Not specified |
Data partners | Fiscal.ai Data FeedS&P Global Market IntelligenceMorningstarYChartsPerplexity | Not specified |
| Access & integrations | ||
API protocols | REST | Not specified |
API auth & delivery | Auth: APIKeyWebhooks50 req/minDocs | Not specified |
Import methods | Manual | Not specified |
Integrations | MCPClaude ConnectorChatGPTCodex CLICursorVS Code CopilotGemini CLIPerplexity+1 more | Not specified |
Export formats | CSVImagePDF | Not specified |
| Plans & trust | ||
Security & compliance | SOC2Status page | Not specified |
Capability signals | Custom formulasUniverse builderPerformance attributionPortfolio attributionCitation pinningAI summaries: Filings, Transcripts, and News | Not specified |
Vendor & support | Stratosphere Technology Inc.Country: CanadaFounded 2021Support: Email | Letters and Reviews (Blogger)Support: Email |
Curation ratings | Methodology 5/5Reliability 4/5UX 5/5 | Methodology 3/5Reliability 3/5UX 3/5 |
Green tags are exclusive to that tool in this comparison.
Pricing breakdown
$468/yr
Starting price
Plans & pricing
- financials history (annual): 10
- financials history (quarterly): 6
- +8 more
- financials history (annual): 15
- financials history (quarterly): 20
- +10 more
- financials history (annual): 15
- financials history (quarterly): 20
- +10 more
- financials history (annual): 20+
- financials history (quarterly): 40+
- +10 more
- financials history (annual): 20+
- financials history (quarterly): 40+
- +10 more
- api calls per day: 250
- burst requests per minute: 50
- +1 more
Free
Lower starting price
Plans & pricing
Coverage overlap
Shared categories
3Where the two tools cover the same ground.
Fiscal.ai strengths
26What you only get with Fiscal.ai.
Letters and Reviews strengths
0What you only get with Letters and Reviews.
No unique categories.
Community category leaders
Vote sentiment comparison
Loading sentiment chart...
Frequently Asked Questions
What's the difference between Fiscal.ai and Letters and Reviews?
Fiscal.ai leans toward stock ideas, screeners, and stock comparison, while Letters and Reviews puts more weight on stock ideas, institutional ownership, and blogs. They overlap in 3 categories, so for most people it comes down to workflow preference and price.
How much do Fiscal.ai and Letters and Reviews cost?
Good news: both Fiscal.ai and Letters and Reviews have free plans, so you can run them side by side and only pay if you hit a wall.
Does Fiscal.ai or Letters and Reviews have an API?
Fiscal.ai has an API for programmatic access and custom integrations. Letters and Reviews doesn't, so you're working through its interface.
Should I choose Fiscal.ai or Letters and Reviews?
It depends on what you're after. Pick Fiscal.ai if screeners and stock comparison matter to you; go with Letters and Reviews if you prefer its overall approach. And if you only need the basics both share, let price decide.
What asset classes do Fiscal.ai and Letters and Reviews cover?
Both cover stocks and ETFs. Fiscal.ai also handles mutual funds and funds.
Does Fiscal.ai or Letters and Reviews have real-time data?
Fiscal.ai offers real-time data, which matters if you trade actively. Letters and Reviews runs on delayed or end-of-day data, which is perfectly fine for longer-term investors who don't live and die by the tick.
Can I export data from Fiscal.ai and Letters and Reviews?
Fiscal.ai exports to CSV. Letters and Reviews is stingier about getting data out.
Which has a better stock screener: Fiscal.ai or Letters and Reviews?
Fiscal.ai has a stock screener for surfacing ideas; Letters and Reviews doesn't, and focuses its energy elsewhere.
Can I track my portfolio with Fiscal.ai or Letters and Reviews?
Fiscal.ai handles portfolio tracking. Letters and Reviews is really a research tool; you'd track your portfolio elsewhere.
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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.