★ BEST INVESTING TOOLS COMPARISON ★
VOL. XCIV, NO. 247
Source check: Uncle Stock checked August 4, 2026
Tool Comparison
Insider Screener vs Uncle Stock
Pick Insider Screener instead if
Insider Screener
Free • Paid plans available · Web · API
- Delayed quotes won't cut it; you need real-time data
- You care about insider data, something Uncle Stock doesn't offer
Start here
Uncle Stock
Free • From $130/yr · Web · API
- You care about backtesting, data visualizations, and financials, things Insider Screener doesn't offer
- You're a long-term investor who cares more about fundamentals than headlines
Skip both if: Neither one clicks with how you research; there are strong third options.
See alternativesOutbound links may include affiliate or sponsor codes.
Our take
The bottom line
Insider Screener and Uncle Stock cover a lot of the same ground (5 shared categories, including screeners, watchlist, and alerts), so for the basics you won't go far wrong with either. Uncle Stock simply does more: 11 categories to Insider Screener's 6, including backtesting, data visualizations, and financials. Insider Screener counters by being completely free.
What readers say
Insider Screener
Vote once to reveal the community verdict.
Uncle Stock
Vote once to reveal the community verdict.
Key differences at a glance
- Real-time data
- Insider Screener
- Free trial
- Uncle Stock14 days
- Broader coverage
- Uncle Stock11 vs 6 categories
- Asset coverage
- Uncle StockAdds cryptos
- Free plan
- Both
See for yourself
How they stack up
The side-by-side table: pricing, platforms, data, and coverage at a glance.ShowHide
How they stack up
The side-by-side table: pricing, platforms, data, and coverage at a glance.| Attribute | ||
|---|---|---|
| Pricing & plans | ||
Starting price | Free • Paid plans available | Free • From $130/yr |
Free tier | Yes | Yes |
Free trial | — | 14 days |
Plan limits | — | 10 limits: Bronze (Monthly): history years: 25, Bronze (Monthly): us history years: 35 +8 more |
| Platforms & access | ||
Web app | Yes | Yes |
Mobile app | No | No |
API access | Yes | Yes |
Broker sync | No | No |
| Audience & fit | ||
Experience level | Beginner, Intermediate, Advanced | Beginner, Intermediate, Advanced |
Best for | — | Retail Traders, Pro Retail +2 more |
Categories covered | 6 | 11 |
Regions | North America, Europe, APAC | North America, Europe, APAC, LatAm, Middle East, Africa |
| Data & capabilities | ||
Data quality | Latency: Real-time | Granularity: EOD |
Data partners | — | Sharadar and Financial Modeling Prep |
Capabilities | Universe builder | Universe builder |
| Try it | Visit Insider Screener | Visit Uncle Stock |
Where each one shines
What Insider Screener and Uncle Stock each do best.ShowHide
Where each one shines
What Insider Screener and Uncle Stock each do best.What Insider Screener does best
- Tracking insider buying and selling across 16 markets, including the U.S., Canada, major European markets, India, and Australia.
- Screening for insider buys, sells, cluster activity, buying-the-dip behavior, executive transactions, and earnings-related trades.
- Standardized cross-market data to compare insider activity across jurisdictions that normally publish filings in different formats.
- Updates that appear within minutes of regulatory filings from regulators and exchanges.
- Support for saving searches, receive daily email reports, and create alerts on paid web tiers.
What Uncle Stock does best
- Screening for more than 100,000 global stocks across regions and market caps using more than 2,000 fundamental and valuation metrics.
- Guru-inspired models and screens based on investors such as Buffett, Graham, and Lynch, with plan-dependent advice, scores, and price-target metrics.
- Tools for building screens with metric conditions, Must/Should/Exclude clauses, and Silver-plus multi-criteria composite ranking.
- Backtest fundamental screens with yearly rebalancing on Silver, then quarterly and half-yearly rebalancing on Gold.
- Configuration for backtests with sector caps, rebalance strategies, early-sell or stop-loss rules, and multiple position-sizing methods.
Every detail we compared
Every tracked attribute for Insider Screener and Uncle Stock, side by side.ShowHide
Every detail we compared
Every tracked attribute for Insider Screener and Uncle Stock, side by side.| Attribute | ||
|---|---|---|
| Coverage & fit | ||
Asset types | Stocks | StocksCryptos |
Experience | BeginnerIntermediateAdvanced | BeginnerIntermediateAdvanced |
Target audience | Not specified | Retail TradersPro RetailLong-term InvestorsValue Investors |
Regions | North AmericaEuropeAPAC | North AmericaEuropeAPACLatAmMiddle EastAfrica |
Coverage details | 14 countriesIdentifiers: Ticker | Identifiers: Ticker |
| Data | ||
Data freshness | Real-time | Not specified |
Data granularity | Not specified | EOD |
Data partners | Not specified | SharadarFinancial Modeling Prep |
| Access & integrations | ||
API protocols | REST | REST |
API auth & delivery | Auth: APIKey | Auth: APIKeyDocs |
Import methods | Not specified | Manual |
Export formats | CSVExcel | CSV |
| Plans & trust | ||
Capability signals | Universe builder | Universe builder |
Vendor & support | insiderscreener.com Inc.Country: United StatesSupport: Email | Castlefish BVCountry: BelgiumSupport: Chat, Email, Phone, and Forum |
Curation ratings | Methodology 3/5Reliability 4/5UX 4/5 | Not specified |
Green tags are exclusive to that tool in this comparison.
What you'll actually pay
Plans, billing, trials, and per-month pricing for both tools.ShowHide
What you'll actually pay
Plans, billing, trials, and per-month pricing for both tools.| Tier | ||
|---|---|---|
| Free plan | Free“Free (browse/limited)” | Free |
| Entry paid plan | Subscription“Plus” | $130/yr≈ $10.83/mo“Bronze (Yearly)”history years: 25 · us history years: 35 |
| Tier 2 | Subscription“Pro” | $210/yr≈ $17.50/mo“Silver (Yearly)”backtest rebalance: Yearly |
| Tier 3 | Subscription“Premium” | $20/mo“Bronze (Monthly)”history years: 25 · us history years: 35 |
| Tier 4 | Subscription“API Starter (€25/mo)” | $350/yr≈ $29.17/mo“Gold (Yearly)”api calls per month: 300 · backtest rebalance: Quarterly/Half-yearly |
| Tier 5 | Subscription“API Pro (€85/mo)” | $35/mo“Silver (Monthly)”backtest rebalance: Yearly |
| Top plan | Subscription“API Research (€299/mo quarterly / €339 monthly)” | $60/mo“Gold (Monthly)”api calls per month: 300 · backtest rebalance: Quarterly/Half-yearly |
| Free trial | — | 14 days |
Questions we keep getting
What's the difference between Insider Screener and Uncle Stock?
Insider Screener leans toward screeners, watchlist, and alerts, while Uncle Stock puts more weight on screeners, backtesting, and data visualizations. They overlap in 5 categories, so for most people it comes down to workflow preference and price.
How much do Insider Screener and Uncle Stock cost?
Good news: both Insider Screener and Uncle Stock have free plans, so you can run them side by side and only pay if you hit a wall.
Do Insider Screener and Uncle Stock have APIs?
Yes, both offer API access, so developers and quants can pull data programmatically or wire up their own integrations.
Should I choose Insider Screener or Uncle Stock?
It depends on what you're after. Pick Insider Screener if insider data matter to you; go with Uncle Stock if you'd rather have backtesting and data visualizations. And if you only need the basics both share, let price decide.
What asset classes do Insider Screener and Uncle Stock cover?
Both cover stocks. Uncle Stock adds cryptos on top.
Does Insider Screener or Uncle Stock have real-time data?
Insider Screener offers real-time data, which matters if you trade actively. Uncle Stock 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 Insider Screener and Uncle Stock?
Yes, both export to spreadsheets (CSV), which is handy if you like running your own numbers.
Which has a better stock screener: Insider Screener or Uncle Stock?
Both Insider Screener and Uncle Stock include stock screeners, and they differ more in interface than raw power; try both and see which one clicks for you.
Can I track my portfolio with Insider Screener or Uncle Stock?
Uncle Stock handles portfolio tracking. Insider Screener is really a research tool; you'd track your portfolio elsewhere.
Keep researching
Browse the #1 tool in 90+ categoriesKeep Exploring
Feedback
Spot stale pricing, missing features, or a comparison that feels off? Send feedback on the verdict, table, alternatives, or recommendation.
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.