★ BEST INVESTING TOOLS COMPARISON ★
VOL. XCIV, NO. 247
Source check: Stock Unlock checked June 19, 2026
Tool Comparison
InsideArbitrage vs Stock Unlock
Pick InsideArbitrage if
InsideArbitrage
From $100/mo · Web
- Delayed quotes won't cut it; you need real-time data
- You care about news, calendar, and corporate actions & special situations, things Stock Unlock doesn't offer
Pick Stock Unlock if
Stock Unlock
Free • From $90/yr · Web · Mobile
- You'd rather start free and only pay if you outgrow it
- You want the cheaper way in: plans start at $7.5/mo instead of $100/mo
- You do a lot of your research from your phone
Skip both if: Neither one clicks with how you research; there are strong third options.
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Our take
The bottom line
InsideArbitrage and Stock Unlock cover a lot of the same ground (10 shared categories, including alerts, dividends, and insider data), so for the basics you won't go far wrong with either. The real difference is focus: only InsideArbitrage gives you news and calendar, and only Stock Unlock gives you stock comparison and ETF analysis.
What readers say
InsideArbitrage
Vote once to reveal the community verdict.
Stock Unlock
Vote once to reveal the community verdict.
Key differences at a glance
- Free plan
- Stock Unlock
- Cheaper paid plan
- Stock Unlock$7.5/mo vs $100/mo
- Mobile app
- Stock Unlock
- Real-time data
- InsideArbitrage
- Broker sync
- Stock Unlock
- Global coverage
- Stock Unlock
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 | From $100/mo | Free • From $90/yr |
Free tier | No | Yes |
Free trial | — | — |
Plan limits | — | 14 limits: Free: manual portfolios: 2, Free: screener searches per week: 3 +12 more |
| Platforms & access | ||
Web app | Yes | Yes |
Mobile app | No | Yes |
API access | No | No |
Broker sync | No | Yes |
Integrations | — | SnapTrade |
| Audience & fit | ||
Experience level | Beginner, Intermediate, Advanced | Beginner, Intermediate, Advanced |
Best for | — | — |
Categories covered | 18 | 17 |
Regions | North America | North America, Europe, APAC, LatAm, Middle East, Africa |
| Data & capabilities | ||
Data quality | 4 signals: Latency: Real-time and End of Day, Granularity: EOD +2 more | 3 signals: Latency: End of Day, Granularity: EOD +1 more |
Capabilities | Universe builder | Broker sync |
| Try it | Visit InsideArbitrage | Visit Stock Unlock |
Where each one shines
What InsideArbitrage and Stock Unlock each do best.ShowHide
Where each one shines
What InsideArbitrage and Stock Unlock each do best.What InsideArbitrage does best
- Tracking announced merger-arbitrage deals with spread context, calendars, deal updates, Deals in the Works, and post-mortem research.
- Tracked-deal workflows to filter relevant news, SEC filings, and tweets around the active-deal symbols a premium user follows.
- Research coverage for insider activity with Insider Weekends, cluster buys, buys near highs, flip-floppers, top-performing insiders, sector heat maps, and premium insider screens.
- Monitoring buyback situations through daily buyback announcements, searchable buyback history, Buyback Wednesdays, and Double Dipper screens that combine insider buying with repurchases.
- Monitoring spinoffs, completed spinoffs, Spinsider ideas, CVR deals, CVR outcomes, tender offers, reverse splits, activist campaigns, C-suite transitions, and M&A news feeds.
What Stock Unlock does best
- Research coverage for more than 170,000 stocks and ETFs across 70+ global exchanges, with premium plans extending historical financial depth.
- Stock Scores rated from 1 to 5 across valuation, profitability, financial health, growth, dividends, management, and analyst sentiment.
- Screening for stocks with 85+ metrics across scores, valuation, dividends, growth, financial health, and other fundamentals.
- Research coverage for ETFs through the ETF Screener, which the product navigation and homepage describe as covering 50,000+ global ETFs.
- Tools for running built-in DCF models that auto-populate financial data while letting users adjust projection periods, growth assumptions, terminal multiples, required return, and dividend growth.
Every detail we compared
Every tracked attribute for InsideArbitrage and Stock Unlock, side by side.ShowHide
Every detail we compared
Every tracked attribute for InsideArbitrage and Stock Unlock, side by side.| Attribute | ||
|---|---|---|
| Coverage & fit | ||
Asset types | StocksETFs | StocksETFs |
Experience | BeginnerIntermediateAdvanced | BeginnerIntermediateAdvanced |
Regions | North America | North AmericaEuropeAPACLatAmMiddle EastAfrica |
Coverage details | Countries: USExchanges: XNYS, XNAS, and ARCXIdentifiers: Ticker and CIK | Identifiers: Ticker |
| Data | ||
Data freshness | Real-timeEnd of Day | End of Day |
Data granularity | EOD | EOD |
| Access & integrations | ||
Import methods | Manual | BrokerOAuthCSVManual |
Integrations | Not specified | SnapTrade |
| Plans & trust | ||
Capability signals | Universe builder | Broker sync |
Vendor & support | InsideArbitrageCountry: USSupport: Email | Stock Unlock Inc.Support: Email and Chat |
Curation ratings | Methodology 3/5Reliability 3/5UX 4/5 | Methodology 3/5Reliability 4/5UX 4/5 |
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 | — | Freemanual portfolios: 2 · screener searches per week: 3 · +1 more |
| Entry paid plan | $100/mo“Premium – Annual” | $90/yr≈ $7.50/mo“Pro”annual billing monthly equivalent usd: 7.5 · financial history years: 10 · +4 more |
| Tier 2 | $150/mo“Premium – Monthly” | $240/yr≈ $20/mo“Unlimited”annual billing monthly equivalent usd: 20 · financial history years: 35 · +3 more |
| Tier 3 | $300/mo“IA Professional – Annual” | — |
| Top plan | $400/mo“IA Professional (4 seats)” | — |
Questions we keep getting
What's the difference between InsideArbitrage and Stock Unlock?
InsideArbitrage leans toward news, alerts, and calendar, while Stock Unlock puts more weight on screeners, data visualizations, and stock comparison. They overlap in 10 categories, so for most people it comes down to workflow preference and price.
Is InsideArbitrage or Stock Unlock free to use?
Stock Unlock has a free tier, so you can get started without paying anything. InsideArbitrage is paid-only. If budget matters, start with Stock Unlock and see how far it takes you before opening your wallet.
Can I use InsideArbitrage or Stock Unlock on my phone?
Stock Unlock lists a dedicated mobile app, so it travels better. InsideArbitrage doesn't list a dedicated mobile app; its documented access is web.
Should I choose InsideArbitrage or Stock Unlock?
It depends on what you're after. Pick InsideArbitrage if news and calendar matter to you; go with Stock Unlock if you'd rather have stock comparison and ETF analysis. And if you only need the basics both share, let price decide.
Does InsideArbitrage or Stock Unlock have real-time data?
InsideArbitrage offers real-time data, which matters if you trade actively. Stock Unlock 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.
Which covers international markets: InsideArbitrage or Stock Unlock?
Stock Unlock has documented international coverage (North America, Europe, APAC, LatAm, and more), so it's the safer bet if you hold non-US stocks. InsideArbitrage is more region-specific, mainly North America.
Can InsideArbitrage or Stock Unlock connect to my broker?
Stock Unlock syncs with brokers automatically. With InsideArbitrage, you're entering holdings by hand or importing files.
Which has a better stock screener: InsideArbitrage or Stock Unlock?
Both InsideArbitrage and Stock Unlock 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 InsideArbitrage or Stock Unlock?
Yes, both do portfolio tracking: holdings, performance, and allocation in one place.
Keep researching
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Feedback
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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.