VOL. XCIV, NO. 247
BEST INVESTING TOOLS COMPARISON
Tool details checked August 23, 2026
Tool Comparison
InsideArbitrage vs Stock Unlock
Pick InsideArbitrage if
InsideArbitrage
Free • From $100/mo · Web
- You want news, calendar, and corporate actions & special situations.
Pick Stock Unlock if
Stock Unlock
Free • From $90/yr · Web · Mobile
- 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
- You want stock comparison, ETF analysis, and scores.
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
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. InsideArbitrage includes news and calendar, and Stock Unlock includes stock comparison and ETF analysis.
What readers say
InsideArbitrage
No votes yet. Cast the first one.
Stock Unlock
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Key differences at a glance
- Cheaper paid plan
- Stock Unlock$7.5/mo vs $100/mo
- Mobile app
- Stock Unlock
- Broker sync
- Stock Unlock
- 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 • From $100/mo | Free • From $90/yr |
Free tier | Yes | Yes |
Free trial | — | — |
Plan limits | — | 16 limits: Free: monthly price usd: 9, Free: manual portfolios: 2 +14 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 | 17 | 17 |
Regions | — | North America, Europe, APAC, LatAm, Middle East, Africa |
| Data & capabilities | ||
Data quality | — | 3 signals: Latency: End of Day, Granularity: EOD +1 more |
Capabilities | Universe builder | Universe builder and 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
- Track announced mergers, spreads, calendars, deal updates and potential deals.
- Filter news, SEC filings and social posts for premium tracked-deal symbols.
- Research insider activity through transaction pages, weekly articles, cluster-buy screens and insider rankings.
- Follow buybacks, spinoffs, CVRs, tender offers, reverse splits, activist campaigns and management changes.
- Use 13F, 13D, 13G and Form 4 data for institutional and insider ownership context.
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 | Not specified | North AmericaEuropeAPACLatAmMiddle EastAfrica |
Coverage details | Identifiers: Ticker and CIK | Identifiers: Ticker |
| Data | ||
Data freshness | Not specified | End of Day |
Data granularity | Not specified | EOD |
| Access & integrations | ||
Import methods | Not specified | BrokerOAuthCSVManual |
Integrations | Not specified | SnapTrade |
| Plans & trust | ||
Capability signals | Universe builder | Universe builderBroker sync |
Vendor & support | InsideArbitrageSupport: 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 | Free“Public Articles and Data” | Freemonthly price usd: 9 · manual portfolios: 2 · +2 more |
| Entry paid plan | $100/mo“Premium - Annual” | $90/yr≈ $7.50/mo“Pro”monthly price usd: 24 · annual billing monthly equivalent usd: 7.5 · +5 more |
| Top plan | $150/mo“Premium - Monthly” | $240/yr≈ $20/mo“Unlimited”annual billing monthly equivalent usd: 20 · financial history years: 35 · +3 more |
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.
How much do InsideArbitrage and Stock Unlock cost?
Good news: both InsideArbitrage and Stock Unlock have free plans, so you can run them side by side and only pay if you hit a wall.
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.
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.
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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.