Tool Comparison
InsideArbitrage vs Unusual Whales
- Paid from
- $100/mo
- Free plan
- Yes
- Platforms
- Web
Best if
- You want corporate actions & special situations, dividends, and splits.
- You're newer to investing and want something approachable
- Paid from
- $42/mo
- Free plan
- Yes
- Platforms
- Web, Mobile, API
Best if
- You want the cheaper way in: plans start at $42/mo instead of $100/mo
- Delayed quotes won't cut it; you need real-time data
- You do a lot of your research from your phone
Pick InsideArbitrage if
InsideArbitrage
Free • From $1200/yr · Web
- You want corporate actions & special situations, dividends, and splits.
- You're newer to investing and want something approachable
Pick Unusual Whales if
Unusual Whales
Free • From $504/yr · Web · Mobile · API
- You want the cheaper way in: plans start at $42/mo instead of $100/mo
- Delayed quotes won't cut it; you need real-time data
- 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 Unusual Whales cover a lot of the same ground (5 shared categories, including news, alerts, and calendar), so for the basics you won't go far wrong with either. InsideArbitrage simply does more: 17 categories to Unusual Whales's 12, including corporate actions & special situations, dividends, and splits. Unusual Whales counters by starting cheaper at $42/mo.
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InsideArbitrage
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Key differences at a glance
- Cheaper paid plan
- Unusual Whales$42/mo vs $100/mo
- Free trial
- Unusual Whales7 days
- Broader coverage
- InsideArbitrage17 vs 12 categories
- Mobile app
- Unusual Whales
- API access
- Unusual Whales
- Real-time data
- Unusual Whales
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 Unusual Whales does best
- Tracking US options flow with trade details, exchange data, filters, configurable columns, sorting, and saved trades.
- Multi-leg tagging in the flow feed and open trades in an options profit calculator for payoff and P/L context.
- Monitor dark pool and off-exchange activity, with market-tide, lit/off-lit, and related flow feeds available where the plan supports them.
- Tools for building alerts across the website, mobile apps, and Discord; free alerts are delayed and limited, while premium alerts are faster and broader.
- Stock and options screeners for unusual volume, options activity, premium, volume, open interest, implied volatility, greeks, and related filters.
Side by side
Pricing comparison
See for yourself
Side by side
Price, platforms, data, and market coverage.ShowHide
Side by side
| Attribute | ||
|---|---|---|
| Pricing & plans | ||
Starting price | Free • From $1200/yr | Free • From $504/yr |
Free tier | Yes | Yes |
Free trial | — | 7 days |
Plan limits | — | 13 limits: Free Limited: options flow delay: 2 trading days, Free Limited: news delay minutes: 15 +11 more |
| Platforms & access | ||
Web app | Yes | Yes |
Mobile app | No | Yes |
API access | No | Yes |
Broker sync | No | — |
Integrations | — | Discord, X (Twitter) +3 more |
| Audience & fit | ||
Experience level | Beginner, Intermediate, Advanced | Intermediate, Advanced |
Best for | — | Retail Traders, Pro Retail +3 more |
Categories covered | 17 | 12 |
Regions | — | North America |
| Data & capabilities | ||
Data quality | — | 3 signals: Latency: Streaming and Real-time, Granularity: Minute and EOD +1 more |
Capabilities | Universe builder | 3 signals: Universe builder, Multi-leg options +1 more |
| Try it | Visit InsideArbitrage | Visit Unusual Whales |
Standout features
The best features of InsideArbitrage and Unusual Whales.ShowHide
Standout features
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 Unusual Whales does best
- Tracking US options flow with trade details, exchange data, filters, configurable columns, sorting, and saved trades.
- Multi-leg tagging in the flow feed and open trades in an options profit calculator for payoff and P/L context.
- Monitor dark pool and off-exchange activity, with market-tide, lit/off-lit, and related flow feeds available where the plan supports them.
- Tools for building alerts across the website, mobile apps, and Discord; free alerts are delayed and limited, while premium alerts are faster and broader.
- Stock and options screeners for unusual volume, options activity, premium, volume, open interest, implied volatility, greeks, and related filters.
All details
Every attribute we track for InsideArbitrage and Unusual Whales.ShowHide
All details
| Attribute | ||
|---|---|---|
| Coverage & fit | ||
Asset types | StocksETFs | OptionsStocksETFsCryptos |
Experience | BeginnerIntermediateAdvanced | IntermediateAdvanced |
Target audience | Not specified | Retail TradersPro RetailDay TradersSwing TradersAlgo Traders |
Regions | Not specified | North America |
Coverage details | Identifiers: Ticker and CIK | Countries: USIdentifiers: Ticker |
| Data | ||
Data freshness | Not specified | StreamingReal-time |
Data granularity | Not specified | MinuteEOD |
| Access & integrations | ||
API protocols | Not specified | RESTWebSocket |
API auth & delivery | Not specified | Auth: APIKeyDocs |
Integrations | Not specified | DiscordX (Twitter)MCP ServerOpenAPIAI Skills |
| Plans & trust | ||
Capability signals | Universe builder | Universe builderMulti-leg optionsGreeks |
Vendor & support | InsideArbitrageSupport: Email | Unusual Whales IncSupport: Email |
Curation ratings | Methodology 3/5Reliability 3/5UX 4/5 | Not specified |
Green tags are exclusive to that tool in this comparison.
Pricing
Plans, billing, free trials, and monthly prices.ShowHide
Pricing
| Tier | ||
|---|---|---|
| Free plan | Free“Public Articles and Data” | Free“Free Limited”options flow delay: 2 trading days · news delay minutes: 15 · +1 more |
| Entry paid plan | $1200/yr≈ $100/mo“Premium - Annual” | $504/yr≈ $42/mo“Retail Basic (Annual)”custom alerts: 25 · watchlists: 5 · +1 more |
| Tier 2 | $150/mo“Premium - Monthly” | $50/mo“Retail Basic (Monthly)”custom alerts: 25 · watchlists: 5 · +1 more |
| Tier 3 | — | $756/yr≈ $63/mo“Retail Pro Annual” |
| Tier 4 | — | $75/mo“Retail Pro Monthly” |
| Tier 5 | — | $1224/yr≈ $102/mo“Retail Max Annual” |
| Tier 6 | — | $120/mo“Retail Max Monthly” |
| Tier 7 | — | $150/mo“API Access”requests per day: 40,000 · historical lookback years: 2 |
| Top plan | — | $375/mo“API Advanced (WebSocket streaming)” |
| Custom / enterprise | Contact sales“IA Professional” | — |
| Free trial | — | 7 days |
Questions we keep getting
What's the difference between InsideArbitrage and Unusual Whales?
InsideArbitrage leans toward news, alerts, and calendar, while Unusual Whales puts more weight on options, money flow, and screeners. They overlap in 5 categories, so for most people it comes down to workflow preference and price.
How much do InsideArbitrage and Unusual Whales cost?
Good news: both InsideArbitrage and Unusual Whales have free plans, so you can run them side by side and only pay if you hit a wall.
Which is better for beginners: InsideArbitrage or Unusual Whales?
InsideArbitrage is the friendlier place to start; its interface takes less getting used to. Both work fine once you're past the basics.
Can I use InsideArbitrage or Unusual Whales on my phone?
Unusual Whales lists a dedicated mobile app, so it travels better. InsideArbitrage doesn't list a dedicated mobile app; its documented access is web.
Does InsideArbitrage or Unusual Whales have an API?
Unusual Whales has an API for programmatic access and custom integrations. InsideArbitrage doesn't, so you're working through its interface.
Should I choose InsideArbitrage or Unusual Whales?
It depends on what you're after. Pick InsideArbitrage if corporate actions & special situations and dividends matter to you; go with Unusual Whales if you'd rather have options and money flow. And if you only need the basics both share, let price decide.
What asset classes do InsideArbitrage and Unusual Whales cover?
Both cover stocks and ETFs. Unusual Whales adds options and cryptos on top.
Does InsideArbitrage or Unusual Whales have real-time data?
Unusual Whales offers real-time data, which matters if you trade actively. InsideArbitrage 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.
Is InsideArbitrage or Unusual Whales better for day trading?
Unusual Whales is the one positioned more for active traders. InsideArbitrage is the better fit if you care less about fast trading workflows and more about a calmer research process.
Which has a better stock screener: InsideArbitrage or Unusual Whales?
Both InsideArbitrage and Unusual Whales 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 Unusual Whales?
InsideArbitrage handles portfolio tracking. Unusual Whales is really a research tool; you'd track your portfolio elsewhere.
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