★ BEST INVESTING TOOLS COMPARISON ★
VOL. XCIV, NO. 247
Tool comparison edition
Tool Comparison
ChartMill vs InsideArbitrage
ChartMill
Best for stock ideas and stock comparison
Free • Paid plans available
InsideArbitrage
Best for corporate actions & special situations and regulatory filings monitoring
From $100/mo
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The verdict
The bottom line
ChartMill and InsideArbitrage cover a lot of the same ground (12 shared categories, including screeners, data visualizations, and watchlist), so for the basics you won't go far wrong with either. ChartMill simply does more: 24 categories to InsideArbitrage's 18, including stock ideas, stock comparison, and scores. InsideArbitrage counters by keeping things simpler.
Key differences at a glance
- Real-time data
- InsideArbitrage
- Free plan
- ChartMill
- Broader coverage
- ChartMill24 vs 18 categories
- Global coverage
- ChartMill
Choose
ChartMill if…
- You'd rather start free and only pay if you outgrow it
- You care about stock ideas, stock comparison, and scores, things InsideArbitrage doesn't offer
- You trade often and need tooling built for speed
Choose
InsideArbitrage if…
- Delayed quotes won't cut it; you need real-time data
- You care about corporate actions & special situations, regulatory filings monitoring, and portfolio, things ChartMill doesn't offer
Comparison snapshot
| Attribute | ||
|---|---|---|
| Pricing & plans | ||
Starting price | Free • Paid plans available | From $100/mo |
Free tier | Yes | No |
Free trial | — | — |
Plan limits | Free: financials history: 4 years/quarters (free users, example pages). | — |
| Platforms & access | ||
Web app | Yes | Yes |
Mobile app | No | No |
API access | No | No |
Broker sync | — | No |
| Audience & fit | ||
Experience level | Beginner, Intermediate, Advanced | Beginner, Intermediate, Advanced |
Best for | Retail Traders, Pro Retail +6 more | — |
Categories covered | 24 | 18 |
Regions | North America, Europe | North America |
| Data & capabilities | ||
Data quality | 3 signals: Latency: 15-min Delayed and End of Day, Granularity: EOD and Minute +1 more | 4 signals: Latency: Real-time and End of Day, Granularity: EOD +2 more |
Capabilities | Custom formulas and Universe builder | Universe builder |
| Try it | Visit ChartMill | Visit InsideArbitrage |
Standout features
What ChartMill does best
- Free advanced stock screener with technical + fundamental filters (dividend, valuation, growth, profitability, health), ChartMill ratings, custom expressions, saved screens, and customizable result views (tables/charts).
- Trading Ideas library of 289 ready-to-use screen configurations spanning technical breakout/pullback setups, CANSLIM, Minervini, GARP, O’Shaughnessy Tiny Titans, dividend, value and growth strategies; each can be run and adapted.
- Charting with multi-chart layouts, multiple timeframes (including intraday), and save/load chart configurations; supports watchlist-based charting.
- Full-screen chart mode adds custom indicators (including fundamentals), event markers (earnings/dividends/splits), drawings/annotations, alerts, and a built-in position sizing tool.
- Stock pages aggregate technical & fundamental ratings/reports with financial statements, analyst ratings/price targets, earnings estimates, ownership/short interest, and news; Analyzer pages combine technical ratings, setup quality and fundamental reports for growth, valuation, health, profitability and dividend.
What InsideArbitrage does best
- Merger Arbitrage Tool with announced‑deal lists, spread tracking, calendars and deal updates; ‘Deals in the Works’ and deal post‑mortems.
- Insider data hub with ‘Insider Weekends’, cluster buys, buys near highs, flip‑floppers, top‑performing insiders and sector heat‑map.
- Buyback suite: daily buyback announcements, searchable buyback history, ‘Buyback Wednesdays’, and ‘Double Dipper’ (insiders + buybacks).
- Spinoff suite: upcoming/completed spinoffs and ‘Spinsider’ screen; CVR deals database with outcomes.
- Gurus/Institutional holdings pages aggregating 13F/13D/13G and Form 4 into manager dashboards.
Data & access details
| Attribute | ||
|---|---|---|
| Coverage & fit | ||
Asset types | StocksETFs | StocksETFs |
Experience | BeginnerIntermediateAdvanced | BeginnerIntermediateAdvanced |
Target audience | Retail TradersPro RetailDay TradersSwing TradersLong-term InvestorsGrowth InvestorsValue InvestorsDividend Investors | Not specified |
Regions | North AmericaEurope | North America |
Coverage details | 17 countries9 exchangesIdentifiers: Ticker and ISIN | Countries: USExchanges: XNYS, XNAS, and ARCXIdentifiers: Ticker and CIK |
| Data | ||
Data freshness | 15-min DelayedEnd of Day | Real-timeEnd of Day |
Data granularity | EODMinute | EOD |
| Access & integrations | ||
Import methods | Not specified | Manual |
Export formats | CSV | Not specified |
| Plans & trust | ||
Capability signals | Custom formulasUniverse builder | Universe builder |
Vendor & support | ChartMill | InsideArbitrageCountry: USSupport: Email |
Curation ratings | Not specified | Methodology 3/5Reliability 3/5UX 4/5 |
Green tags are exclusive to that tool in this comparison.
Pricing breakdown
Free
Lower starting price
Plans & pricing
- financials history: 4 years/quarters (free users, example pages).
$100/mo
Starting price
Plans & pricing
Coverage overlap
Shared categories
12Where the two tools cover the same ground.
ChartMill strengths
12InsideArbitrage strengths
6What you only get with InsideArbitrage.
Community category leaders
Vote sentiment comparison
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Frequently Asked Questions
What's the difference between ChartMill and InsideArbitrage?
ChartMill leans toward screeners, stock ideas, and stock comparison, while InsideArbitrage puts more weight on news, alerts, and calendar. They overlap in 12 categories, so for most people it comes down to workflow preference and price.
Is ChartMill or InsideArbitrage free to use?
ChartMill has a free tier, so you can get started without paying anything. InsideArbitrage is paid-only. If budget matters, start with ChartMill and see how far it takes you before opening your wallet.
Should I choose ChartMill or InsideArbitrage?
It depends on what you're after. Pick ChartMill if stock ideas and stock comparison matter to you; go with InsideArbitrage if you'd rather have corporate actions & special situations and regulatory filings monitoring. And if you only need the basics both share, let price decide.
Does ChartMill or InsideArbitrage have real-time data?
InsideArbitrage offers real-time data, which matters if you trade actively. ChartMill 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: ChartMill or InsideArbitrage?
ChartMill has documented international coverage (North America and Europe), so it's the safer bet if you hold non-US stocks. InsideArbitrage is more region-specific, mainly North America.
Can I export data from ChartMill and InsideArbitrage?
ChartMill exports to CSV. InsideArbitrage is stingier about getting data out.
Is ChartMill or InsideArbitrage better for day trading?
ChartMill 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: ChartMill or InsideArbitrage?
Both ChartMill and InsideArbitrage 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 ChartMill or InsideArbitrage?
InsideArbitrage handles portfolio tracking. ChartMill 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.