VOL. XCIV, NO. 247
★ BEST INVESTING TOOLS COMPARISON ★
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Sunday, January 4, 2026
Tool Comparison
Firefly III vs MarketInOut comparison
Compare pricing, supported platforms, categories, and standout capabilities to decide which tool fits your workflow.
Comparison highlights
- Tool score: the chart below shows community vote sentiment over the last 8 weeks. Use it as a signal, not a verdict.
- Overlap: both cover Portfolio, and APIs & SDKs.
- Coverage tilt: Firefly III has 2 categories you won't get in MarketInOut; MarketInOut has 5 unique categories.
- Pricing: Firefly III is Free; MarketInOut is Free, One-time.
Category leaders
- Screeners: MarketInOut is tagged for this workflow; Firefly III has no category votes yet.
- Portfolio: not enough category votes yet to call a leader.
- Watchlist: MarketInOut is tagged for this workflow; Firefly III has no category votes yet.
Vote sentiment comparison
Cumulative positive vote share. Loading fresh totals...
Side-by-side metrics
| Attribute | Firefly III | MarketInOut |
|---|---|---|
Asset types Supported asset classes and universes | Other | Stocks, ETFs, Currencies, Cryptos |
Experience levels Who each product is built for | Beginner, Intermediate, Advanced | Beginner, Intermediate, Advanced |
Platforms Where you can access the product | Web, API | Web |
Pricing High-level pricing models | Free | Free, One-time |
Tested Verified by hands-on testing inside Find My Moat | Not yet | Not yet |
Editor pick Featured inside curated shortlists | Standard listing | Standard listing |
Coverage overlap
MarketInOut strengths
Categories covered by MarketInOut but not Firefly III.
Frequently Asked Questions
Which workflows do Firefly III and MarketInOut both support?
Both platforms cover Portfolio, and APIs & SDKs workflows, so you can research those use cases in either tool before digging into the feature differences below.
Do Firefly III and MarketInOut require subscriptions?
Both Firefly III and MarketInOut keep freemium access with optional paid upgrades, so you can trial each platform before committing.
How can you access Firefly III and MarketInOut?
Both Firefly III and MarketInOut prioritize web or desktop access. Investors wanting a mobile-first workflow may need to rely on responsive web views.
What unique strengths set the two platforms apart?
Firefly III differentiates itself with Self-hosted open-source personal finance manager (AGPLv3 license)., Supports double-entry bookkeeping with budgets, categories, tags, and detailed reporting., and Comprehensive REST API (JSON) with OAuth2 and Personal Access Tokens, plus a full OpenAPI specification., whereas MarketInOut stands out for Multi-market stock screener covering 35+ exchanges, with both technical and fundamental criteria. Filters can be applied by exchange, sector, industry, index, or watchlist. Timeframes include hourly, daily, weekly, and monthly, with per-stock Excel exports., Intraday timeframes (5m/15m/30m/1h/4h) are available for IEX, Forex, and Crypto. Extended-hours trading is not supported., and Formula Screener allows custom queries with AND/OR/NOT logic, multi-timeframe conditions, historical/range screening, index and ticker references, and regime filters..
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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.