VOL. XCIV, NO. 247
★ BEST INVESTING TOOLS COMPARISON ★
NO ADVICE
Sunday, May 31, 2026
Tool Comparison · Sunday, May 31, 2026
Firefly III vs MarketInOut
Firefly III vs MarketInOut: which investing tool fits your workflow? Compare pricing, features, platforms, and verdict in seconds.
Firefly III
firefly-iii.org
Best for webhooks, and other
- Pricing
- Free
- Platforms
- Web, API
MarketInOut
marketinout.com
Best for screeners, and backtesting
- Pricing
- Free • Paid plans available
- Platforms
- Web
Outbound links may include affiliate or sponsor codes.
Comparison snapshot
Who should choose which?
Choose
Firefly III if…
- You build with APIs or automate workflows
- You need self-hosted open-source personal finance manager (agplv3 license).
- You need supports double-entry bookkeeping with budgets, categories, tags, and detailed reporting.
- You need comprehensive rest api (json) with oauth2 and personal access tokens, plus a full openapi specification.
Choose
MarketInOut if…
- You need real-time data, not delayed quotes
- You need 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.
- You need intraday timeframes (5m/15m/30m/1h/4h) are available for iex, forex, and crypto. extended-hours trading is not supported.
- You need formula screener allows custom queries with and/or/not logic, multi-timeframe conditions, historical/range screening, index and ticker references, and regime filters.
Consider alternatives if…
- You want broader category coverage in one tool.
- Neither pricing tier fits your budget.
Side-by-side feature breakdown
| Attribute | Firefly III | MarketInOut |
|---|---|---|
Asset types | Other | StocksETFsCurrenciesCryptos |
Experience | BeginnerIntermediateAdvanced | BeginnerIntermediateAdvanced |
Regions | Not specified | North AmericaEuropeAPACMiddle East |
Data freshness | Not specified | Real-time15-min DelayedEnd of Day |
API access | REST | Not specified |
Export formats | CSV | Excel |
Seen enough? Open either tool and try it now.
Pricing breakdown
Tool
Firefly III
—
Starting price
Plans & pricing
Tool
MarketInOut
$95.41666666666667/mo
Starting price
Plans & pricing
Coverage overlap
Categories covered by MarketInOut only.
Community category leaders
Vote sentiment comparison
Loading sentiment chart...
Still deciding? Get hands-on with both — most plans offer a free tier or trial.
Frequently Asked Questions
What's the difference between Firefly III and MarketInOut?
Firefly III focuses on Portfolio, APIs & SDKs, and Webhooks while MarketInOut specializes in Screeners, Backtesting, and Watchlist. They overlap in 2 categories, so choose based on your preferred workflow and pricing.
How much do Firefly III and MarketInOut cost?
Good news—both Firefly III and MarketInOut offer free plans. You can try each platform without commitment and only pay when you need premium features.
Does Firefly III or MarketInOut have an API?
Firefly III provides API access for programmatic data retrieval and custom integrations. MarketInOut doesn't currently offer an API, so you'll need to use their web interface.
Should I choose Firefly III or MarketInOut?
Choose Firefly III if you need Self-hosted open-source personal finance manager (AGPLv3 license)., and Supports double-entry bookkeeping with budgets, categories, tags, and detailed reporting.. Go with MarketInOut if 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., and Intraday timeframes (5m/15m/30m/1h/4h) are available for IEX, Forex, and Crypto. Extended-hours trading is not supported. better fits how you invest.
What asset classes do Firefly III and MarketInOut cover?
Both cover common asset types. Firefly III also includes Other. MarketInOut adds coverage for Stocks, ETFs, Currencies, and Cryptos.
Does Firefly III or MarketInOut have real-time data?
MarketInOut offers real-time data feeds, which is essential for active traders. Firefly III uses delayed or end-of-day data, which works fine for longer-term investors who don't need up-to-the-second quotes.
Can I export data from Firefly III and MarketInOut?
Both platforms let you export data to spreadsheets (). This is useful for custom analysis or record-keeping.
Which has a better stock screener—Firefly III or MarketInOut?
MarketInOut includes a stock screener for finding investment ideas. Firefly III focuses on other analytical tools.
Can I track my portfolio with Firefly III or MarketInOut?
Both platforms include portfolio tracking, so you can monitor your holdings, performance, and allocation in one place.
Other tools you might like
These profiles share overlapping coverage with both sides of this matchup.
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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.