head to head · open source
Polar vs ExpenseOwl
Polar has 10,454 GitHub stars, 811 forks, 141 open issues and last shipped yesterday. ExpenseOwl has 1,527 stars, 155 forks, 58 open issues and last shipped 1.0 years ago. Polar leads on adoption by 585% (10,454 vs 1,527 stars). Polar is written in Python under Apache-2.0; ExpenseOwl is written in HTML under MIT. Polar has attracted 8% as many forks as stars, ExpenseOwl 10%. Polar was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| Polar | ExpenseOwl | |
|---|---|---|
| GitHub stars | ★ 10K | ★ 1.5K |
| License | Apache-2.0 | MIT |
| Written in | Python | HTML |
| Last push | 2026-11-02 | 2025-10-18 |
| Forks | ⑂ 811 | ⑂ 155 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Polar if
- You weight community size — 10K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick ExpenseOwl if
- You want the ExpenseOwl feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches HTML
- You evaluated both and ExpenseOwl fits your workflow better
About Polar
Website • Docs • API Reference Polar: A billing platform for the intelligence era Turn usage into revenue. Polar is the financial layer for a new generation of intelligent software, built for AI startups that need to charge for tokens, agents, and compute without building billing infrastructure from scratch. Ship any pricing model in an afternoon. Usage billing, subscriptions, seats, credits, trials, and discounts. Compose them however your product charges. Meter what matters. Bill tokens, API calls, agent runs, GPU seconds, and storage with precision down to the event. Checkouts that convert , realtime metrics…
read the full Polar overview →
About ExpenseOwl
ExpenseOwl Why Create This? • Features • Screenshots Installation • Usage • Contributing ExpenseOwl is an extremely simple self hosted expense tracking system with a modern monthly pie chart visualization and cashflow showcase. Why Create This? There are a ton of amazing projects for expense tracking across GitHub (Actual, Firefly III, etc.). They're all incredible! I just don't find them fast and simple . They offer too many features I never use (like accounts or complex budgeting). Don't get me wrong! They're amazing when complexity is needed, but I wanted something dead simple that gives…
read the full ExpenseOwl overview →
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Frequently asked questions
Is Polar or ExpenseOwl more popular?
Polar has 10,454 GitHub stars and ExpenseOwl has 1,527. Polar has the larger community by that measure.
Are Polar and ExpenseOwl free?
Both are open source. Polar is licensed under Apache-2.0 and ExpenseOwl under MIT. Neither carries a licence fee.
What is the difference between Polar and ExpenseOwl?
Polar is written in Python and ExpenseOwl in HTML. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Polar or ExpenseOwl?
Choose Polar if you want the larger community (10,454 stars) or its Apache-2.0 licence terms. Choose ExpenseOwl if its feature set, stack or MIT licence fits better. Both are self-hostable.