Best Open Source Subscription Tracker (2026)

The best open-source subscription trackers in 2026 are Wallos (largest active community, Docker), Actual Budget (full PFM, self-hosted), and the Pi-of-Health Google Sheet (free, no install). Self-hosted means you own the uptime.

In short

Best open-source self-hosted pick: Wallos (active dev, Docker). Best minimal self-hosted: Frugal. If you don't want to self-host, the closest hosted-with-open-data pick is LemSubs (open export formats, no lock-in).

Last reviewed 2026-08-09. First published 2026-05-02.

The ranking

1. Wallos

Best open-source pick — active dev, Docker, multi-currency

Verdict: Wallos is the de-facto self-hosted choice in 2026. The repo is active, Docker setup is straightforward for anyone with Portainer or Unraid, and the feature set covers what 90% of users need.

Strengths: Free, GPL-3.0 licence; Active GitHub repo (8,334 stars, pushed July 2026); Multi-currency, categories, notifications.

Trade-offs: You run the server; No native mobile; Setup is non-trivial for non-technical users.

Best for: Self-hosters who want the most polished open-source subscription tracker available in 2026.

Skip if: You don't want to maintain a Docker container or you need a mobile app.

Pricing: Free (self-hosted) (verified 2026-04-28). Bank login: No. Free plan: Unlimited.

2. Frugal

Minimal open-source tracker — readable codebase

Verdict: Frugal is the right pick if you want a small open-source codebase you can read in an afternoon and fork. Less polished than Wallos, easier to modify.

Strengths: Tiny dependency footprint; Easy to fork; Free.

Trade-offs: Smaller feature set; Less active than Wallos.

Best for: Developers who want a minimal codebase they can fork and modify.

Skip if: You want a polished UI out of the box — Wallos is more complete.

Pricing: Free (self-hosted) (verified 2026-04-28). Bank login: No. Free plan: Unlimited.

3. Subscription Tracker (PoH)

Listed in awesome-selfhosted — minimal Flask app

Verdict: A small Flask app that does the job. Right pick only for Python developers who want to bolt on their own logic — most users will be happier with Wallos.

Strengths: Free; Python/Flask — easy to extend; Awesome-selfhosted listed.

Trade-offs: Bare-bones UI; Smaller community.

Best for: Python-fluent self-hosters who want a tracker they can extend in Flask.

Skip if: You don't speak Python or want a polished UI.

Pricing: Free (self-hosted) (verified 2026-04-28). Bank login: No. Free plan: Unlimited.

4. Spliit

Open-source expense splitter — adjacent, not a tracker

Verdict: Spliit shows up in self-hosted lists but it's an expense splitter primarily. Listed here for honesty — if you searched 'open source subscription tracker' you may find it; it's not the right answer for most.

Strengths: Free, open source; Hosted demo available; Active project.

Trade-offs: Not really a subscription tracker; Subs view is incidental.

Best for: Households that mostly need expense splitting and want a light open-source tracker as a side feature.

Skip if: You want a real subscription tracker — this is an expense splitter first.

Pricing: Free (self-hosted) (verified 2026-04-28). Bank login: No. Free plan: Unlimited.

5. LemSubs (hosted, open exports)

Best non-self-hosted pick with open data exports

Verdict: Honest framing: LemSubs is not open source. It's listed here because the most common reason people search for open source in this category is data portability + no lock-in, and LemSubs delivers both via open export formats with zero server maintenance.

Strengths: Open CSV/PDF/JSON exports — no lock-in; Hosted = nothing to maintain; Free tier.

Trade-offs: Source is not public; Not technically open source.

Best for: Users who want the open-source spirit (data portability, no lock-in) without running a server.

Skip if: You specifically need source-available code.

Pricing: Free (10 subs); Pro $7.99/mo (verified 2026-04-28). Bank login: No. Free plan: 10 subs.

Why open-source matters for subscription data specifically

Subscription data is unusually privacy-sensitive for an apparently mundane category — it's a comprehensive map of what services a household uses, when it pays for them, and (with bank-link tools) what every transaction looks like. Open-source tools answer the 'where does this data live and who else can see it' question with code rather than a privacy policy.

Wallos is the leader on GitHub activity for subscription-specific tools: 8,334 stars and a commit pushed on 19 July 2026 when we last checked (9 August 2026). It ships under GPL-3.0, not a permissive MIT-style licence — that matters if you plan to fork it into something you distribute. Spliit covers the bill-splitting subset under MIT (2,842 stars, last pushed December 2025, so treat it as slow-moving). Actual Budget is far bigger (28,043 stars, commits the same week we checked) but isn't a subscription-specific tool — it's a YNAB-style envelope budget with a subscription detection layer, so we mention it and rank it lower for this query.

The gap between 'self-host' and 'managed open-source' matters. Pikapods, Sandstorm, and a few others let users run open-source tools without maintaining the infrastructure themselves. That's the right answer for users who want the audit trail of open-source code without the SRE workload of self-hosting. Worth pairing with the tool selection.

All open-source picks are self-hosted (you run them). Hosted-but-data-portable apps are listed separately at the bottom.

Frequently asked questions

What changed since the last update

• 2026-08-09: Fact re-check against GitHub: corrected Wallos star count (8,334, not 12k+) and licence (GPL-3.0, not MIT-style). Added Spliit and Actual Budget activity dates.
• 2026-05-02: First publication. 5 open-source / open-data picks ranked.

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