head to head · open source
PostHog vs firebase-ios-sdk
PostHog has 39,835 GitHub stars, 3,394 forks, 5,637 open issues and last shipped yesterday. firebase-ios-sdk has 6,659 stars, 1,786 forks, 444 open issues and last shipped yesterday. PostHog leads on adoption by 498% (39,835 vs 6,659 stars). PostHog is written in Python under a custom or non-standard licence; firebase-ios-sdk is written in C++ under Apache-2.0. PostHog has attracted 9% as many forks as stars, firebase-ios-sdk 27%. PostHog was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (analytics), so they are genuine substitutes rather than adjacent tools.
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
| PostHog | firebase-ios-sdk | |
|---|---|---|
| GitHub stars | ★ 40K | ★ 6.7K |
| License | Custom / other | Apache-2.0 |
| Written in | Python | C++ |
| Last push | 2026-09-17 | 2026-09-17 |
| Forks | ⑂ 3.4K | ⑂ 1.8K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick PostHog if
- You weight community size — 40K stars and counting
- You want the Custom / other license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick firebase-ios-sdk if
- You want the firebase-ios-sdk feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches C++
- You evaluated both and firebase-ios-sdk fits your workflow better
About PostHog
PostHog is an open source platform for building self driving products, combining product analytics, web analytics, session replay, feature flags, experiments, error tracking, logs, surveys, a data warehouse, data pipelines, AI observability, and workflows in a single system, aimed at product, engineering, and growth teams that want to own their product data rather than rent it.
read the full PostHog overview →
About firebase-ios-sdk
Firebase Apple Open Source Development is the open source repository that holds the source code for the Apple platform Firebase libraries, and it is intended for iOS and other Apple platform developers who build apps on the Firebase platform and want to read, build, or vendor that client code directly.
read the full firebase-ios-sdk overview →
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Frequently asked questions
Is PostHog or firebase-ios-sdk more popular?
PostHog has 39,835 GitHub stars and firebase-ios-sdk has 6,659. PostHog has the larger community by that measure.
Are PostHog and firebase-ios-sdk free?
Both are open source. PostHog has no licence declared in this registry, and firebase-ios-sdk is licensed under Apache-2.0. Both are free to self-host.
What is the difference between PostHog and firebase-ios-sdk?
PostHog is written in Python and firebase-ios-sdk in C++. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, PostHog or firebase-ios-sdk?
Choose PostHog if you want the larger community (39,835 stars) or its Custom / other licence terms. Choose firebase-ios-sdk if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.