head to head · open source
PostHog vs countly-sdk-ios
PostHog has 39,835 GitHub stars, 3,394 forks, 5,637 open issues and last shipped yesterday. countly-sdk-ios has 627 stars, 240 forks, 2 open issues and last shipped 8 days ago. PostHog leads on adoption by 6,253% (39,835 vs 627 stars). PostHog is written in Python under a custom or non-standard licence; countly-sdk-ios is written in Objective-C under MIT. PostHog has attracted 9% as many forks as stars, countly-sdk-ios 38%. PostHog was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (analytics, product-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 | countly-sdk-ios | |
|---|---|---|
| GitHub stars | ★ 40K | ★ 627 |
| License | Custom / other | MIT |
| Written in | Python | Objective-C |
| Last push | 2026-09-17 | 2026-09-10 |
| Forks | ⑂ 3.4K | ⑂ 240 |
| 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 countly-sdk-ios if
- You want the countly-sdk-ios feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Objective-C
- You evaluated both and countly-sdk-ios 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 countly-sdk-ios
countly sdk ios is the open source Objective C client library that adds Countly analytics, crash reporting and push notifications to iOS, watchOS, tvOS and macOS applications, and it is intended for mobile and desktop developers whose data lands in a Countly Lite or Countly Enterprise server.
read the full countly-sdk-ios overview →
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Frequently asked questions
Is PostHog or countly-sdk-ios more popular?
PostHog has 39,835 GitHub stars and countly-sdk-ios has 627. PostHog has the larger community by that measure.
Are PostHog and countly-sdk-ios free?
Both are open source. PostHog has no licence declared in this registry, and countly-sdk-ios is licensed under MIT. Both are free to self-host.
What is the difference between PostHog and countly-sdk-ios?
PostHog is written in Python and countly-sdk-ios in Objective-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 countly-sdk-ios?
Choose PostHog if you want the larger community (39,835 stars) or its Custom / other licence terms. Choose countly-sdk-ios if its feature set, stack or MIT licence fits better. Both are self-hostable.