Countly

Analytics · Free · since 2013 · open source

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Countly is a open-source product analytics for mobile, web, and desktop with crash reporting. It handles mobile analytics, crash reports, push notifications, and surveys, and it's best suited for mobile app teams wanting open-source analytics. It has been around since 2013, giving it a 13-year head start in building out integrations and refining the product.

The core product is entirely free. Since it's open-source, you can self-host for free with no user limits. It works well for mid-size teams that need more structure than a basic tool but less overhead than enterprise platforms.

pros

Open source and transparent
Includes Mobile Analytics as a core feature, purpose-built for analytics workflows
Fully open-source — you can self-host, audit the code, and avoid vendor lock-in
The core product is free with no paywalled essentials

cons

May lack some advanced features
Self-hosting is free but requires server maintenance and DevOps knowledge
Fewer built-in features means you may need additional tools to cover gaps
Data accuracy depends on tracking setup — misconfigured events give misleading results

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