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John Hammond

Building Install Attribution for Indie App Developers

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Hi everyone 👋

I'm building Attribr, an install attribution SDK for iOS and Android apps.

Most indie developers ship an app, watch the install count tick up, and have no idea where those users actually came from. Was it the Reddit post? The TikTok? That ProductHunt launch? Nobody knows.

Attribr tells you.

Drop in 3 lines of Swift or Kotlin and every install gets tagged with its source — whether that's a deep link, a UTM campaign, a referral from another user, or pure organic.

The goal is simple:

  • know exactly which channel brought each install

  • see day-1, day-7, and day-30 retention in one place

  • track revenue against the installs that drove it

  • get all of it without paying high prices

Most attribution tools are built for growth teams at Series B companies. They're priced that way too. I wanted something an indie dev could drop into their app on a Tuesday afternoon and have real data by Tuesday evening.

3 lines of code. No third-party dependencies. First install shows up in the dashboard within seconds of the first launch.

👉 attribr.dev

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John Hammond

Attribr by MRVL is the install attribution SDK we built for our own apps. 3 lines of Swift. That's all it takes to know exactly where your iOS users are coming from, track 30-day retention, and see every install land in real time.

No dashboards to stitch together. No third-party data sharing. Just clean, first-party attribution that takes minutes to integrate.

See it in action 🔗 https://www.tiktok.com/tiktokstudio/comment/7641723043106131222

If you're shipping iOS apps and tired of flying blind on installs — this was built for you.