Attribr

Attribr is an install attribution SDK designed specifically for indie app developers seeking to understand where their app downloads originate. It addresses the common challenge faced by developers who lack visibility into which marketing channels, social posts, or campaigns are driving installs, especially given the limitations of App Store attribution and the high opt-out rates for Apple's App Tracking Transparency (ATT) consent. Attribr offers attribution without requiring ATT, permissions, or complicated setup, aiming to minimize the risk of app rejection and provide actionable insights from the first day of launch.

The SDK integrates with both iOS and Android apps, and can be added via Swift Package in Xcode or as a Kotlin library in Gradle, with no third-party dependencies and a package size under 50 KB. Setup involves three lines of code—initialize, set consent, and track launch—allowing developers to start attributing installs quickly. Attribr works in TestFlight, does not require an AASA file or URL scheme, and uses a privacy-safe SHA-256 hash of the device identifier to ensure unique installs are counted without double-counting reinstalls. Its dashboard provides detailed attribution data, including deep linking, ad network postbacks, SKAN support, A/B experiments, cohort lifetime value modeling, and fraud detection. The tool also offers features such as retention cohorts, referral codes, webhooks, email alerts, and white-label reporting, depending on the selected plan.

Attribr is delivered as a cloud-based service with SDKs for iOS and Android. It is available in multiple pricing tiers: a Free plan for up to 10,000 installs per month across three apps, with no credit card required and no expiration; a Growth plan for £79 per month (or £758 per year) supporting additional features; a Pro plan for £249 per month (or £2,390 per year) with higher volume and advanced integrations; and a Business plan for £699 per month (or £6,710 per year) with expanded capacity and support. An Enterprise option is also available with custom terms. Plans can be upgraded or downgraded flexibly, and annual billing offers a discount. The Free tier is not a trial and can be used indefinitely within its limits.

By providing install attribution, deep linking, retention tracking, and fraud detection in a lightweight, privacy-conscious SDK, Attribr aims to help indie developers and app studios make informed marketing decisions without the complexity or cost of enterprise-focused mobile measurement platforms.