Merchant Library Specs

We built the Button open-source library with the key questions we hear from our partners in mind. In particular:

It's completely open-source
No third party dependencies
- Note: Android uses Support Library and Google Play services
100% functional test coverage
Strict semantically versioned releases
MIT Licensed

Key Performance Characteristics

Note: These metrics are automatically updated by our release process -- they always reflect the latest version

Android Merchant Library

Compiled Size: 33 kb (AAR)
Method Count: 221 methods
Running Memory Footprint
- Constant: ~200 kb
- Peak: ~1 mb
- Java heap size measured on Google Pixel running Android 8.1.0 using Memory Profiler
Network Footprint
- New Install: 1.64 kb
- Button Order Tracking: 1.68 kb
- All others: 0 bytes
Library start time: ~6 ms
- Measured as time to return from configure method
Supported OS Versions: API 15+

iOS Merchant Library

Compiled Size: 90 kb
- Measured by uploading two complete builds to TestFlight and comparing their download size
Running Memory Footprint
- Constant: ~2 kb
- Peak: ~2.75 kb
Network Footprint
- New Install: ~775 bytes
- Button Order Tracking: ~750 bytes
- All others: 0 bytes
Library start time: ~1 ms
- Measured as time to return from configure method
Supported OS Versions: iOS 9+
100% Swift Code

Support Guarantee

There are no known crashing issues in the library
- A crashing issue in this library is P0 to our team and will be addressed immediately
All new versions of the Android and iOS will be supported at least 30 days before public availability of the OS version

Sample Project

Want to see what a complete setup looks like? Both the iOS and Android Merchant library repositories include a full Sample Project.