Explore 7 articles from Duolingo on mobile performance

How we used Macros to Promote MVVM architecture adoption

Over the past few years, our team of iOS engineers has grown significantly (and continues to grow!), as has the size of the codebase.

How We Slashed Android Startup Time by 30% with Baseline Profiles

Nobody likes waiting, especially when opening an app. We noticed a clear trend: the faster our app started, the more users stuck around.

How we reduced manual regression tests by 70% using AI tools

AI tools offer a solution to difficult-to-automate regression testing woes.

How we sped up Android and iOS builds by 68% on CI

We made our engineers happier by cutting build times down from 50 minutes to 16.

How server-driven UI keeps our shop fresh

A single backend response can do a lot more than you think.

How dogfooding helps us build a better Duolingo

“Dogfooding” is one of the most important tools we have for improving the app.

Android App Excellence: Duolingo

Showcases Duolingo’s approach to building an excellent Android app, focusing on performance and user engagement.