Explore 6 articles from Duolingo on mobile performance

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 we safely removed 10,000 lines of code using Emerge Tools’ Reaper

We had a single developer when we first released our iOS app in October 2012. Over the past 12 years, our team of software engineers has grown tremendously

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.