Discover 54 articles on App Size in mobile performance

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Bevan Christian from IDN Engineering tackles a problem every mobile team faces: beautiful Lottie animations that bloat your app size. His solution? On-Demand Resources that cut initial download size while keepi...

70% of users expect apps to launch in 3 seconds. 63% will abandon yours if it takes more than 5.

Your React Native bundle size is quietly killing your app's performance. Callstack breaks down the optimization techniques that actually move the needle.

Why are app sizes so big now?

Company: Posts on Reddit · Jan 12, 2023
Platform: iOS

Bank of America's app is 448 MB. McDonald's is 251 MB. When did ordering fries require half a gigabyte?

Rodrigo Pintos from Mercado Libre reveals how they're tackling a massive problem: keeping 120 million active users happy while their app keeps growing. Their solution? Put the app on a diet.

Swiggy App on Diet

Company: Swiggy · Nov 22, 2022
Platform: iOS / Android

Swiggy slashed their Android app size by 22.6% in just one day. Here's how they did it without the usual complexity.

Rodrigo Pintos from Mercado Libre reveals how they tackled a critical problem: keeping 120M active users from uninstalling their app due to storage constraints. Their solution? Putting their Android app on a di...

Zomato's Android app was 23MB to download and hogging up to 700MB of cache. Their platform team decided to put it on a diet while still shipping new features.

Uber built a web app that loads in 3 seconds on 2G networks. Here's how they made it smaller than a typical image file.

React Native just made a massive default change that could speed up your app launches and shrink your bundle size. Here's what the benchmarks show.

Google's Flutter team studied early adopters building games with Flutter and discovered something surprising: 62% of Flutter developers didn't even know they could use it for game development.

Tree Shaking React Native Apps

Company: Klarna · May 10, 2022
Platform: React Native

Klarna Engineering borrowed a web optimization technique and cut their React Native app startup time by 20%. Here's how tree shaking made the difference.

Spotify just open-sourced the tool that helped them slash their Android app size by 9%. Here's why app size matters more than you think.

Building App Clips with React Native

Company: Shopify · Nov 26, 2021
Platform: React Native / iOS

Sebastian Ekström from Shopify built something that shouldn't exist: a React Native App Clip under 10MB. The Shop app itself is 51MB, and React Native isn't exactly known for being lightweight.

Meta's Superpack compression tech achieves what traditional tools couldn't: keeping app size in check while developers ship code at massive scale daily.

Project Bonsai

Company: Grab · Aug 12, 2021
Platform: iOS / Android

Grab's Android app had 4 million lines of code and was bleeding users. Google's research showed every 6MB increase costs 1% of conversions.

Callstack explores how code splitting is transforming React Native apps into modular super apps. The technique that revolutionized web development is now reshaping mobile architecture.

Pinterest slashed their iOS app size by 30% (50MB) and immediately saw install rates climb. The culprit? A sneaky localization bug multiplying files across app extensions.

Callstack just brought Hermes to iOS, and the performance gains are real. After years of Android exclusivity, React Native's lightweight JavaScript engine finally runs on Apple platforms.

LinkedIn reduced their Android app size by 27.5MB through aggressive optimization. Here's how they did it without compromising features.

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