## Build the best experiences for your best users

Deliver excellent experiences with delightful, intelligent, and adaptive apps --- that are performant and safe.  
Your commitment to building excellent apps, like Max, directly translates to increased visibility and user engagement on Google Play. Learn how developers achieve remarkable success and widespread recognition by delivering superior, high-quality experiences.

## Explore the impressive metrics and inspiring stories of developers who built exceptional apps for their most valuable users

![](http://developer.android.com/static/images/quality/excellent/reddit-casestudy.png)  
Case study

### Reddit

Reddit **improved app startup speed by over 50%** using Baseline Profiles and R8.  
[Learn more](https://android-developers.googleblog.com/2024/12/reddit-improved-app-startup-speed-using-baseline-profiles-r8.html)  
![](http://developer.android.com/static/images/quality/excellent/soundcloud-casestudy.png)  
Case study

### SoundCloud

SoundCloud uses Jetpack Glance to build Liked Tracks widget in just 2 weeks.  
[Learn more](https://android-developers.googleblog.com/2025/02/soundcloud-uses-jetpack-glance-to-build-liked-tracks-widget-in-just-2-weeks.html)  
![](http://developer.android.com/static/images/quality/excellent/instagram-casestudy.png)  
Case study

### Instagram

Instagram's early adoption of Ultra HDR **transforms user experience in only 3 months**.  
[Learn more](https://android-developers.googleblog.com/2024/08/instagrams-early-adoption-of-ultra-hdr-transforms-user-experience.html)  
![](http://developer.android.com/static/images/quality/excellent/x-casestudy.png)  
Case study

### ![X logo](https://developer.android.com/static/images/quality/excellent/x-logo.svg)

X improved **login success rate by 2x** after adopting passkeys.  
[Learn more](https://android-developers.googleblog.com/2024/11/x-improved-login-success-rate-after-adopting-passkeys.html)

## See how we're making Android the best platform for developers to build excellent experiences

[![](http://developer.android.com/static/images/picto-icons/happy-developers.svg)](http://developer.android.com/quality/excellent/delightful)  

### [Delightful](http://developer.android.com/quality/excellent/delightful)

Build exciting experiences that keep users coming back  
[![](http://developer.android.com/static/images/picto-icons/machine-learning.svg)](http://developer.android.com/quality/excellent/intelligent)  

### [Intelligent](http://developer.android.com/quality/excellent/intelligent)

Build intelligent experiences on Android with AI  
[![](http://developer.android.com/static/images/picto-icons/ui-elements.svg)](http://developer.android.com/quality/excellent/adaptive)  

### [Adaptive](http://developer.android.com/quality/excellent/adaptive)

Connect with users seamlessly, on any device [![](http://developer.android.com/static/images/picto-icons/lightning.svg)](http://developer.android.com/quality/excellent/performant)  

### [Performant](http://developer.android.com/quality/excellent/performant)

Craft consistently exceptional user experiences  
[![](http://developer.android.com/static/images/picto-icons/security-2.svg)](http://developer.android.com/quality/excellent/safe)  

### [Safe](http://developer.android.com/quality/excellent/safe)

Prioritize user data security by leveraging advanced safety tools

## Get started with our guides

[![](http://developer.android.com/static/images/cluster-illustrations/developer-guidance.svg)](http://developer.android.com/guide)  

### [Developer guides](http://developer.android.com/guide)

Use our developer guides and reference to build your app design.  
[See the developer guides](http://developer.android.com/guide)  
[![](http://developer.android.com/static/images/cluster-illustrations/certificate.svg)](http://developer.android.com/docs/quality-guidelines/core-app-quality)  

### [Quality guides](http://developer.android.com/docs/quality-guidelines/core-app-quality)

Lay out your designs by following Android best practices.  
[See the quality guides](http://developer.android.com/docs/quality-guidelines/core-app-quality)