EchoFlow: Open-source, native Android AI chat app with local-only storage and BYOK model
By
Aditya Vardhan Sharma
Lacks bite. And filling. And a copy-editor at the bakery.
Summary
EchoFlow is an open-source, native Android AI chat app that prioritizes local storage and a genuine Android-native experience. It uses a BYOK (Bring Your Own Key) model powered through OpenRouter, stores all conversations locally on the device for offline access, and has no tracking or cloud-based history. The app emphasizes Material Expressive design to differentiate itself from the many AI chat apps that simply wrap web UIs in mobile shells.
Key quotes
· 4 pulledI built EchoFlow because I wanted AI chat on Android to feel like it truly belongs on your phone, not like a web app placed inside an Android shell.
Your conversations are stored locally on your device, so you can still open and read past chats even when you're offline.
No tracking, no cloud inbox for your history, just your chats on your device.
Most AI apps feel like the same web UI with different branding, and many mobile apps copy the same iOS-style patterns.
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