On-device models
Run models like Gemma & Qwen fully on your phone — offline and free.
A private AI app for Android
Every model.
Made yours.
Talk to any model — in the cloud with your OpenRouter key, or fully on-device. Add web search and multi-step Deep Research when you need them. Everything stays on your phone — no account, nothing on a server.
- BYO API key
- ∞ models
- On-device too
- 0 tracking
Material 3 Expressive
Shapely, springy, alive.
EchoFlow is built head-to-toe on Google's Material 3 Expressive. Scalloped shapes, bold type and physics-based spring motion give every tap, swipe and transition a playful bounce — it doesn't just work, it delights.
- Real Material Shapes — the scalloped seals throughout
- Spring physics on every tap and transition
- Bold expressive type & soft, generous surfaces
Deep Research
Research that runs itself.
Ask a real question and EchoFlow investigates the web across multiple steps, then writes a cited report. It runs in the background — lock your phone and come back to the answer.
- Powered by Exa, Parallel, Firecrawl — or your own model
- Runs in the background with a progress notification
- Cited, structured reports you can trust
On-device models
Run AI on your phone. Even offline.
Download a model once and chat with no internet, no cost, and no data leaving your device. Perfect for travel, flaky signal, or simply keeping everything private.
- Gemma, Qwen, DeepSeek & more, fully on-device
- Works offline — no key, no account
- Download curated picks or import your own
Stored on your device
Your whole history, on your phone.
Every conversation is saved locally on your device — so your full chat history is there the instant you open the app, works with no internet at all, and never sits on someone else's server.
- All chats stored locally on your device
- Open past conversations offline, anytime
- Never uploaded, never kept on a server
Powered by OpenRouter One key.
One key.
Every model
worth using.
EchoFlow doesn't lock you to one provider. Paste your OpenRouter key once, then add any model by its ID — frontier or free, reasoning or fast. Switch between them mid-conversation from a single tap.
Your key, stored on-device
sk-or-v1-••••••••••••••••••••••••••••• - Add custom models by ID + display name
- Search & swap models from a bottom sheet
- Free models work out of the box
Make it yours Seven palettes. Light & dark.
Seven palettes. Light & dark.
Material You.
Each theme recolors the entire app, in light and dark. On Android 12+, Wallpaper pulls your palette straight from your home screen.
Wallpaper Mono Ocean Forest Sunset Lavender Rose
The whole toolkit
Small app. Serious craft.
Web search
Give any model live answers via Exa, Parallel, Firecrawl or OpenRouter.
Deep Research
Multi-step web research that runs in the background and returns a cited report.
Data Agent
Pull structured data off the web into clean tables with Firecrawl's agent.
Real-time streaming
Replies land word by word with a live caret — never a loading spinner.
Reasoning traces
Watch the model think in a collapsible panel as the answer streams in.
Rich markdown
Code blocks, tables, lists and emphasis render cleanly in every reply.
Switch models mid-chat
Jump between any of your models in a single tap without losing the thread.
Private by default
Your key and chats stay on your device. No account, no telemetry, no tracking.
Start
the flow.
Bring your OpenRouter key, pick your models, choose your color — and start talking to an AI that finally feels like yours.
Free · OpenRouter · No account required