Zofi vs Off Grid
Both are free, open-source, offline AI apps for Android. The difference is focus: Zofi is built for mid-range phones and persistent memory across conversations — Off Grid targets flagship performance and adds built-in tool calling and NPU-accelerated image generation.
TL;DR
Choose Zofi if you have a mid-range phone, want the AI to remember you across conversations, or need interactive Artifacts. Choose Off Grid if you have a Snapdragon flagship, want the fastest image generation, or need built-in tool calling.
Feature comparison
| Feature | Zofi | Off Grid |
|---|---|---|
| Mid-range phone support | Yes (Snapdragon 778G / 4 GB+) | Best on flagship |
| Semantic memory | Knowledge graph (opt-in) | Not available |
| Image generation | CPU — ~37s on S24 Ultra | NPU — 5–10s on Snapdragon |
| Voice input (STT) | Whisper on-device | Whisper on-device |
| Tool calling | Search, calc, date, image gen | Search, calc, date, device info |
| Document RAG | On-device, encrypted | PDF + code files |
| HTML/JS Artifacts | Sandboxed WebView | Not available |
| In-app benchmark | pp/tg/load/RAM | Not available |
| Thinking mode | Qwen3, Gemma 4 | Supported |
| Open source | AGPL-3.0 | MIT |
| Platform | Android | Android + iOS + Mac |
| Price | Free | Free |
What sets Zofi apart
Any Android, not just flagship
Zofi is optimised for Snapdragon 778G and 4 GB RAM devices — phones that Off Grid runs poorly on. You don't need an S24 Ultra.
Persistent semantic memory
Zofi builds a private knowledge graph from your conversations. The AI remembers your name, preferences, and context across sessions without you repeating yourself.
Interactive Artifacts
Responses can include runnable HTML/JS apps, charts, and interactive tools — rendered in a sandboxed WebView. Off Grid outputs plain text.
Where Off Grid has the edge
- NPU image generation — 5–10 seconds per image on Snapdragon 8 Gen 1+, vs Zofi’s CPU path (~37s on S24 Ultra). If fast image gen is your priority, Off Grid wins on flagship hardware.
- Cross-platform — Off Grid also runs on iOS and Mac. Zofi is Android-only.
Which is right for you?
Choose Zofi if…
- You use a mid-range Android (not a flagship)
- You want the AI to remember you across sessions
- You want interactive HTML/JS Artifacts
- You want a structured benchmark of your device
Choose Off Grid if…
- You have a Snapdragon 8 Gen 1+ flagship and want fast image gen
- You use iOS or Mac as well as Android
Try Zofi — works on any Android
Free, open-source, offline. Memory, image generation, and voice — no flagship required.
Download on Google Play