HALIO AI vs Chatagi
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
HALIO AI
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HALIO is a private, offline-first AI assistant that lives on your iPhone. No cloud. No account. No subscription. No signal required. Every major AI app today sends your conversations to a server. HALIO doesn't. The model runs on your device, your prompts stay on your device, and your history never leaves your phone. Airplane mode, a spotty connection, or no connection at all β HALIO keeps working. WHY HALIO β’ 100% on-device β GPU-accelerated for fast, efficient inference on modern iPhones. β’ Truly private β your conversations are stored locally and never transmitted. β’ No sign-up β open the app and start chatting. β’ No subscription β one-time download, no hidden tiers, no server-side rate limits. β’ Offline by default β works on a plane, on the subway, in the woods, under a desk. WHAT YOU CAN DO β’ Ask questions, brainstorm ideas, draft writing, summarize notes. β’ Dictate messages with on-device speech recognition. β’ Attach photos from your library to ground a conversation. β’ Keep multiple conversations going in parallel. β’ Use it as a thinking partner without worrying who's reading. FROM BUILDERBIAS HALIO is built by BuilderBias β intentional, transparent, responsible AI by design. We believe your AI should work for you, not the other way around. That means running on hardware you own, with data you control, under terms you can read. Download HALIO. Go offline. Keep thinking.
Chatagi
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Own your thoughts. Own your AI. Chatagi is an on-device AI chat app designed for privacy, control, and local intelligence. Instead of sending every conversation to the cloud, Chatagi runs supported AI models directly on your device, giving you a more private space to think, write, explore ideas, and ask questions. Why Chatagi? Private by Design Chatagi is built around local AI. Your conversations stay on your device, and no account or login is required to start chatting. On-Device Intelligence Download a supported model, set it as your default, and chat directly from your device. After setup, Chatagi can run without relying on a constant internet connection. Fast Mode and Thinking Mode Use Fast Mode when you want quicker responses. Switch to Thinking Mode when you want the model to reason more deeply and show a more thoughtful response style. Choose Your Model Chatagi lets you choose the model size that fits your device: Nano: Optimized for efficiency and faster local use. Small: A balanced option for everyday private AI chat. Large: A more capable local model designed for higher-performance devices. A Note on Performance Local AI depends on your deviceβs hardware. Larger models may respond more slowly because they require more memory and processing power. If a model feels slow or the app becomes unresponsive, switch to a smaller model for a smoother experience. Your thoughts. Your device. Your AI. Note: AI responses are for informational purposes only and do not constitute professional, legal, medical, financial, or other expert advice.
Screenshots
Verdict
The clearest difference is device support: HALIO AI at 3 against Chatagi's 1. HALIO AI also leads on iOS requirement (15.1 vs 17.6). On price, ads and in-app purchases there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | HALIO AI | Chatagi |
|---|---|---|
| Price | Free | Free |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod β better | iPhone |
| Requires iOS | 15.1 β better | 17.6 |
| Further details β not scored | ||
| Size | 36 MB | 11 MB |
| Age rating | 17+ | 12+ |
| Developer | Bruce Elgin | Audienceagi LLC. |
In-app purchases
HALIO AI
No in-app purchases
Chatagi
No in-app purchases









