ChatAI vs Caty App
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
ChatAI
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ChatAI lets you have intelligent conversations powered entirely by Local On-Device Intelligence โ running directly on your device. - Completely Private: Your conversations never leave your device. No servers, no tracking, no accounts required. - Chat History: All conversations are saved locally. Rename, organise, and revisit past chats anytime. - Fast & Offline: Works without an internet connection since everything runs on-device. - No Subscriptions: No hidden fees. Uses Local On-Device Intelligence built into your iPhone. Just open the app, start typing, and get helpful responses instantly.
Caty App
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Caty App is a multi-model AI chat application that puts you in control. Connect to leading AI providers using your own API keys, or try Caty AI instantly with no setup required. MULTIPLE AI MODELS Chat with Claude (Anthropic), GPT (OpenAI), Grok (xAI), and any OpenAI-compatible provider. Switch between models anytime from the dropdown menu. Add unlimited custom providers. COUNCIL MODE Ask multiple AI models the same question and compare their perspectives. Tag models with @mentions and watch them respond one by one, each seeing what others said before them. TRY CATY AI No API keys? No problem. Purchase 100 messages for just โฌ0.99 and start chatting instantly. Powered by Anthropic's Claude technology. THREE UNIQUE THEMES Choose your style โ Caty (classic), Loli (minimal), or Neko (technical). Each theme has full light and dark mode support. PRIVACY FIRST Your data stays on your device. API keys are never sent to our servers. Chat history is stored locally with optional iCloud sync between your Apple devices. KEY FEATURES - Voice input and text-to-speech - File and image attachments with AI analysis - Web search integration - Deep thinking mode with visible reasoning - Markdown rendering with code highlighting - Cross-device sync via iCloud - Custom system prompts per chat - Chat history with pinning Free to use with your own API keys. All updates included.
Screenshots
Verdict
The clearest difference is in-app purchases: ChatAI at none against Caty App's 1. Caty App's advantage is update cadence (every 2 months vs every 5 months) and device support (4 vs 2). On price and ads there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Caty App sells 1 one-off in-app purchase. ChatAI asks for nothing beyond the download.
ChatAI ships an update every 5 months, Caty App every 2 months. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.
| Parameter | ChatAI | Caty App |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 months | Every 2 months โ better |
| Ads | No | No |
| In-app purchases | No โ better | Yes |
| Devices | iPhone, iPad | iPhone, iPad, iPod, Mac โ better |
| Requires iOS | 26.0 | 15.5 โ better |
| Further details โ not scored | ||
| Size | 2 MB | 71 MB |
| Age rating | 4+ | 17+ |
| Developer | Saurabh Sharma | OU Catyonic |
In-app purchases
ChatAI
No in-app purchases
Caty App
- 100 AI Messages$0.99









