# Caty App — Chat with Any AI Model

> Chat with Any AI Model (iPhone/iPad app by OU Catyonic.)

- Source: https://appshunter.io/ios/app/caty-app/id6759576079 (this page in markdown: same URL + `.md`)
- Developer: [OU Catyonic](https://appshunter.io/developer/1863920797)
- Category: Productivity, Entertainment
- Price: Free with in-app purchases
- Age rating: 17+
- Requires: iOS 15.5 · 71 MB
- Languages: American English
- Released: 2026-05-18
- Data updated: 2026-07-29
- User reviews in markdown: https://appshunter.io/ios/app/caty-app/id6759576079/reviews.md

## What is Caty App?

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 €0.99 and start chatting instantly. Powered by Anthropic's Claude technology.

THREE UNIQUE THEMES
Choose your style — 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.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| 100 AI Messages | $0.99 | one-time |



## Version history (last 2 releases)

### 1.0.2 — 2026-07-24

Reasoning models improvements:

- Reasoning block now appears immediately when the model starts thinking
- Live counter in the header: Thinking... (12s) updates every second
- Accurate reasoning duration: Thought for N seconds reflects the actual thinking time
- Copy button added for reasoning content — top-right when collapsed, bottom-right when expanded
- Works for all reasoning models (DeepSeek, Qwen, and others)

General improvements:

- Unified copy button with consistent confirmation
- Better error diagnostics during response parsing

### 1.0 — 2026-05-18

No release notes.

## More apps by OU Catyonic

- [ve vpn](https://appshunter.io/ios/app/ve-vpn/id6758549360)
- [CatyFlash: Learn Estonian](https://appshunter.io/ios/app/catyflash-learn-estonian/id6771355940)

All apps by OU Catyonic: https://appshunter.io/developer/1863920797

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-29.*