# PhyOTA vs ChatX

The clearest difference is review sentiment: ChatX at 88% against PhyOTA's 0%. ChatX also leads on rating (4.6 vs 1.0) and ratings volume (481 vs 1). PhyOTA's advantage is in-app purchases (none vs 6). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. ChatX sells 6 one-off in-app purchases. PhyOTA asks for nothing beyond the download.

ChatX holds the better App Store score, 4.6 against 1.0. That said, the two scores are not equally well evidenced: ChatX has 481 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of PhyOTA's written reviews are positive against 88% of ChatX's.

PhyOTA ships an update every 6 weeks, ChatX fortnightly. Both last shipped on September 17, 2026.

## The numbers

| Metric | PhyOTA | ChatX |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/phyota/id1492851629/reviews) | **[4.6 (481 ratings)](https://appshunter.io/ios/app/chatx-ai-chat-client-top/id6446304087/reviews)** |
| Number of ratings | 1 | **481** |
| Positive reviews | 0.0% of reviews | **88.4% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Fortnightly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 3 MB | 28 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [奉加微电子](https://appshunter.io/developer/1472300997) | [6X Studio LLC](https://appshunter.io/developer/888749139) |

## What reviewers say

### PhyOTA

[App page](https://appshunter.io/ios/app/phyota/id1492851629)

This utility app facilitates over-the-air (OTA) upgrades for BLE chips. It supports various chip generations and features like Xip and encrypted OTA functionality, offering a simple integration demo.

**Highlights:** BLE chip OTA upgrades, Support for 1st gen 6202 chips, Support for 2nd gen 6212 chips, Long packet transmission, Xip support, Encrypted OTA functionality

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### ChatX

[App page](https://appshunter.io/ios/app/chatx-ai-chat-client-top/id6446304087)

This AI chat client leverages advanced language models to help you generate content and boost efficiency. It offers features like prompt collections, quick phrases, and image generation, all accessible through high-speed API servers. Manage your conversations and settings across multiple devices with ease.

**Highlights:** Multiple advanced AI models, High-speed API servers, Prompt collections, Image generation, iCloud multi-device sync, Quick phrases and shortcuts

**Features:** Family Sharing, Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro (Lifetime) | Free | one-time |
| Add Words Pack 1 | $0.99 | one-time |
| Add Words Pack 2 | $3.99 | one-time |
| Pro | $4.99 | one-time |
| Add Words Pack 3 | $7.99 | one-time |
| Add Words Pack 4 | $17.99 | one-time |

**What reviewers like**

- 👍 Great app, quality
- 👍 Useful and powerful client
- 👍 Excellent replacement for ChatGPT
- 👍 Nice features
- 👍 Very solid AI chat app with many features

**What reviewers complain about**

- 🐛 Text-to-Speech voices could use improvement
- 🐛 AI image generation needs an upgrade
- 🐛 UI size for chats can be unpredictable
- 🔒 Words limit is not nice
- 🐛 Difficulty identifying uncensored models

**Reported bugs**

- Inconsistent iCloud sync for chat settings
- Occasional crashes
- Compatibility issues with older devices
- Login screen freezes

**Requested features**

- Safari extension
- Keyboard extension
- Support for Azure OpenAI API
- Markdown support
- Local model import and loading


## Frequently asked questions

### Is PhyOTA free?

PhyOTA is free to download, with no in-app purchases.

### Is ChatX free?

ChatX is free to download, with in-app purchases available.

### Which has better reviews, PhyOTA or ChatX?

ChatX is rated higher. PhyOTA averages 1.0 out of 5 from 1 ratings, while ChatX averages 4.6 from 481 ratings.

### Do PhyOTA or ChatX have ads?

Neither PhyOTA nor ChatX shows ads.

### Which is updated more often, PhyOTA or ChatX?

PhyOTA ships an update every 6 weeks, and ChatX fortnightly. Most recently, PhyOTA was updated on September 17, 2026 and ChatX on September 17, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*