# ChatModel vs Lexis Graph

The clearest difference is iOS requirement: ChatModel at 14.0 against Lexis Graph's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. ChatModel sells 3 in-app purchases, starting at $3.99 per 7 days and Lexis Graph sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

ChatModel ships an update monthly, Lexis Graph every 3 weeks. Both last shipped on October 25, 2026.

## The numbers

| Metric | ChatModel | Lexis Graph |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Size | 15 MB | 121 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 9+ | 4+ |
| Developer | [Qijie Information](https://appshunter.io/developer/1717060398) | [禹 杜](https://appshunter.io/developer/1826041186) |

## What reviewers say

### ChatModel

[App page](https://appshunter.io/ios/app/chatmodel-multiple-models/id6479516706)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Plus | $3.99 | per 7 days |
| Monthly Plus | $12.99 | per month |
| Annual Plus | $119.00 | per year |


### Lexis Graph

[App page](https://appshunter.io/ios/app/lexis-graph/id6783677179)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 「Lexis Graph」Pro Monthly | $1.99 | per month |
| 「Lexis Graph」Pro Yearly | $14.99 | per year |
| 「Lexis Graph」Pro Lifetime | $19.99 | one-time |


## Frequently asked questions

### Is ChatModel free?

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

### Is Lexis Graph free?

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

### Do ChatModel or Lexis Graph have ads?

Neither ChatModel nor Lexis Graph shows ads.

### Which is updated more often, ChatModel or Lexis Graph?

ChatModel ships an update monthly, and Lexis Graph every 3 weeks. Most recently, ChatModel was updated on October 25, 2026 and Lexis Graph on October 25, 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.*