# ChatModel vs AquaKeeper

The clearest difference is ads: ChatModel at none against AquaKeeper's shown. ChatModel also leads on device support (3 vs 1) and iOS requirement (14.0 vs 17.0). On price, update cadence 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 AquaKeeper sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

ChatModel ships an update monthly, AquaKeeper every 2 months. The most recent releases landed on November 8, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | ChatModel | AquaKeeper |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Monthly** | Every 2 months |
| Size | 15 MB | 18 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 9+ | 4+ |
| Developer | [Qijie Information](https://appshunter.io/developer/1717060398) | [Trang Le](https://appshunter.io/developer/1797500654) |

## 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 |


### AquaKeeper

[App page](https://appshunter.io/ios/app/aquakeeper-fish-tank-tracker/id6773038204)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One Month | $0.99 | per month |
| One Year | $8.99 | per year |
| Lifetime | $12.99 | one-time |


## Frequently asked questions

### Is ChatModel free?

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

### Is AquaKeeper free?

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

### Do ChatModel or AquaKeeper have ads?

AquaKeeper shows ads; ChatModel does not.

### Which is updated more often, ChatModel or AquaKeeper?

ChatModel ships an update monthly, and AquaKeeper every 2 months. Most recently, ChatModel was updated on November 8, 2026 and AquaKeeper on October 31, 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.*