# 优瓦时uWatts vs BrainPet

The clearest difference is in-app purchases: 优瓦时uWatts at none against BrainPet's 4. 优瓦时uWatts also leads on device support (3 vs 1) and iOS requirement (14.0 vs 17.0). BrainPet's advantage is update cadence (every 10 days vs monthly). On price and ads there is nothing between them.

Both are free to download. BrainPet sells 4 in-app purchases, starting at $6.99 per month. 优瓦时uWatts asks for nothing beyond the download.

优瓦时uWatts ships an update monthly, BrainPet every 10 days. The most recent releases landed on September 24, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | 优瓦时uWatts | BrainPet |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 10 days** |
| Size | 47 MB | 40 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [广州航宇时空科技有限公司](https://appshunter.io/developer/1567712703) | [Minsik Chae](https://appshunter.io/developer/1815183370) |

## What reviewers say

### 优瓦时uWatts

[App page](https://appshunter.io/ios/app/uwatts/id1567841229)

**Features:** Vision Pro support

**In-app purchases:** none


### BrainPet

[App page](https://appshunter.io/ios/app/brainpet-screen-time-control/id6763855247)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BrainPet 1 Month Pro | $6.99 | per month |
| BrainPet 1 Year Pro Downsell | $19.99 | per year |
| BrainPet 1 Year Pro Trial | $29.99 | per year |
| BrainPet 1 Year Pro | $29.99 | per year |


## Frequently asked questions

### Is 优瓦时uWatts free?

优瓦时uWatts is free to download, with no in-app purchases.

### Is BrainPet free?

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

### Do 优瓦时uWatts or BrainPet have ads?

Neither 优瓦时uWatts nor BrainPet shows ads.

### Which is updated more often, 优瓦时uWatts or BrainPet?

优瓦时uWatts ships an update monthly, and BrainPet every 10 days. Most recently, 优瓦时uWatts was updated on September 24, 2026 and BrainPet on September 21, 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.*