# UOIN vs Fit Monster

The clearest difference is in-app purchases: Fit Monster at none against UOIN's 2. Fit Monster also leads on update cadence (weekly vs every 3 weeks). UOIN's advantage is iOS requirement (14.0 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. UOIN sells 2 in-app purchases, starting at $4.49 per month. Fit Monster asks for nothing beyond the download.

UOIN ships an update every 3 weeks, Fit Monster weekly. The most recent releases landed on October 25, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | UOIN | Fit Monster |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | — | Free |
| Size | 120 MB | 200 MB |
| Requires iOS | **14.0** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Aiyou Digital Intelligence Co., Ltd.](https://appshunter.io/developer/1590480226) | [DongGuan Chuan OptoElectronics Limited](https://appshunter.io/developer/1470189550) |

## What reviewers say

### UOIN

[App page](https://appshunter.io/ios/app/uoin/id1590480224)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 哑铃课程VIP | $4.49 | per month |
| 哑铃课程VIP 高能燃脂健身 | $3.99 | one-time |


### Fit Monster

[App page](https://appshunter.io/ios/app/fit-monster/id6444515917)

This fitness app connects with smart home appliances like jump ropes and dumbbells to track your workouts in real-time. It accurately records heart rate and calorie consumption, storing your training data in the cloud for visualized statistical analysis and long-term storage.

**Highlights:** Smart appliance integration, Real-time heart rate tracking, Calorie consumption monitoring, Cloud data storage, Visualized statistical analysis, Long-term data history

**In-app purchases:** none


## Frequently asked questions

### Is UOIN free?

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

### Is Fit Monster free?

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

### Do UOIN or Fit Monster have ads?

Neither UOIN nor Fit Monster shows ads.

### Which is updated more often, UOIN or Fit Monster?

UOIN ships an update every 3 weeks, and Fit Monster weekly. Most recently, UOIN was updated on October 25, 2026 and Fit Monster on October 30, 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.*