# InSynerger vs U

The clearest difference is ads: InSynerger at none against U's shown. InSynerger also leads on update cadence (every 3 weeks vs every 2 months). U's advantage is iOS requirement (13.0 vs 17.6). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

InSynerger ships an update every 3 weeks, U every 2 months. The most recent releases landed on October 24, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | InSynerger | U |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Size | 95 MB | 50 MB |
| Requires iOS | 17.6 | **13.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [InSynerger Technology Co., Ltd.](https://appshunter.io/developer/1447476970) | [Fuzhou Ulandpower Technology Co., Ltd.](https://appshunter.io/developer/1772863390) |

## What reviewers say

### InSynerger

[App page](https://appshunter.io/ios/app/insynerger/id1447477151)

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

**In-app purchases:** none


### U

[App page](https://appshunter.io/ios/app/u-charger/id6736647299)

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

**In-app purchases:** none


## Frequently asked questions

### Is InSynerger free?

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

### Is U free?

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

### Do InSynerger or U have ads?

U shows ads; InSynerger does not.

### Which is updated more often, InSynerger or U?

InSynerger ships an update every 3 weeks, and U every 2 months. Most recently, InSynerger was updated on October 24, 2026 and U on October 15, 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.*