# M2M Recharge vs U

The clearest difference is in-app purchases: M2M Recharge at none against U's 7. U's advantage is update cadence (weekly vs every 3 weeks) and device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. U sells 7 in-app purchases, starting at $2.99 per month. M2M Recharge asks for nothing beyond the download.

M2M Recharge ships an update every 3 weeks, U weekly. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | M2M Recharge | U |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/m2m-recharge/id6464556372/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | Free | — |
| Size | 1 MB | 74 MB |
| Requires iOS | 16.3 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [M2M Technologies LLC](https://appshunter.io/developer/1459159215) | [Alejandro Platas Mallo](https://appshunter.io/developer/1896316102) |

## What reviewers say

### M2M Recharge

[App page](https://appshunter.io/ios/app/m2m-recharge/id6464556372)

This application allows customers to register their devices and access device information securely. Access is protected by a username and password system.

**Highlights:** Device registration, View device data, Username/password protection, Secure access

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

**In-app purchases:** none


### U

[App page](https://appshunter.io/ios/app/u-manager-for-unraid/id6766693828)

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| U-Manager All Access (Monthly) | $2.99 | per month |
| U-Manager All Access (Annual) | $12.99 | per year |
| Tautulli | $1.99 | one-time |
| Torrent | $2.49 | one-time |
| SSH | $3.49 | one-time |
| File browser | $4.49 | one-time |
| Power Pack | $6.99 | one-time |


## Frequently asked questions

### Is M2M Recharge free?

M2M Recharge is free to download, with no in-app purchases.

### Is U free?

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

### Do M2M Recharge or U have ads?

Neither M2M Recharge nor U shows ads.

### Which is updated more often, M2M Recharge or U?

M2M Recharge ships an update every 3 weeks, and U weekly. Most recently, M2M Recharge was updated on October 21, 2026 and U on October 24, 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.*