# U vs Rayvolt EIVA USA

The clearest difference is rating: Rayvolt EIVA USA at 4.5 against U's 1.0. Rayvolt EIVA USA also leads on update cadence (every 2 months vs every 14 months) and ratings volume (4 vs 1). U's advantage is iOS requirement (8.0 vs 12.0). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Rayvolt EIVA USA holds the better App Store score, 4.5 against 1.0. Both are backed by a comparable volume of ratings — 1 and 4 respectively.

U ships an update every 14 months, Rayvolt EIVA USA every 2 months. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | U | Rayvolt EIVA USA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/u-life-plus-plus/id1252864565/reviews) | **[4.5 (4 ratings)](https://appshunter.io/ios/app/rayvolt-eiva-usa/id1382731508/reviews)** |
| Number of ratings | 1 | **4** |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 84 MB | 29 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [GOSCAM (Shenzhen Gospell Smarthome Electronic Co., Ltd.)](https://appshunter.io/developer/480877456) | [Exxite Bike S.L](https://appshunter.io/developer/1187986626) |

## What reviewers say

### U

[App page](https://appshunter.io/ios/app/u-life-plus-plus/id1252864565)

This platform allows users to monitor, manage, and control internet-connected devices remotely. It utilizes 3G or 4G internet for seamless device interaction.

**Highlights:** Audio and video service platform, Internet-based device monitoring, Remote device management, Device control via 3G/4G, Real-time device interaction

**Features:** macOS Compatibility

**In-app purchases:** none


### Rayvolt EIVA USA

[App page](https://appshunter.io/ios/app/rayvolt-eiva-usa/id1382731508)

Control and customize your electric bike's performance with this app. Monitor real-time data like speed and battery, and adjust advanced settings for acceleration and pedal assistance.

**Highlights:** Real-time bike data monitoring, Adjustable pedal assistance, Customizable acceleration settings, Bluetooth device connection, Advanced voltage adjustments

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is U free?

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

### Is Rayvolt EIVA USA free?

Rayvolt EIVA USA is free to download, with no in-app purchases.

### Which has better reviews, U or Rayvolt EIVA USA?

Rayvolt EIVA USA is rated higher. U averages 1.0 out of 5 from 1 ratings, while Rayvolt EIVA USA averages 4.5 from 4 ratings.

### Do U or Rayvolt EIVA USA have ads?

Neither U nor Rayvolt EIVA USA shows ads.

### Which is updated more often, U or Rayvolt EIVA USA?

U ships an update every 14 months, and Rayvolt EIVA USA every 2 months. Most recently, U was updated on October 21, 2026 and Rayvolt EIVA USA 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.*