# Ultra Boost vs e

The clearest difference is update cadence: Ultra Boost at every 2 months against e's every 5 months. On price, ads, 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.

Ultra Boost ships an update every 2 months, e every 5 months. The most recent releases landed on October 8, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Ultra Boost | e |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/ultra-boost/id1471601228/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 5 months |
| Monetization | Free | — |
| Size | 81 MB | 36 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [ECU=SHOP](https://appshunter.io/developer/1389703440) | [Hangzhou Saiwei Motor Co.,ltd](https://appshunter.io/developer/1822018254) |

## What reviewers say

### Ultra Boost

[App page](https://appshunter.io/ios/app/ultra-boost/id1471601228)

This application allows users to wirelessly adjust fuel supply and monitor engine performance metrics like RPM, boost, and speed. It offers four operating modes, including an AI mode, to optimize engine output and increase horsepower.

**Highlights:** Wireless fuel supply adjustment, RPM, boost, and speed display, Four operating modes with AI, Monitor oil pressure and air flow, GPS speed and weather data

**Features:** Vision Pro support

**In-app purchases:** none


### e

[App page](https://appshunter.io/ios/app/e-combell/id6747609957)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Ultra Boost free?

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

### Is e free?

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

### Do Ultra Boost or e have ads?

Neither Ultra Boost nor e shows ads.

### Which is updated more often, Ultra Boost or e?

Ultra Boost ships an update every 2 months, and e every 5 months. Most recently, Ultra Boost was updated on October 8, 2026 and e on September 29, 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.*