# ShiftPower vs Fast Max

The clearest difference is rating: ShiftPower at 4.8 against Fast Max's 2.5. ShiftPower also leads on update cadence (every 2 weeks vs every 2 months) and ratings volume (316 vs 11). Fast Max's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price and in-app purchases there is nothing between them.

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

ShiftPower holds the better App Store score, 4.8 against 2.5. That said, the two scores are not equally well evidenced: ShiftPower has 316 ratings behind it against 11, so its average is the more settled of the two. Written reviews point the same way: 71% of ShiftPower's written reviews are positive against 63% of Fast Max's.

ShiftPower ships an update every 2 weeks, Fast Max every 2 months. The most recent releases landed on September 22, 2026 and August 15, 2026 respectively.

## The numbers

| Metric | ShiftPower | Fast Max |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (316 ratings)](https://appshunter.io/ios/app/shiftpower/id1473662284/reviews)** | [2.5 (11 ratings)](https://appshunter.io/ios/app/fast-max/id1513677327/reviews) |
| Number of ratings | **316** | 11 |
| Positive reviews | **71.4% of reviews** | 62.5% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Monetization | Ad-supported | **Free** |
| Size | 109 MB | 25 MB |
| Requires iOS | 15.1 | **13** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPod |
| Age rating | +4 | 4+ |
| Developer | [Faaftech Tecnologia Ltda](https://appshunter.io/developer/1473662283) | [Tury do Brasil Industria e Comercio Ltda.](https://appshunter.io/developer/1538290553) |

## What reviewers say

### ShiftPower

[App page](https://appshunter.io/ios/app/shiftpower/id1473662284)

Enhance your driving experience with customizable acceleration modes for sportier and safer performance. Control your vehicle's safety with dedicated Lock and Valet modes, offering over 300 acceleration response maps for a personalized feel.

**Highlights:** Four customizable driving modes, Lock and Valet safety modes, Over 300 acceleration response maps, Sportier and safer overtaking, Plug-and-Play installation

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### Fast Max

[App page](https://appshunter.io/ios/app/fast-max/id1513677327)

This app provides access to advanced automotive electronic technology, specifically focusing on an acceleration module that enhances vehicle performance and safety. It offers features to improve acceleration response and includes security functions like theft prevention and parking assistance.

**Highlights:** Acceleration response improvement, Performance enhancement for exits and hills, Theft prevention (LOCK function), Valet parking mode (PARKING function), Access to TURY automotive electronics

**In-app purchases:** none


## Frequently asked questions

### Is ShiftPower free?

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

### Is Fast Max free?

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

### Which has better reviews, ShiftPower or Fast Max?

ShiftPower is rated higher. ShiftPower averages 4.8 out of 5 from 316 ratings, while Fast Max averages 2.5 from 11 ratings.

### Do ShiftPower or Fast Max have ads?

ShiftPower shows ads; Fast Max does not.

### Which is updated more often, ShiftPower or Fast Max?

ShiftPower ships an update every 2 weeks, and Fast Max every 2 months. Most recently, ShiftPower was updated on September 22, 2026 and Fast Max on August 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.*