# ATTC vs ByteFlasher

The clearest difference is update cadence: ByteFlasher at monthly against ATTC's every 27 months. On price, rating, ratings volume and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for ATTC against 5.0 for ByteFlasher. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

ATTC ships an update every 27 months, ByteFlasher monthly. The most recent releases landed on September 30, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | ATTC | ByteFlasher |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/attc/id6467386211/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/byteflasher/id6745198835/reviews) |
| Number of ratings | 1 | **2** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 27 months | **Monthly** |
| Monetization | Free | Free |
| Size | 6 MB | 70 MB |
| Requires iOS | 15.2 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Dähler Competition Line (Deutschland) GmbH](https://appshunter.io/developer/1708557301) | [Renovelo LLC](https://appshunter.io/developer/1811256567) |

## What reviewers say

### ATTC

[App page](https://appshunter.io/ios/app/attc/id6467386211)

Enhance your BMW's security and performance with an advanced anti-theft system. This device offers multiple driving modes, including an anti-theft feature that disables the accelerator pedal to prevent unauthorized use. Control it via your smartphone or a remote for a more responsive engine and potential fuel savings.

**Highlights:** Anti-theft mode, Valet mode, Multiple Power Pedal modes, Smartphone control, Remote control, 10% quicker acceleration, Fuel savings

**In-app purchases:** none


### ByteFlasher

[App page](https://appshunter.io/ios/app/byteflasher/id6745198835)

Unlock your vehicle's performance potential with this mobile tuning solution. Optimize horsepower, torque, and fuel efficiency wirelessly. Diagnose and clear engine trouble codes with ease.

**Highlights:** Stage 1 & Stage 2 Performance Tunes, Advanced Customization Options, Unlimited Tune Adjustments, Wireless OBD2 Connectivity, Read & Clear DTCs, Data-Driven Performance Tuning

**In-app purchases:** none


## Frequently asked questions

### Is ATTC free?

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

### Is ByteFlasher free?

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

### Which has better reviews, ATTC or ByteFlasher?

ATTC and ByteFlasher are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do ATTC or ByteFlasher have ads?

Neither ATTC nor ByteFlasher shows ads.

### Which is updated more often, ATTC or ByteFlasher?

ATTC ships an update every 27 months, and ByteFlasher monthly. Most recently, ATTC was updated on September 30, 2026 and ByteFlasher on September 28, 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.*