# ByteFlasher vs OBD2 Cat

The clearest difference is device support: ByteFlasher at 3 against OBD2 Cat's 1. On price, rating, ratings volume and update cadence 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 ByteFlasher against 5.0 for OBD2 Cat. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

ByteFlasher ships an update monthly, OBD2 Cat every 3 weeks. The most recent releases landed on October 13, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | ByteFlasher | OBD2 Cat |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/byteflasher/id6745198835/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/obd2-cat-car-scanner/id6751106245/reviews) |
| Number of ratings | **2** | 1 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 70 MB | 14 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Renovelo LLC](https://appshunter.io/developer/1811256567) | [Roman Tikhonychev](https://appshunter.io/developer/1833446011) |

## What reviewers say

### 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


### OBD2 Cat

[App page](https://appshunter.io/ios/app/obd2-cat-car-scanner/id6751106245)

This app reads diagnostic trouble codes and live vehicle data from compatible cars using a Bluetooth OBD2 adapter. It helps drivers understand dashboard warnings by checking engine codes, viewing sensor data, and retrieving vehicle identification information.

**Highlights:** Read diagnostic trouble codes (DTCs), Clear supported trouble codes, View live engine and sensor data, Check VIN, make, model, and year, Auto Scan for codes, View OBD protocol and connection status

**In-app purchases:** none


## Frequently asked questions

### Is ByteFlasher free?

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

### Is OBD2 Cat free?

OBD2 Cat is free to download, with no in-app purchases.

### Which has better reviews, ByteFlasher or OBD2 Cat?

ByteFlasher and OBD2 Cat are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do ByteFlasher or OBD2 Cat have ads?

Neither ByteFlasher nor OBD2 Cat shows ads.

### Which is updated more often, ByteFlasher or OBD2 Cat?

ByteFlasher ships an update monthly, and OBD2 Cat every 3 weeks. Most recently, ByteFlasher was updated on October 13, 2026 and OBD2 Cat on October 10, 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.*