# OBD2 Cat vs OBD2 Logger

The clearest difference is update cadence: OBD2 Cat at fortnightly against OBD2 Logger's every 6 weeks. 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.

OBD2 Cat ships an update fortnightly, OBD2 Logger every 6 weeks. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | OBD2 Cat | OBD2 Logger |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/obd2-cat-car-scanner/id6751106245/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 6 weeks |
| Monetization | Free | — |
| Size | 15 MB | 3 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Roman Tikhonychev](https://appshunter.io/developer/1833446011) | [Daehyun Nam](https://appshunter.io/developer/919392206) |

## What reviewers say

### 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


### OBD2 Logger

[App page](https://appshunter.io/ios/app/obd2-logger/id6766004425)

**In-app purchases:** none


## Frequently asked questions

### Is OBD2 Cat free?

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

### Is OBD2 Logger free?

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

### Do OBD2 Cat or OBD2 Logger have ads?

Neither OBD2 Cat nor OBD2 Logger shows ads.

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

OBD2 Cat ships an update fortnightly, and OBD2 Logger every 6 weeks. Most recently, OBD2 Cat was updated on October 30, 2026 and OBD2 Logger on October 31, 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.*