# OBD Plus vs Troodon OBD

The clearest difference is iOS requirement: OBD Plus at 8.0 against Troodon OBD's 15.0. On price, update cadence, ads 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.

OBD Plus ships an update every 4 weeks, Troodon OBD every 3 weeks. The most recent releases landed on September 21, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | OBD Plus | Troodon OBD |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (4 ratings)](https://appshunter.io/ios/app/obd-plus/id1208901144/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 21.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 30 MB | 27 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Leagend Optoelectronics Co., Ltd.](https://appshunter.io/developer/6798210621) | [DevCom spol. s r.o.](https://appshunter.io/developer/1725153456) |

## What reviewers say

### OBD Plus

[App page](https://appshunter.io/ios/app/obd-plus/id1208901144)

Monitor your vehicle's engine, emissions, and other critical systems. This app aids in diagnosing car issues and provides insights into various components for better car maintenance.

**Highlights:** Vehicle condition monitoring, Car diagnostics, Engine system monitoring, Emission control system analysis, Oxygen sensor monitoring, Fuel system analysis

**Features:** macOS Compatibility

**In-app purchases:** none


### Troodon OBD

[App page](https://appshunter.io/ios/app/troodon-obd/id6475777811)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OBD Plus free?

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

### Is Troodon OBD free?

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

### Do OBD Plus or Troodon OBD have ads?

Neither OBD Plus nor Troodon OBD shows ads.

### Which is updated more often, OBD Plus or Troodon OBD?

OBD Plus ships an update every 4 weeks, and Troodon OBD every 3 weeks. Most recently, OBD Plus was updated on September 21, 2026 and Troodon OBD on September 13, 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.*