# OBD2 Scanner vs OBD Compass

The clearest difference is in-app purchases: OBD Compass at none against OBD2 Scanner's 6. OBD Compass also leads on ads (none vs shown) and iOS requirement (13.0 vs 17.0). On price, update cadence and device support there is nothing between them.

Both are free to download. OBD2 Scanner sells 6 in-app purchases, starting at $6.99 per 7 days. OBD Compass asks for nothing beyond the download.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | OBD2 Scanner | OBD Compass |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (1.1K ratings)](https://appshunter.io/ios/app/obd2-scanner-torque-elm-327/id6477899127/reviews)** | — |
| Number of ratings | **1.1K** | — |
| Positive reviews | 22.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Monthly | Monthly |
| Monetization | Free with in-app purchases | — |
| Size | 102 MB | 25 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Phong Pham](https://appshunter.io/developer/1731047500) | [HK TOPDON TECHNOLOGY Co., LIMITED](https://appshunter.io/developer/1846276192) |

## What reviewers say

### OBD2 Scanner

[App page](https://appshunter.io/ios/app/obd2-scanner-torque-elm-327/id6477899127)

Transform your smartphone into a powerful car diagnostic tool. Monitor real-time engine data, read and clear trouble codes, and track your vehicle's performance. Customize your dashboard and access repair manuals to understand and fix issues.

**Highlights:** Real-time engine data monitoring, Read and clear trouble codes, Performance tracking, Customizable dashboards, Repair manual database, Compatibility with OBD2 ELM327 adapters

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium weeky freetrial | $6.99 | per 7 days |
| Premium Weekly | $7.99 | per 7 days |
| Premium Monthly | $14.99 | per month |
| Premium Monthly | $17.99 | per month |
| Premium Yearly | $59.99 | per year |
| Lifetime Premium | $69.99 | one-time |

**What reviewers like**

- 👍 Simple and easy to use setup
- ✅ Works well for some vehicle models
- ⭐ Useful for basic OBD2 scanning

**What reviewers complain about**

- 💰 Expensive pricing for limited functionality
- 🐛 Bluetooth connection drops frequently
- ❌ Poor compatibility with many vehicle models
- 📱 Deceptive UI with hidden exit menus
- 🔒 Security concerns and unauthorized charges

**Reported bugs**

- Bluetooth connection drops and requires reboot
- App fails to connect to OBD2 devices
- Sensors display N/A values in paid version
- Cannot select vehicle profile
- App crashes or becomes unresponsive

**Requested features**

- Oil temperature and transmission data
- Wheel sensor information
- Pending DTC display
- Permanent check engine light clearing
- Module-specific scanning selection


### OBD Compass

[App page](https://appshunter.io/ios/app/obd-compass/id6758076036)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is OBD2 Scanner free?

OBD2 Scanner is free to download, with in-app purchases available.

### Is OBD Compass free?

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

### Do OBD2 Scanner or OBD Compass have ads?

OBD2 Scanner shows ads; OBD Compass does not.

### Which is updated more often, OBD2 Scanner or OBD Compass?

OBD2 Scanner ships an update monthly, and OBD Compass monthly. Most recently, OBD2 Scanner was updated on October 30, 2026 and OBD Compass 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.*