# OBD2 Scanner | OBD Auto Doctor vs DND HD+

The clearest difference is in-app purchases: DND HD+ at none against OBD2 Scanner | OBD Auto Doctor's 9. DND HD+ also leads on iOS requirement (12.0 vs 17.0). OBD2 Scanner | OBD Auto Doctor's advantage is update cadence (every 3 weeks vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. OBD2 Scanner | OBD Auto Doctor sells 9 in-app purchases, starting at $4.99 per month. DND HD+ asks for nothing beyond the download.

OBD2 Scanner | OBD Auto Doctor ships an update every 3 weeks, DND HD+ every 2 months. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | OBD2 Scanner | OBD Auto Doctor | DND HD+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (6.2K ratings)](https://appshunter.io/ios/app/obd2-scanner-obd-auto-doctor/id908897183/reviews)** | — |
| Number of ratings | **6.2K** | — |
| Positive reviews | 30.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 19 MB | 17 MB |
| Requires iOS | 17.0 | **12.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Creosys](https://appshunter.io/developer/908897186) | [MATL TECH INC.](https://appshunter.io/developer/1735263917) |

## What reviewers say

### OBD2 Scanner | OBD Auto Doctor

[App page](https://appshunter.io/ios/app/obd2-scanner-obd-auto-doctor/id908897183)

Diagnose your car's engine light issues and monitor real-time performance data. This app allows you to read and clear diagnostic trouble codes, track fuel consumption, and view sensor data. It's a comprehensive tool for understanding your vehicle's health.

**Highlights:** Read and clear OBD2 diagnostic trouble codes (DTC), Reset Check Engine Light, Monitor real-time vehicle data and sensor readings, Track fuel consumption, Read readiness monitor status for emissions testing, Initiate service routines, Send diagnostic data via email

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly (legacy) | $4.99 | per month |
| Personal, monthly | $4.99 | per month |
| Premium, monthly | $5.99 | per month |
| Professional, monthly | $6.99 | per month |
| Yearly (legacy) | $23.99 | per year |
| Personal, yearly | $23.99 | per year |
| Professional, yearly | $29.99 | per year |
| Premium, annual | $29.99 | per year |
| OBD Auto Doctor Pro (legacy) | $29.99 | one-time |

**What reviewers like**

- 🚀 Works great
- 👍 Easy to use
- 🚀 Accurate diagnostics
- 🚀 Extensive adapter support
- 👍 Helpful for DIY mechanics

**What reviewers complain about**

- 🔒 Requires subscription for full functionality
- 🐛 Connection issues
- 🐛 Inconsistent performance
- 🐛 Doesn't work with all vehicles
- 💰 Expensive subscription

**Reported bugs**

- App crashes on launch
- Fails to detect existing fault codes
- Subscription issues and inability to cancel
- Incompatible with certain OBD2 adapters

**Requested features**

- Add support for more vehicle makes and models
- Improve Bluetooth/WiFi connectivity
- Provide more detailed diagnostic information
- Allow clearing of error codes without subscription
- Add live data dashboards and graphs


### DND HD+

[App page](https://appshunter.io/ios/app/dnd-hd-plus/id6480089734)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OBD2 Scanner | OBD Auto Doctor free?

OBD2 Scanner | OBD Auto Doctor is free to download, with in-app purchases available.

### Is DND HD+ free?

DND HD+ is free to download, with no in-app purchases.

### Do OBD2 Scanner | OBD Auto Doctor or DND HD+ have ads?

Neither OBD2 Scanner | OBD Auto Doctor nor DND HD+ shows ads.

### Which is updated more often, OBD2 Scanner | OBD Auto Doctor or DND HD+?

OBD2 Scanner | OBD Auto Doctor ships an update every 3 weeks, and DND HD+ every 2 months. Most recently, OBD2 Scanner | OBD Auto Doctor was updated on October 29, 2026 and DND HD+ on October 25, 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.*