# Car Scanner ELM OBD2 vs D

The clearest difference is in-app purchases: D at none against Car Scanner ELM OBD2's 5. D also leads on ads (none vs shown). Car Scanner ELM OBD2's advantage is iOS requirement (13.0 vs 15.0). On price, update cadence and device support there is nothing between them.

Both are free to download. Car Scanner ELM OBD2 sells 5 in-app purchases, starting at $3.99 per 6 months. D asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 5 days. The most recent releases landed on November 7, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Car Scanner ELM OBD2 | D |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (33K ratings)](https://appshunter.io/ios/app/car-scanner-elm-obd2/id1259933623/reviews)** | — |
| Number of ratings | **33K** | — |
| Positive reviews | 81.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 days | Every 5 days |
| Monetization | Free with in-app purchases | — |
| Size | 181 MB | 43 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Stanislav Svistunov](https://appshunter.io/developer/1259933622) | [LUN LIU](https://appshunter.io/developer/1890125123) |

## What reviewers say

### Car Scanner ELM OBD2

[App page](https://appshunter.io/ios/app/car-scanner-elm-obd2/id1259933623)

Monitor your car's real-time performance, diagnose fault codes, and access detailed sensor data. Customize your dashboard with various gauges and charts, and even reset diagnostic trouble codes. This tool helps you understand your vehicle's health and potentially reduce repair costs.

**Highlights:** Real-time vehicle data, OBD fault code reading and resetting, Customizable dashboard with gauges and charts, Extended PID support, Emission test readiness check, HUD mode for windshield projection, Acceleration measurement tool

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Car Scanner Pro (6 months) | $3.99 | per 6 months |
| Car Scanner Pro (1 year) | $4.99 | per year |
| Car Scanner Pro (low price) | $6.99 | one-time |
| Car Scanner Pro (mid price) | $6.99 | one-time |
| Car Scanner Pro (forever) | $7.99 | one-time |

**What reviewers like**

- 🚀 Works great with cheap OBD2 adapters
- 👍 Highly customizable dashboard
- 👍 Comprehensive sensor data
- 👍 Helpful error code lookup
- 👍 Frequent updates

**What reviewers complain about**

- 🐛 Occasional connection issues
- 🐛 Incorrect sensor readings for some vehicles
- 🐛 Crashes or freezes on some devices
- 🔋 Drains battery when left running

**Reported bugs**

- Unable to connect to certain vehicle models
- Incorrect fuel economy calculations
- Sensor data not updating properly in some cases

**Requested features**

- Add support for more vehicle profiles
- Improve CarPlay integration
- Allow custom dashboard templates
- Add option to automatically save data logs
- Expand sensor coverage, especially for transmissions and ABS


### D

[App page](https://appshunter.io/ios/app/d-sync-ecu/id6761677479)

**Features:** iPhone Duo support

**In-app purchases:** none


## Frequently asked questions

### Is Car Scanner ELM OBD2 free?

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

### Is D free?

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

### Do Car Scanner ELM OBD2 or D have ads?

Car Scanner ELM OBD2 shows ads; D does not.

### Which is updated more often, Car Scanner ELM OBD2 or D?

Car Scanner ELM OBD2 ships an update every 5 days, and D every 5 days. Most recently, Car Scanner ELM OBD2 was updated on November 7, 2026 and D on November 5, 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.*