# MotorData OBD ELM car scanner vs DFirstCoder

MotorData OBD ELM car scanner and DFirstCoder both sit at 4.6 stars, but that hides the real split: 67% of DFirstCoder's written reviews are positive against 41% of MotorData OBD ELM car scanner's. DFirstCoder also leads on update cadence (every 3 weeks vs every 4 months). MotorData OBD ELM car scanner's advantage is ratings volume (48 vs 5). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. MotorData OBD ELM car scanner sells 10 one-off in-app purchases and DFirstCoder sells 8 in-app purchases, starting at $108.99 per year. Whichever you choose, the download price is not the number that matters.

DFirstCoder holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: MotorData OBD ELM car scanner has 48 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 41% of MotorData OBD ELM car scanner's written reviews are positive against 67% of DFirstCoder's.

MotorData OBD ELM car scanner ships an update every 4 months, DFirstCoder every 3 weeks. The most recent releases landed on November 7, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | MotorData OBD ELM car scanner | DFirstCoder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (48 ratings)](https://appshunter.io/ios/app/motordata-obd-elm-car-scanner/id1503589009/reviews) | **[4.8 (5 ratings)](https://appshunter.io/ios/app/dfirstcoder/id1637894055/reviews)** |
| Number of ratings | **48** | 5 |
| Positive reviews | 40.9% of reviews | **66.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 50 MB | 102 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [LEGION-AVTODATA, AO](https://appshunter.io/developer/1477060768) | [Shenzhen QiXin Technology Co., Ltd.](https://appshunter.io/developer/1637894777) |

## What reviewers say

### MotorData OBD ELM car scanner

[App page](https://appshunter.io/ios/app/motordata-obd-elm-car-scanner/id1503589009)

Transform your smartphone into a comprehensive car diagnostic tool. Read and clear trouble codes, monitor real-time vehicle performance, and customize your dashboard for a deeper understanding of your car's health. Includes free engine diagnostics with optional advanced features for specific brands.

**Highlights:** Deep diagnostics for up to 25 ECUs, One-touch scan for trouble codes, Decode DTCs and clear Check Engine Light, Real-time engine and system monitoring, Customizable dashboard with 18 templates, Log sensor readings and freeze frame data, Fuel efficiency tracking

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TOYOTA Warning lights | $4.59 | one-time |
| CHEVROLET Warning lights | $4.59 | one-time |
| Сustomization plugin | $6.89 | one-time |
| Plugin for TOYOTA | $18.49 | one-time |
| Plugin for NISSAN & INFINITI | $18.49 | one-time |
| Plugin for FORD | $18.49 | one-time |
| Plugin for CHEVROLET | $18.49 | one-time |
| Plugin for MAZDA | $18.49 | one-time |
| Plugin for KIA | $18.49 | one-time |
| Plugin for TOYOTA + HYBRID | $27.49 | one-time |


### DFirstCoder

[App page](https://appshunter.io/ios/app/dfirstcoder/id1637894055)

This app provides comprehensive vehicle diagnostics and customization for car owners. It offers one-click app features for easy operation, Bluetooth connectivity, and the ability to read/clear trouble codes, perform smog checks, and view live data. It supports a wide range of vehicle models.

**Highlights:** One-click apps for easy operation, Comprehensive diagnostic features, Bluetooth wireless connectivity, Read and clear trouble codes, Smog check functionality, Live data display, Supports VAG, BMW, Mercedes-Benz models

**Features:** Family Sharing

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Plan Subscription | $108.99 | per year |
| Pro Plan Subscription (Family) | $158.99 | per year |
| 350 QD | $4.99 | one-time |
| 700 QD | $9.95 | one-time |
| 1400 QD | $19.49 | one-time |
| 3500 QD | $49.99 | one-time |
| 7000 QD | $96.99 | one-time |
| 10500 QD | $145.99 | one-time |


## Frequently asked questions

### Is MotorData OBD ELM car scanner free?

MotorData OBD ELM car scanner is free to download, with in-app purchases available.

### Is DFirstCoder free?

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

### Which has better reviews, MotorData OBD ELM car scanner or DFirstCoder?

DFirstCoder is rated higher. MotorData OBD ELM car scanner averages 4.6 out of 5 from 48 ratings, while DFirstCoder averages 4.8 from 5 ratings.

### Do MotorData OBD ELM car scanner or DFirstCoder have ads?

Neither MotorData OBD ELM car scanner nor DFirstCoder shows ads.

### Which is updated more often, MotorData OBD ELM car scanner or DFirstCoder?

MotorData OBD ELM car scanner ships an update every 4 months, and DFirstCoder every 3 weeks. Most recently, MotorData OBD ELM car scanner was updated on November 7, 2026 and DFirstCoder on November 3, 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.*