# OBD2 Scanner ELM327 vs DFirstCoder

The clearest difference is rating: DFirstCoder at 4.8 against OBD2 Scanner ELM327's 4.3. DFirstCoder also leads on review sentiment (67% vs 46%). OBD2 Scanner ELM327's advantage is ratings volume (19 vs 5). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. OBD2 Scanner ELM327 sells 23 in-app purchases, starting at $4.99 per year 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 4.3. Both are backed by a comparable volume of ratings — 19 and 5 respectively. Written reviews point the same way: 46% of OBD2 Scanner ELM327's written reviews are positive against 67% of DFirstCoder's.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on September 21, 2026 and September 6, 2026 respectively.

## The numbers

| Metric | OBD2 Scanner ELM327 | DFirstCoder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (19 ratings)](https://appshunter.io/ios/app/obd2-scanner-elm327-garagepro/id1488423694/reviews) | **[4.8 (5 ratings)](https://appshunter.io/ios/app/dfirstcoder/id1637894055/reviews)** |
| Number of ratings | **19** | 5 |
| Positive reviews | 46.2% of reviews | **66.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 65 MB | 94 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Zymbia Interactive Technologies Private Limited](https://appshunter.io/developer/1488423693) | [Shenzhen QiXin Technology Co., Ltd.](https://appshunter.io/developer/1637894777) |

## What reviewers say

### OBD2 Scanner ELM327

[App page](https://appshunter.io/ios/app/obd2-scanner-elm327-garagepro/id1488423694)

This app provides comprehensive OBD scanning for vehicles, allowing users to read and clear fault codes from various ECUs, monitor live sensor data, and perform special functions like DPF regeneration and injector coding. It supports over 100 vehicle makes and offers detailed reports and diagnostic assistance.

**Highlights:** Read and delete fault codes from any ECU, Monitor over 200 live sensor data points, Perform special OBD functions, Generate shareable PDF diagnostic reports, Check SMOG status for emission tests, Reset service/oil lights, Track 0-60 and 0-100 timing

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

**In-app purchases (23)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AI Scan Summary (Yearly) | $4.99 | per year |
| Standard - Yearly | $9.49 | per year |
| Personal Plan | $9.99 | per year |
| Lite - Yearly | $9.99 | per year |
| Standard - Yearly | $19.99 | per year |
| Advanced - Yearly | $23.99 | per year |
| Advanced + AI Summary - Yearly | $28.99 | per year |
| Premium - Yearly | $32.99 | per year |
| Standard - Yearly | $34.99 | per year |
| Advanced - Yearly | $71.99 | per year |
| Advanced - Yearly | $99.99 | per year |
| Lite - Perpetual | $17.99 | one-time |
| Lite - Perpetual | $21.99 | one-time |
| Standard - Perpetual | $34.99 | one-time |
| Standard - Perpetual | $37.99 | one-time |
| Standard - Perpetual | $54.99 | one-time |
| Lifetime Subsciption | $69.99 | one-time |
| Standard - Perpetual | $69.99 | one-time |
| Advanced - Perpetual | $99.99 | one-time |
| Advanced - Perpetual | $109.99 | one-time |
| Advanced - Perpetual | $129.99 | one-time |
| Advanced - Perpetual | $159.99 | one-time |
| Advanced - Perpetual | $199.99 | one-time |

**What reviewers like**

- ✅ Clears trouble codes
- ✅ Scans vehicle quickly
- ✅ Provides real-time data
- ✅ User-friendly interface
- ✅ Saves money on repairs

**What reviewers complain about**

- ❌ App crashes frequently
- ❌ Does not load past splash screen
- ❌ Not responding properly on iPhone
- ❌ Cannot select new vehicle after changing cars
- ❌ Fails to buy subscription

**Reported bugs**

- App stops working
- App does not load past splash screen
- App is not responding properly
- App crashes when trying to buy subscription
- App starts crashing after a few days

**Requested features**

- DPF REGEN feature
- Ability to select new vehicle easily
- Reactivate perpetual license without reinstalling
- List of approved scanner devices
- Support for WiFi adapters on iOS


### 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 OBD2 Scanner ELM327 free?

OBD2 Scanner ELM327 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, OBD2 Scanner ELM327 or DFirstCoder?

DFirstCoder is rated higher. OBD2 Scanner ELM327 averages 4.3 out of 5 from 19 ratings, while DFirstCoder averages 4.8 from 5 ratings.

### Do OBD2 Scanner ELM327 or DFirstCoder have ads?

Neither OBD2 Scanner ELM327 nor DFirstCoder shows ads.

### Which is updated more often, OBD2 Scanner ELM327 or DFirstCoder?

OBD2 Scanner ELM327 ships an update every 3 weeks, and DFirstCoder every 3 weeks. Most recently, OBD2 Scanner ELM327 was updated on September 21, 2026 and DFirstCoder on September 6, 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.*