# OBD2 Scanner | OBD Auto Doctor vs CodigosDTC

The clearest difference is rating: CodigosDTC at 5.0 against OBD2 Scanner | OBD Auto Doctor's 4.4. CodigosDTC also leads on update cadence (every 2 days vs every 3 weeks). OBD2 Scanner | OBD Auto Doctor's advantage is ratings volume (6.2K vs 2). On price, ads, in-app purchases and monetization model 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 and CodigosDTC sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

CodigosDTC holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: OBD2 Scanner | OBD Auto Doctor has 6.2K ratings behind it against 2, so its average is the more settled of the two.

OBD2 Scanner | OBD Auto Doctor ships an update every 3 weeks, CodigosDTC every 2 days. The most recent releases landed on November 9, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | OBD2 Scanner | OBD Auto Doctor | CodigosDTC |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (6.2K ratings)](https://appshunter.io/ios/app/obd2-scanner-obd-auto-doctor/id908897183/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/codigosdtc-diagnostico-obd2/id6793661744/reviews)** |
| Number of ratings | **6.2K** | 2 |
| Positive reviews | 30.4% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 days** |
| Monetization | Freemium | Free with in-app purchases |
| Size | 19 MB | 49 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Creosys](https://appshunter.io/developer/908897186) | [FIXCAR LLC](https://appshunter.io/developer/6793661896) |

## What reviewers say

### OBD2 Scanner | OBD Auto Doctor

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

Transform your iPhone into a car diagnostic tool. Read and clear engine trouble codes, monitor live engine data, and check emissions readiness with a compatible OBD2 dongle.

**Highlights:** Read and clear diagnostic trouble codes (DTCs), Monitor live engine data, Check emissions readiness, View freeze-frame data, Create custom sensor dashboards, Works with compatible OBD2 dongles

**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


### CodigosDTC

[App page](https://appshunter.io/ios/app/codigosdtc-diagnostico-obd2/id6793661744)

Understand your vehicle's diagnostic trouble codes with clear explanations, potential causes, symptoms, and AI-powered solutions. This app helps drivers, students, and mechanics interpret fault codes and make informed decisions before visiting a mechanic.

**Highlights:** Search and understand OBD2 fault codes, Clear explanations of potential problems, Consult causes, symptoms, and solutions, AI-powered automotive support chat, Save vehicle and diagnostic information, Organized fault information

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Mensual | $9.99 | per month |
| Premium Anual | $89.99 | per year |


## 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 CodigosDTC free?

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

### Which has better reviews, OBD2 Scanner | OBD Auto Doctor or CodigosDTC?

CodigosDTC is rated higher. OBD2 Scanner | OBD Auto Doctor averages 4.4 out of 5 from 6.2K ratings, while CodigosDTC averages 5.0 from 2 ratings.

### Do OBD2 Scanner | OBD Auto Doctor or CodigosDTC have ads?

Neither OBD2 Scanner | OBD Auto Doctor nor CodigosDTC shows ads.

### Which is updated more often, OBD2 Scanner | OBD Auto Doctor or CodigosDTC?

OBD2 Scanner | OBD Auto Doctor ships an update every 3 weeks, and CodigosDTC every 2 days. Most recently, OBD2 Scanner | OBD Auto Doctor was updated on November 9, 2026 and CodigosDTC 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.*