# CARAPP vs OBD2 Scanner | OBD Auto Doctor

The clearest difference is rating: OBD2 Scanner | OBD Auto Doctor at 4.4 against CARAPP's 1.5. OBD2 Scanner | OBD Auto Doctor also leads on review sentiment (30% vs 0%) and ratings volume (6.2K vs 2). CARAPP's advantage is in-app purchases (none vs 9) and iOS requirement (6.0 vs 17.0). On price, update cadence, 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. CARAPP asks for nothing beyond the download.

OBD2 Scanner | OBD Auto Doctor holds the better App Store score, 4.4 against 1.5. 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. Written reviews point the same way: 0% of CARAPP's written reviews are positive against 30% of OBD2 Scanner | OBD Auto Doctor's.

CARAPP ships an update monthly, OBD2 Scanner | OBD Auto Doctor every 3 weeks. The most recent releases landed on November 1, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | CARAPP | OBD2 Scanner | OBD Auto Doctor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.5 (2 ratings)](https://appshunter.io/ios/app/carapp/id650286646/reviews) | **[4.4 (6.2K ratings)](https://appshunter.io/ios/app/obd2-scanner-obd-auto-doctor/id908897183/reviews)** |
| Number of ratings | 2 | **6.2K** |
| Positive reviews | 0.0% of reviews | **30.4% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | **Free** | Freemium |
| Size | 43 MB | 19 MB |
| Requires iOS | **6.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Autophix Tech Co., Ltd](https://appshunter.io/developer/650288249) | [Creosys](https://appshunter.io/developer/908897186) |

## What reviewers say

### CARAPP

[App page](https://appshunter.io/ios/app/carapp/id650286646)

This utility app connects to your car's hardware to retrieve diagnostic trouble codes and security information. It displays real-time data like oil consumption and provides alerts for malfunctions, temperature, speed, and maintenance reminders, helping car owners manage costs.

**Highlights:** Retrieve diagnostic trouble codes, Display real-time oil consumption, Clear trouble code information, Vehicle malfunction alerts, Maintenance and shift reminders, Real-time vehicle security information

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is CARAPP free?

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

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

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

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

OBD2 Scanner | OBD Auto Doctor is rated higher. CARAPP averages 1.5 out of 5 from 2 ratings, while OBD2 Scanner | OBD Auto Doctor averages 4.4 from 6.2K ratings.

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

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

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

CARAPP ships an update monthly, and OBD2 Scanner | OBD Auto Doctor every 3 weeks. Most recently, CARAPP was updated on November 1, 2026 and OBD2 Scanner | OBD Auto Doctor on November 9, 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.*