# Diag vs ThinkDriver

The clearest difference is rating: ThinkDriver at 4.5 against Diag's 3.1. ThinkDriver also leads on review sentiment (58% vs 40%) and ratings volume (270 vs 14). Diag's advantage is monetization model (free vs paid). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ThinkDriver holds the better App Store score, 4.5 against 3.1. That said, the two scores are not equally well evidenced: ThinkDriver has 270 ratings behind it against 14, so its average is the more settled of the two. Written reviews point the same way: 40% of Diag's written reviews are positive against 58% of ThinkDriver's.

Diag ships an update every 2 months, ThinkDriver monthly. The most recent releases landed on August 18, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Diag | ThinkDriver |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.1 (14 ratings)](https://appshunter.io/ios/app/diag-vw/id1434670736/reviews) | **[4.5 (270 ratings)](https://appshunter.io/ios/app/thinkdriver/id1502233364/reviews)** |
| Number of ratings | 14 | **270** |
| Positive reviews | 40.0% of reviews | **57.6% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | **Free** | Paid |
| Size | 333 MB | 325 MB |
| Requires iOS | 12.0 | **9.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Autel Intelligent Technology Co., Ltd.](https://appshunter.io/developer/770747094) | [THINKCAR INC](https://appshunter.io/developer/1464847379) |

## What reviewers say

### Diag

[App page](https://appshunter.io/ios/app/diag-vw/id1434670736)

This diagnostic software package is designed for Volkswagen vehicles. It requires the MaxiAP200 main program to function and provides diagnostic capabilities for your car.

**Highlights:** Volkswagen vehicle diagnostics, Requires MaxiAP200, Diagnostic software package, Vehicle system analysis

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

**In-app purchases:** none


### ThinkDriver

[App page](https://appshunter.io/ios/app/thinkdriver/id1502233364)

This diagnostic tool allows car owners to perform full system vehicle checks, going beyond standard OBDII functionality. It provides immediate insights into potential car issues, acting as a comprehensive helper for vehicle maintenance.

**Highlights:** Full system vehicle diagnostics, Advanced OBDII alternative, Immediate issue detection, DIY car maintenance helper

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Works like professionals
- 👍 Handy tool for car
- 👍 Versatile and helpful
- 👍 Great tools for car
- 👍 Easy to use

**What reviewers complain about**

- 😞 Pay again for lifetime access
- 😞 Terrible support, no response
- 😞 Useless device, keeps shutting down
- 😞 Scanner does not work
- 😞 Customer service unhelpful

**Reported bugs**

- Keeps shutting down during scan
- Scanner does not work
- Not working with 2022 subscription update
- Device won't work after getting a new phone
- Keeps asking to activate device, then pay again

**Requested features**

- Add payment with Apple Cash
- Install just a code scanner icon


## Frequently asked questions

### Is Diag free?

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

### Is ThinkDriver free?

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

### Which has better reviews, Diag or ThinkDriver?

ThinkDriver is rated higher. Diag averages 3.1 out of 5 from 14 ratings, while ThinkDriver averages 4.5 from 270 ratings.

### Do Diag or ThinkDriver have ads?

Neither Diag nor ThinkDriver shows ads.

### Which is updated more often, Diag or ThinkDriver?

Diag ships an update every 2 months, and ThinkDriver monthly. Most recently, Diag was updated on August 18, 2026 and ThinkDriver on September 19, 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.*