# ThinkDriver vs iSmartDiag

The clearest difference is rating: ThinkDriver at 4.5 against iSmartDiag's 1.0. ThinkDriver also leads on review sentiment (58% vs 25%) and ratings volume (282 vs 2). iSmartDiag's advantage is monetization model (free vs paid) and update cadence (every 4 days vs monthly). On price, ads, in-app purchases and device support 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 1.0. That said, the two scores are not equally well evidenced: ThinkDriver has 282 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 58% of ThinkDriver's written reviews are positive against 25% of iSmartDiag's.

ThinkDriver ships an update monthly, iSmartDiag every 4 days. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | ThinkDriver | iSmartDiag |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (282 ratings)](https://appshunter.io/ios/app/thinkdriver/id1502233364/reviews)** | [1.0 (2 ratings)](https://appshunter.io/ios/app/ismartdiag/id1669179670/reviews) |
| Number of ratings | **282** | 2 |
| Positive reviews | **57.6% of reviews** | 25.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 4 days** |
| Monetization | Paid | **Free** |
| Size | 325 MB | 614 MB |
| Requires iOS | **9.0** | 15.5 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 9+ |
| Developer | [THINKCAR INC](https://appshunter.io/developer/1464847379) | [Shenzhen Vident Technology Co., Ltd](https://appshunter.io/developer/1661505875) |

## What reviewers say

### 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


### iSmartDiag

[App page](https://appshunter.io/ios/app/ismartdiag/id1669179670)

This app provides powerful automotive diagnostic functions for mechanics, drivers, and DIYers. It connects via Bluetooth to scan over 110 vehicle brands, read/erase fault codes, and perform active tests. Save time and costs with detailed reports and maintenance functions.

**Highlights:** 110+ vehicle brands coverage, Full system scan & diagnosis, Bi-directional control, Read/erase fault codes, Maintenance functions, Data stream graph display, Bluetooth connectivity

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

**In-app purchases:** none


## Frequently asked questions

### Is ThinkDriver free?

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

### Is iSmartDiag free?

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

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

ThinkDriver is rated higher. ThinkDriver averages 4.5 out of 5 from 282 ratings, while iSmartDiag averages 1.0 from 2 ratings.

### Do ThinkDriver or iSmartDiag have ads?

Neither ThinkDriver nor iSmartDiag shows ads.

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

ThinkDriver ships an update monthly, and iSmartDiag every 4 days. Most recently, ThinkDriver was updated on October 24, 2026 and iSmartDiag on October 27, 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.*