# iCar vs ThinkDiag+

The clearest difference is review sentiment: ThinkDiag+ at 74% against iCar's 25%. ThinkDiag+ also leads on update cadence (every 3 weeks vs every 2 months). iCar's advantage is monetization model (free vs free with in-app purchases). 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.

iCar ships an update every 2 months, ThinkDiag+ every 3 weeks. The most recent releases landed on June 1, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | iCar | ThinkDiag+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (4.3K ratings)](https://appshunter.io/ios/app/thinkdiag-plus/id1483420979/reviews)** |
| Number of ratings | — | **4.3K** |
| Positive reviews | 25.0% of reviews | **73.6% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 32 MB | 539 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [TRACEEZ TECHNOLOGY INTERNATIONAL CO., LTD.](https://appshunter.io/developer/854874275) | [THINKCAR INC](https://appshunter.io/developer/1464847379) |

## What reviewers say

### iCar

[App page](https://appshunter.io/ios/app/icar/id1050152844)

This app uses GPS tracking to monitor vehicle locations in real-time, offering historical data and security alerts. It allows users to manage multiple vehicles, set up geo-fences, and receive notifications for emergencies and status changes.

**Highlights:** Real-time GPS tracking, Vehicle history data (up to 7 days), Multi-vehicle management, Geo-fencing alerts, Push notifications for alerts, Vehicle status monitoring

**Features:** macOS Compatibility

**In-app purchases:** none


### ThinkDiag+

[App page](https://appshunter.io/ios/app/thinkdiag-plus/id1483420979)

This app provides professional-level vehicle diagnostics, offering features like reading/clearing fault codes, data flow analysis, and special maintenance functions. It supports a wide range of car brands and allows users to subscribe to specific diagnostic software. Connects via Bluetooth to your smartphone for intelligent vehicle analysis.

**Highlights:** OE-level diagnostic functions, Full OBD II diagnosis, Special maintenance functions, Supports 100+ vehicle brands, Automatic VIN reading, Professional diagnostic reports, In-app user community

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Easy to use
- 🚀 Powerful diagnostic capabilities
- 🚀 Affordable price
- 🚀 Helpful customer support
- 🚀 Versatile for DIY and professionals

**What reviewers complain about**

- 🐛 Occasional crashes or freezes
- 🐛 Compatibility issues with certain vehicles
- 🔒 Concerns about annual subscription fees
- 🔒 Limited functionality on iOS devices

**Reported bugs**

- Failure to recognize VIN or vehicle information
- Inability to clear certain error codes
- Inconsistent performance across different devices

**Requested features**

- Improved user interface and navigation
- More detailed troubleshooting guides
- Expanded vehicle coverage and special functions
- Offline mode for diagnostics


## Frequently asked questions

### Is iCar free?

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

### Is ThinkDiag+ free?

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

### Do iCar or ThinkDiag+ have ads?

Neither iCar nor ThinkDiag+ shows ads.

### Which is updated more often, iCar or ThinkDiag+?

iCar ships an update every 2 months, and ThinkDiag+ every 3 weeks. Most recently, iCar was updated on June 1, 2026 and ThinkDiag+ on September 25, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*