# EZdiag vs ThinkDiag+

The clearest difference is review sentiment: ThinkDiag+ at 74% against EZdiag's 8%. ThinkDiag+ also leads on rating (4.5 vs 1.6) and ratings volume (4.4K vs 42). EZdiag's advantage is iOS requirement (8.0 vs 13.0). 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.

ThinkDiag+ holds the better App Store score, 4.5 against 1.6. That said, the two scores are not equally well evidenced: ThinkDiag+ has 4.4K ratings behind it against 42, so its average is the more settled of the two. Written reviews point the same way: 8% of EZdiag's written reviews are positive against 74% of ThinkDiag+'s.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on November 2, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | EZdiag | ThinkDiag+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.6 (42 ratings)](https://appshunter.io/ios/app/ezdiag/id1038281404/reviews) | **[4.5 (4.4K ratings)](https://appshunter.io/ios/app/thinkdiag-plus/id1483420979/reviews)** |
| Number of ratings | 42 | **4.4K** |
| Positive reviews | 8.1% of reviews | **73.8% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | Monthly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 17 MB | 543 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Launch Tech Co., Ltd](https://appshunter.io/developer/447568418) | [THINKCAR INC](https://appshunter.io/developer/1464847379) |

## What reviewers say

### EZdiag

[App page](https://appshunter.io/ios/app/ezdiag/id1038281404)

This diagnostic tool connects to your smartphone to perform full-system vehicle diagnostics. It offers bi-directional capabilities for quick and easy troubleshooting, with optional manufacturer-specific software available for purchase.

**Highlights:** Smartphone-based OBDII diagnostics, Full-system diagnostics, Bi-directional capabilities, Manufacturer-specific software options, Portable and powerful device

**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 EZdiag free?

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

### Is ThinkDiag+ free?

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

### Which has better reviews, EZdiag or ThinkDiag+?

ThinkDiag+ is rated higher. EZdiag averages 1.6 out of 5 from 42 ratings, while ThinkDiag+ averages 4.5 from 4.4K ratings.

### Do EZdiag or ThinkDiag+ have ads?

Neither EZdiag nor ThinkDiag+ shows ads.

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

EZdiag ships an update monthly, and ThinkDiag+ monthly. Most recently, EZdiag was updated on November 2, 2026 and ThinkDiag+ on November 10, 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.*