# ThinkDiag+ vs LAUNCH i

The clearest difference is review sentiment: ThinkDiag+ at 74% against LAUNCH i's 0%. ThinkDiag+ also leads on rating (4.5 vs 1.0) and ratings volume (4.3K vs 1). LAUNCH i's advantage is monetization model (free vs free with in-app purchases) and update cadence (every 10 days vs every 3 weeks). 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.

ThinkDiag+ holds the better App Store score, 4.5 against 1.0. That said, the two scores are not equally well evidenced: ThinkDiag+ has 4.3K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 74% of ThinkDiag+'s written reviews are positive against 0% of LAUNCH i's.

ThinkDiag+ ships an update every 3 weeks, LAUNCH i every 10 days. The most recent releases landed on October 1, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | ThinkDiag+ | LAUNCH i |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (4.3K ratings)](https://appshunter.io/ios/app/thinkdiag-plus/id1483420979/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/launch-i-tpms/id6755132271/reviews) |
| Number of ratings | **4.3K** | 1 |
| Positive reviews | **73.9% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 10 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 539 MB | 45 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [THINKCAR INC](https://appshunter.io/developer/1464847379) | [Launch Tech Co., Ltd](https://appshunter.io/developer/447568418) |

## What reviewers say

### 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


### LAUNCH i

[App page](https://appshunter.io/ios/app/launch-i-tpms/id6755132271)

This utility app works with a specific tire pressure tool to activate, program, and copy sensor IDs. It supports 98% of market activation and programming, and provides guidance for tire pressure learning on most models. Users can also read tire pressure and temperature data to resolve tire pressure issues.

**Highlights:** Activate tire pressure sensors, Program tire pressure sensors, Copy sensor IDs, Supports 98% of market activation/programming, Tire pressure learning guidance, Read tire pressure and temperature data

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ThinkDiag+ free?

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

### Is LAUNCH i free?

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

### Which has better reviews, ThinkDiag+ or LAUNCH i?

ThinkDiag+ is rated higher. ThinkDiag+ averages 4.5 out of 5 from 4.3K ratings, while LAUNCH i averages 1.0 from 1 ratings.

### Do ThinkDiag+ or LAUNCH i have ads?

Neither ThinkDiag+ nor LAUNCH i shows ads.

### Which is updated more often, ThinkDiag+ or LAUNCH i?

ThinkDiag+ ships an update every 3 weeks, and LAUNCH i every 10 days. Most recently, ThinkDiag+ was updated on October 1, 2026 and LAUNCH i on September 29, 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.*