# ThinkDiag+ vs Launch AIOBD

The clearest difference is review sentiment: ThinkDiag+ at 74% against Launch AIOBD's 0%. ThinkDiag+ also leads on rating (4.5 vs 2.3) and in-app purchases (none vs 19). On price, update cadence, ads and monetization model there is nothing between them.

Both are free to download. Launch AIOBD sells 19 one-off in-app purchases. ThinkDiag+ asks for nothing beyond the download.

ThinkDiag+ holds the better App Store score, 4.5 against 2.3. That said, the two scores are not equally well evidenced: ThinkDiag+ has 4.3K ratings behind it against 3, 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 AIOBD's.

Both ship on a similar rhythm, roughly every 3 weeks. Both last shipped on October 16, 2026.

## The numbers

| Metric | ThinkDiag+ | Launch AIOBD |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (4.3K ratings)](https://appshunter.io/ios/app/thinkdiag-plus/id1483420979/reviews)** | [2.3 (3 ratings)](https://appshunter.io/ios/app/launch-aiobd/id6739603189/reviews) |
| Number of ratings | **4.3K** | 3 |
| Positive reviews | **74.1% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 539 MB | 752 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 AIOBD

[App page](https://appshunter.io/ios/app/launch-aiobd/id6739603189)

This tool diagnoses vehicle faults using a mobile device and a Bluetooth connector. It performs full system diagnostics, reads and clears trouble codes, and analyzes data streams for various car models.

**Highlights:** Full system vehicle diagnosis, One-click intelligent diagnosis, Read and clear DTCs, Read data streams, Salt spray testing, Supports mainstream models

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

**In-app purchases (19)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FIAT | $0.29 | one-time |
| Software services(2.99) | $2.99 | one-time |
| Software services(3.99) | $3.99 | one-time |
| Software services(4.99) | $4.99 | one-time |
| Software services(8.99) | $8.99 | one-time |
| Software services(9.99) | $9.99 | one-time |
| Software services(29.99) | $29.99 | one-time |
| Software services(31.99) | $31.99 | one-time |
| MAZDA | $35.99 | one-time |
| BENZ | $35.99 | one-time |
| GM | $35.99 | one-time |
| HONDA | $35.99 | one-time |
| HYUNDAI | $35.99 | one-time |
| NISSAN | $35.99 | one-time |
| TOYOTA | $35.99 | one-time |
| USAFORD | $35.99 | one-time |
| VM | $35.99 | one-time |
| VOLVO | $35.99 | one-time |
| CHRYSLER | $35.99 | one-time |


## Frequently asked questions

### Is ThinkDiag+ free?

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

### Is Launch AIOBD free?

Launch AIOBD is free to download, with in-app purchases available.

### Which has better reviews, ThinkDiag+ or Launch AIOBD?

ThinkDiag+ is rated higher. ThinkDiag+ averages 4.5 out of 5 from 4.3K ratings, while Launch AIOBD averages 2.3 from 3 ratings.

### Do ThinkDiag+ or Launch AIOBD have ads?

Neither ThinkDiag+ nor Launch AIOBD shows ads.

### Which is updated more often, ThinkDiag+ or Launch AIOBD?

ThinkDiag+ ships an update every 3 weeks, and Launch AIOBD every 3 weeks. Most recently, ThinkDiag+ was updated on October 16, 2026 and Launch AIOBD on October 16, 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.*