# TOPDON CarPal vs GOOLOO OBD

The clearest difference is rating: TOPDON CarPal at 3.7 against GOOLOO OBD's 1.0. TOPDON CarPal also leads on update cadence (every 3 weeks vs every 3 months) and ratings volume (41 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. TOPDON CarPal sells 18 in-app purchases, starting at $4.99 per month and GOOLOO OBD sells 10 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

TOPDON CarPal holds the better App Store score, 3.7 against 1.0. That said, the two scores are not equally well evidenced: TOPDON CarPal has 41 ratings behind it against 1, so its average is the more settled of the two.

TOPDON CarPal ships an update every 3 weeks, GOOLOO OBD every 3 months. The most recent releases landed on September 25, 2026 and September 4, 2026 respectively.

## The numbers

| Metric | TOPDON CarPal | GOOLOO OBD |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (41 ratings)](https://appshunter.io/ios/app/topdon-carpal/id6478524922/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/gooloo-obd/id6747735228/reviews) |
| Number of ratings | **41** | 1 |
| Positive reviews | 39.3% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 1.6 GB | 1.6 GB |
| Requires iOS | 11 | 11.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [HK TOPDON TECHNOLOGY Co., LIMITED](https://appshunter.io/developer/1846276192) | [Changsha Angsi E-commerce Co., Ltd.](https://appshunter.io/developer/1797024413) |

## What reviewers say

### TOPDON CarPal

[App page](https://appshunter.io/ios/app/topdon-carpal/id6478524922)

Transform your phone into a powerful car diagnostic tool with this app. It offers comprehensive system scans, full OBDII functionality, and specialized maintenance services for a wide range of vehicle brands. Easily identify issues, access repair data, and generate detailed reports wirelessly.

**Highlights:** Full System Diagnosis, Full OBD2 Functions, 6 Special Maintenance Functions, AutoVIN Vehicle Identification, Wireless Bluetooth Connection, Diagnostic Report Generation

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

**In-app purchases (18)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Auto-renewal | $4.99 | per month |
| Renewal Bundle | $29.99 | per year |
| Nissan Gateway 1-Token | $11.99 | one-time |
| Renault Gateway  1-Token | $11.99 | one-time |
| VW SFD Gateway  1-Token | $11.99 | one-time |
| FCA Gateway  1-Token | $11.99 | one-time |
| FCA Gateway 30-day Access | $34.99 | one-time |
| VW SFD Gateway 30-day Access | $34.99 | one-time |
| Renault Gateway 5 Tokens | $116.99 | one-time |
| Nissan Gateway 5 Tokens (EU only) | $116.99 | one-time |
| Renault Gateway 5 Tokens | $147.99 | one-time |
| VW SFD Gateway 1-year Access | $199.99 | one-time |
| Renault Gateway 10 Tokens | $209.99 | one-time |
| Nissan Gateway 10 Tokens (EU only) | $209.99 | one-time |
| Nissan Gateway 10 Tokens (EU only) | $254.99 | one-time |
| Renault Gateway 20 Tokens | $379.00 | one-time |
| Nissan Gateway 20 Tokens (EU only) | $379.00 | one-time |
| Nissan Gateway 20 Tokens (EU only) | $464.99 | one-time |


### GOOLOO OBD

[App page](https://appshunter.io/ios/app/gooloo-obd/id6747735228)

This app transforms your phone into a powerful car diagnostic tool via Bluetooth. It offers comprehensive system checks, full OBD2 functions, and specialized maintenance services for a wide range of vehicle brands.

**Highlights:** Full System Diagnosis, Full OBD2 Functions, 6 Special Maintenance Functions, Repair Data Library, AutoVIN Vehicle Identification, Bluetooth 5.0 Wireless Connection, Diagnostic Report Generation

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Auto-renewal | $4.99 | per month |
| Annual Auto-renewal | $29.99 | per year |
| Renault Gateway 5 Tokens | $147.99 | one-time |
| Nissan Gateway 5 Tokens (EU only) | $147.99 | one-time |
| FCA Gateway 1-year Access (EU only) | $229.99 | one-time |
| VW SFD Gateway 1-year Access | $229.99 | one-time |
| Renault Gateway 10 Tokens | $254.99 | one-time |
| Nissan Gateway 10 Tokens (EU only) | $254.99 | one-time |
| Renault Gateway 20 Tokens | $464.99 | one-time |
| Nissan Gateway 20 Tokens (EU only) | $464.99 | one-time |


## Frequently asked questions

### Is TOPDON CarPal free?

TOPDON CarPal is free to download, with in-app purchases available.

### Is GOOLOO OBD free?

GOOLOO OBD is free to download, with in-app purchases available.

### Which has better reviews, TOPDON CarPal or GOOLOO OBD?

TOPDON CarPal is rated higher. TOPDON CarPal averages 3.7 out of 5 from 41 ratings, while GOOLOO OBD averages 1.0 from 1 ratings.

### Do TOPDON CarPal or GOOLOO OBD have ads?

Neither TOPDON CarPal nor GOOLOO OBD shows ads.

### Which is updated more often, TOPDON CarPal or GOOLOO OBD?

TOPDON CarPal ships an update every 3 weeks, and GOOLOO OBD every 3 months. Most recently, TOPDON CarPal was updated on September 25, 2026 and GOOLOO OBD on September 4, 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.*