# Advancer AD20 vs VDIAGTOOL

The clearest difference is rating: VDIAGTOOL at 2.8 against Advancer AD20's 2.4. VDIAGTOOL also leads on review sentiment (40% vs 14%). Advancer AD20's advantage is ratings volume (64 vs 8) and iOS requirement (12.0 vs 15.6). 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.

VDIAGTOOL holds the better App Store score, 2.8 against 2.4. That said, the two scores are not equally well evidenced: Advancer AD20 has 64 ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 14% of Advancer AD20's written reviews are positive against 40% of VDIAGTOOL's.

Advancer AD20 ships an update monthly, VDIAGTOOL every 3 weeks. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Advancer AD20 | VDIAGTOOL |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.4 (64 ratings)](https://appshunter.io/ios/app/advancer-ad20/id6444664990/reviews) | **[2.8 (8 ratings)](https://appshunter.io/ios/app/vdiagtool/id6751025207/reviews)** |
| Number of ratings | **64** | 8 |
| Positive reviews | 13.9% of reviews | **40.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 496 MB | 1.1 GB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [深圳市云伽未来智能技术有限公司](https://appshunter.io/developer/1638728786) | [Shenzhen VDIAGTOOL Technology Co., Ltd](https://appshunter.io/developer/1833169281) |

## What reviewers say

### Advancer AD20

[App page](https://appshunter.io/ios/app/advancer-ad20/id6444664990)

This app connects to a smart OBD dongle to provide vehicle health checks, diagnosis, and real-time monitoring. It helps identify fault codes, analyze driving habits, and offers maintenance reminders for enhanced driving safety.

**Highlights:** OBD-II Diagnosis, In-depth system check, Live vehicle data monitoring, Maintenance light reset, Trip recorder, Driving habits analysis

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Easy installation and pairing
- 👍 Straightforward iPad pairing
- 👍 Full diagnostic capabilities
- 👍 Satisfied with results
- 👍 Works as expected for some users

**What reviewers complain about**

- 🐛 Cannot connect to device
- 🐛 Scanner tied to another account
- 🐛 Required account creation
- 🐛 Invalid email for account creation
- 🐛 Does not connect to specific car models

**Reported bugs**

- Cannot connect to scanner
- Scanner tied to another account
- Account creation issues (invalid email)
- Device stops working after registration
- Login timeouts

**Requested features**

- Add more languages, including Chinese
- Improve information availability for various car models
- Fix issues with iOS updates
- Improve app layout and navigation
- Increase text size and contrast


### VDIAGTOOL

[App page](https://appshunter.io/ios/app/vdiagtool/id6751025207)

This app provides comprehensive vehicle diagnostics, acting as a portable, professional solution. It connects to a Bluetooth OBDII adapter for full-system scanning and special functions on various car brands.

**Highlights:** Full-system vehicle diagnostics, Professional special functions (oil reset, DPF regen, EPB), High-speed Bluetooth OBDII adapter included, Portable, pocket-sized design, Cross-platform iOS compatibility

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

**In-app purchases:** none


## Frequently asked questions

### Is Advancer AD20 free?

Advancer AD20 is free to download, with no in-app purchases.

### Is VDIAGTOOL free?

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

### Which has better reviews, Advancer AD20 or VDIAGTOOL?

VDIAGTOOL is rated higher. Advancer AD20 averages 2.4 out of 5 from 64 ratings, while VDIAGTOOL averages 2.8 from 8 ratings.

### Do Advancer AD20 or VDIAGTOOL have ads?

Neither Advancer AD20 nor VDIAGTOOL shows ads.

### Which is updated more often, Advancer AD20 or VDIAGTOOL?

Advancer AD20 ships an update monthly, and VDIAGTOOL every 3 weeks. Most recently, Advancer AD20 was updated on October 23, 2026 and VDIAGTOOL on October 24, 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.*