Diag vs TabScan
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Diag
This diagnostic software package is designed for Volkswagen vehicles. It requires the MaxiAP200 main program to function and provides diagnostic capabilities for your car.
- Volkswagen vehicle diagnostics
- Requires MaxiAP200
- Diagnostic software package
- Vehicle system analysis
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Diagnostic software package for VW vehicles, which requires to work with the main program MaxiAP200 together.
TabScan
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TabScan is an application developed by Eucleia Technology company based on the original factory diagnostic technology. It is specifically designed to provide customize car settings and upgrading vehicle functions for Volkswagen, Audi, Porsche, Mercedes-Benz, BMW, and Ford vehicle models. Without requiring any professional technical knowledge, you can easily operate it on your smartphone to enjoy advanced features, enhancing your driving experience. Key Features: Supported vehicle brands for customize car settings include Volkswagen, Audi, Porsche, Mercedes-Benz, BMW, and Ford. More vehicle brands are currently under development, so stay tuned! Popular customization features include: Disabling memory start-stop Activating wireless CarPlay Adjusting turn signal blink frequency Activating sports instrument cluster Locking the vehicle without turning off the engine For more supported vehicle functions, please check the application. With TabScan, you can effortlessly customize car settings and upgrade your vehicle functions, enhancing your driving experience and enjoyment. TabScan allows you to personalize your car and enjoy a more enjoyable driving experience. Download and start using it now!
Screenshots
Verdict
The clearest difference is iOS requirement: TabScan at 11.0 against Diag's 13.0. On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Diag ships an update every 2 months, TabScan monthly. The most recent releases landed on November 4, 2026 and November 3, 2026 respectively.
| Parameter | Diag | TabScan |
|---|---|---|
| Price | Free | Free |
| Rating | 3.1 (14 ratings) — better | — |
| Positive reviews | 40.0% of reviews | — |
| Number of ratings | 14 — better | — |
| Update frequency | Every 2 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 13.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 337 MB | 87 MB |
| Age rating | 4+ | 17+ |
| Developer | Autel Intelligent Technology Co., Ltd. | OBD GO TECH CO LTD |
In-app purchases
Diag
No in-app purchases
TabScan
No in-app purchases









