Comparison

Diag vs VIN decoder & VIN code scanner

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Diag

This diagnostic software package works with the MaxiAP200 to provide diagnostic functions for China vehicles. It offers a comprehensive suite of tools for vehicle maintenance and troubleshooting.

Highlights
  • Vehicle diagnostics
  • China vehicle support
  • Requires MaxiAP200
  • Maintenance tools
  • Troubleshooting functions
Features
Read full description

Diagnostic software package for China vehicles, which requires to work with the main program MaxiAP200 together.

About

VIN decoder & VIN code scanner

Instantly decode any vehicle's VIN with this app. It offers both manual input and a VIN scanner for quick, accurate vehicle information, including auction history and average pricing.

Highlights
  • VIN code decoding
  • Real-time VIN scanner
  • VIN code recognition from text
  • Auction participation check
  • Average vehicle price estimation
  • VIN code validation
Features
Read full description

Our VIN Decoder & VIN Check app is the ultimate tool for checking a car's VIN code. Simply input the 17 digits of your VIN number, and our app will provide you with a wealth of information about the vehicle. To make the process even faster and more efficient, we have included a VIN scanner that can read the VIN code automatically, saving you the hassle of entering the information manually. VIN code recognition directly from text in real-time — swift, eliminating the need for picture-taking. Incredibly convenient in scenarios where a barcode is absent or obscured by pollution and other factors. For optimal functionality when using the VIN scanner, it is essential to ensure that the Vehicle Identification Number is clean and free from any contaminants. It is advisable to use a VIN recognizer in instances where the VIN code is polluted or corrupted. When utilizing the VIN recognizer, you should double-check a VIN to ensure its accuracy before proceeding with the decoding process. Enhanced VIN check - additional VIN code validation to ensure accurate entry. For those who are unfamiliar with what a VIN code is, it stands for Vehicle Identification Number, which is a unique identification code consisting of 17 symbols that are assigned to every car, bus, truck, or trailer at the time of production. Moreover, our app not only provides information about the car, but it can also tell you if the vehicle has participated in auctions and provide you with the average price of the vehicle if such data is available. With our VIN Decoder and VIN check app, you can have all the information you need about a vehicle right at your fingertips. To ensure the VIN check works correctly, make sure your network connection is active and stable. The VIN Decoder & VIN Check app is not responsible for the accuracy of the information it publishes, including technical data, features, specifications, and indicators. Manufacturers' logos, brands, and other trademarks are the property of their respective owners. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Diag4 screens
VIN decoder & VIN code scanner4 screens

Verdict

The call

The clearest difference is review sentiment: VIN decoder & VIN code scanner at 100% against Diag's 33%. VIN decoder & VIN code scanner also leads on ratings volume (112 vs 3) and update cadence (every 3 weeks vs every 2 months). Diag's advantage is in-app purchases (none vs 2) and ads (none vs shown). On price, device support and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. VIN decoder & VIN code scanner sells 2 in-app purchases, starting at $4.99 per month. Diag asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Diag holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: VIN decoder & VIN code scanner has 112 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 33% of Diag's written reviews are positive against 100% of VIN decoder & VIN code scanner's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Diag ships an update every 2 months, VIN decoder & VIN code scanner every 3 weeks. The most recent releases landed on September 22, 2026 and September 16, 2026 respectively.

Scorecard7 real differences · 3 level
Diag versus VIN decoder & VIN code scanner: the parameters behind the verdict, then further details
ParameterDiagVIN decoder & VIN code scanner
PriceFreeFree
Rating5.0 (3 ratings) — better4.7 (112 ratings)
Positive reviews33.3% of reviews100.0% of reviews — better
Number of ratings3112 — better
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS12.0 — better13.0
Further details — not scored
Size245 MB39 MB
Age rating4+4+
DeveloperAutel Intelligent Technology Co., Ltd.Vitaliy Mischenko

Customer experience

Diag

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive33.3%
Neutral0.0%
Negative66.7%

VIN decoder & VIN code scanner

All ratings112 ratings
Positive93.8%
Neutral0.9%
Negative5.4%
Written reviews6 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Diag

No in-app purchases

2 purchases

VIN decoder & VIN code scanner

Subscriptions2
  • Premium Access for a month$4.991 Month
  • Premium Access for a year$49.991 Year

Questions

Is Diag free?
Diag is free to download, with no in-app purchases.
Is VIN decoder & VIN code scanner free?
VIN decoder & VIN code scanner is free to download, with in-app purchases available.
Which has better reviews, Diag or VIN decoder & VIN code scanner?
Diag is rated higher. Diag averages 5.0 out of 5 from 3 ratings, while VIN decoder & VIN code scanner averages 4.7 from 112 ratings.
Do Diag or VIN decoder & VIN code scanner have ads?
VIN decoder & VIN code scanner shows ads; Diag does not.
Which is updated more often, Diag or VIN decoder & VIN code scanner?
Diag ships an update every 2 months, and VIN decoder & VIN code scanner every 3 weeks. Most recently, Diag was updated on September 22, 2026 and VIN decoder & VIN code scanner on September 16, 2026.

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