KeyDecoder is a business app developed by FrenchKey.
Download Statistics
KeyDecoder has been downloaded 45 thousand times. In the last 30 days, the app was downloaded 150 times.
User Ratings
KeyDecoder is rated 3.21 out of 5 stars. The rating is based on 120 ratings.
App Information
KeyDecoder is FREE to download. The APK download size is 41.62 MB. The latest version available is 1.1.0. The last update was on February 4, 2024.
Technical Requirements
KeyDecoder requires Android 5.0+ or higher. The app has a content rating of Everyone. The app has been available on Google Play December 2020.
Description
KeyDecoder app lets you use your smartphone or tablet to decode your mechanical keys in seconds.
Just place it on a ISO card (loyalty card, transportation ticket, Hotel room RFID card...), take a picture, and place your features on the picture. In less than one minute, you can decode your key.
This application is a true key decoder for standard keys, giving you a precision of 0.1mm or less depending on the quality of your pictures, the lighting, angle of view, and of course the precision of the ISO sized card you will use as a dimensional reference.
If you want to decode a key, this key decoding app is the best way, and it's free!
It is published under the Aladdin Free Public License, making it source-available, free to use, modify and distribute. You can find it on github for all details.
The main intended use of this app is for Pentesters doing Physical Intrusion tests with a legal contract. If you want to avoid unwanted duplication of your keys, you should give them the same attention as passwords (which they are in a way), do not share them, do not leave them unattended.
Source code is available on GitHub: https://github.com/MaximeBeasse/KeyDecoder
Recent changes: Migration to Android 13 and minor UI improvements.
Get a detailed PDF report for KeyDecoder with download trends, rating history,
and key performance statistics — useful for competitive research or tracking your own app.
Learn more
Are you the developer of this app? Join us for free to see more information about your app and learn how we can help you promote and earn money with your app.
Works great, if you know about locks. I have a good eye for decoding keys, so this isn't all that helpful to me. However, I see myself using this in the future for keys that aren't common. You do need to know what all those measurements mean, and if you aren't in the modern world, (ie if you are in North America) you will need to covert it to mil for any reference material to make sense. Otherwise, it has worked great for the test keys I have used. (would love to see in app conversations)
★★★★☆Omer RVU· Oct 17, 2021
Very cool! Can you maybe make a feature that creates an STL file for a 3d printer with the bitting of the key? Sometimes store doesn't have the required blanks for example
★☆☆☆☆L. S.· Jan 24, 2023
It doesn't work even with very simple key like Iseo F5
★☆☆☆☆justin herron· Feb 9, 2025
I'm a Locksmith Apprentice. I thought this app would be good to use for rare keys and for customers to send photos to save gas. Tested it on an old GM B10 key and used the app. I know the metric system and blade height on a B10 is close to 6.5 mm. With that said I went through the painstaking process of trying to decode the B10 key. The application is giving me wildly inaccurate bitting depths. It's measuring a 0 cut on the key over 12 mm. I wouldn't trust this for code cutting. Waste of time imo.
★★☆☆☆B. Hush· Jan 29, 2023
To cumbersome, takes far longer than using a key guage, not that accurate compared to a guage too... Nice concept but "not ready for prime time" Definitely not an app I would keep.
★☆☆☆☆Barry Starer (Bear)· Nov 28, 2022
Import pic is not working. Just returns a Grey screen with no options to do anything.
Google Play Rankings for KeyDecoder
This app is not ranked
Technologies used by KeyDecoder
KeyDecoder is requesting 3 permissions and is using 9 libraries.
Each subscription will automatically renew 3 days before the expiration date for
the same time period. Subscriptions can be cancelled at any time before the renewal.
Android Jetpack core
Flutter