If you're interested in reading and/or writing to RFID tags and have a compatible NFC device, you'll be able to use the MIFARE Classic Tool app.

You don't have to buy the app, you can get it for free.

The app is completely free to download and use. You can also get it for free if you're a member of the MIFARE Classic Users group, which is free to join.

It is designed to be used in conjunction with the MIFARE Classic tag.

If you don't have a compatible NFC device, you can still use the app to interact with RFID tags that support the MIFARE Classic protocol.