Ratings & Reviews performance provides an overview of what users think of your app. Here are the key metrics to help you identify how your app is rated by users and how successful is your review management strategy.
4.0M Tools is world's first App which can read, charge your Mifare Classic and Ultralight card directly. Also it's the world's first mifare card charger which can work on NFC, PN53X and ACR122U. With M Tools, you can even compare and explore the rules of datas. The keys and data rules should be known first. Available functions: 1. Read and write to sector directly. 2. Auto save keys if they changed 3. Compare data, highlight display. 4. Emulate calculate. 5. Multi-card & multi-rules. 6. Crc8 & Crc16 calculation support.
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![M Keys [ACR122U] - Mifare Keys Generator & Manager](https://play-lh.googleusercontent.com/vxSp7hpDuElPxpkuwiI-rDS2U0RGRSpZAn8PwnXyN_6A6CxO1O8B7NxwwD2ETRR4iyOO=s180-rw)