Android
NFC tag reading and writing on Android with NFC.cool Tools, plus the NFC.cool Business Card app - the same brand you already know from iPhone.
NFC Alarm Clock for iPhone and Android: Scan Your Tags to Stop the Alarm
Late nights of coding kept losing to my snooze button, so I built NFC Alarm into NFC.cool Tools: an alarm for iPhone and Android that only goes quiet once you've walked a trail of NFC tags around your home. Here's how it works, and how I got around the Stop button Apple puts on every alarm.
Read, Collect, and Back Up Amiibo on iPhone and Android
I want NFC.cool to be the best NFC app on iPhone and Android, so I gave it full Amiibo support: scan a figure to see its details, build a personal collection, and back one up to a blank NTAG215. Here's how Amiibo actually work under the hood - and why the app ships no keys.
NFC.cool is now on the Play Store
NFC.cool Tools is live on Google Play. NFC scanning and tag writing - now on Android, with the same feature set as the iOS app for the parts that share Android-compatible hardware.