https://play.google.com/store/apps/details?id=com.songsfam.android.floatingmemos&hl=zh_TW
https://play.google.com/store/apps/details?id=genius.mohammad.floating.stickies&hl=zh_TW
https://play.google.com/store/apps/details?id=org.artsplanet.android.simplememo&hl=zh_TW