i-膠登SSD for iOS
https://itunes.apple.com/hk/app/i-jiao-deng-ssd/id676643151?mt=8

Gallica for Android
https://play.google.com/store/apps/details?id=com.commonsense.hkgalden

Gallica Plus for Android
https://play.google.com/store/apps/details?id=com.commonsense.hkgaldenPaid

Gannet for Android
https://play.google.com/store/apps/details?id=com.gannetwork.hkgalden