sMOTP is a simple strong authentication solution for iOS. The solution is based on time synchronous one time passwords. It consists of a client component and a server component(available on http://motp.sourceforge.net).
Features:
1.Supports 4 digit PIN
2.Supports reload PIN by face id / touch id(if saved)
3.Support copy-to-clipboard
4.Secure your MOTP Secret and PIN by face id after saved.
5.Secure your PIN if app move to background (30s for timeout)
6.Support iPad and iPhone
You can set pause or generates a one-time password every 10 seconds