The code you need, front and centre.
Butler shows one big code instead of a long list, with a countdown and the next code already waiting. Every other account is a tap away.


Two-factor codes. Nothing else.
A simple, private authenticator. Butler works completely offline, needs no account, and never collects a thing.
For Android. Butler 2, shown here, is on its way to Google Play.
Butler shows one big code instead of a long list, with a countdown and the next code already waiting. Every other account is a tap away.


When a code expires, Butler destroys it right in front of you, so you can see each one only ever works once.


Your secret plus the current time makes the six digits. No server takes part, so Butler never needs one.


A synced authenticator puts every key behind one account. Butler has no account, no analytics or ads, no servers, and no permission to use the internet at all.


A Proof screen shows what Butler is really doing: internet permission never requested, every secret encrypted, copied codes cleared after 30 seconds, and screenshots blocked.


Save an encrypted backup wherever you like. On any device, your six-word recovery phrase opens it. Nobody else can reset it, so nobody else can get in.


Unlock Butler with your fingerprint, face or phone PIN, so a borrowed phone doesn't mean borrowed codes.
Codes and secrets stay out of screenshots and the recent apps view, by default.
Copied codes are cleared after 30 seconds.
Codes come from your phone's clock, so Butler works on a plane, in a basement, anywhere.
Layouts made for phones, tablets, landscape and foldables.
Open it and add your first account. There's nothing to register.
Free on Google Play. Your accounts carry over to Butler 2.