2FA Code Fill Keyboard

A less app-switching way to fill 2FA codes for heavy iPhone users

Problem

After a code is generated, users still have to switch apps, find the account, copy, and switch back. AutoFill fails in many apps, and third-party keyboards can't detect the host app, so the last step often gets stuck.

Solution

Build an iOS third-party keyboard plus a main app where all 2FA entries are listed and filled with one tap. The app supports imports from Google Authenticator, Aegis, Bitwarden and others, with local AES encryption and optional iCloud sync.

Users

iPhone users, developers, and ops people who enter 2FA codes many times a day

MVP

iOS system AutoFill only; a dedicated keyboard for manual account selection and fill; import via Google Authenticator QR code; local encrypted storage with Face ID; TestFlight build for feedback

Revenue

Free basic version with a one-time unlock for iCloud sync and multi-device management, or a yearly subscription for sync

Why now

Third-party keyboards have been available for years, and 2FA is standard, yet code filling remains fragmented; an indie developer can focus on the iOS ecosystem and win on experience