The best 2FA app for the iPhone depends on your backup approach. If you want open standards and open-source code, 2FAS or Ente Auth is the right choice; if you have Google or Microsoft accounts, the relevant maker's…
The best 2FA app for the iPhone depends on your backup approach. If you want open standards and open-source code, 2FAS or Ente Auth is the right choice; if you have Google or Microsoft accounts, the relevant maker's authenticator is often the natural grab. Every TOTP app does the core job reliably; the difference shows up when you change devices or restore data.
As of March 2026, Ente Auth has continued to grow, while the Raivo app is best treated with caution after its ownership change.
Two-factor authentication is now essential, but which app fits your setup? Bitwarden, Proton Pass and 1Password already include a full 2FA manager, so anyone already using those password managers does not need a separate app. Anyone looking for a free option, using a different password manager, or deliberately keeping 2FA separate will find the best authenticator apps here, from open-source end-to-end encrypted options to the mainstream Google and Microsoft choices. It is aimed at iPhone users securing accounts with two-factor authentication who do not already have a 2FA manager built into their password manager.
Our verdict
Two-factor authentication is the simplest, most effective step for account security, and every authenticator app on this list does the job reliably. The decisive difference is the backup approach: anyone changing or losing a device needs a secure export path. Ente Auth and 2FAS offer the most modern open-source solutions here, with encrypted cloud backup.
An open-source authenticator that generates time-based one-time passwords for every service that supports 2FA, from Google and GitHub to your bank, and keeps no data on external servers. Free and community funded. It is the strongest all-rounder here, with solid cloud backup via Google Drive and iCloud, iCloud backup and a browser extension. The main weakness is that the interface feels a little cluttered next to leaner alternatives.
A slim, open-source 2FA app that syncs codes across your Apple devices through iCloud, with a minimalist design. Free. It suits anyone who values open-source software and good Apple integration, but after the 2023 ownership change it feels less trustworthy than before, and it has no Android version.
An open-source 2FA authenticator with an end-to-end encrypted cloud backup and the option to use all TOTP codes fully offline without an account. Free; Ente is funded by its paid Ente Photos subscription. With an externally audited system it is one of the best backup options available, although it still has relatively few ratings and no Apple Watch support.
A long-established TOTP manager from a German independent developer, with reliable iCloud sync used for years and a biometric lock. Freemium: the base version is free, while extended iCloud sync and backup features unlock through a one-time in-app purchase. It is not open source, but it is stable and well established.
A clean, no-frills authenticator in the Apple design language, syncing TOTP codes via iCloud between iPhone, iPad and Mac with no external account or cloud service. Free and ad-free from an independent developer. It offers few extras, but it delivers them consistently, and it suits anyone who wants Apple-native simplicity.
A simple, tidy authenticator with a home-screen widget and iCloud sync across multiple Apple devices. Freemium, with extended features via in-app purchase. It works and the widget is handy, but the base scope is limited and its rating sits below the average for this list.
Google's simple code generator, free and ad-free, with quick, uncomplicated setup and Google account sync that backs up codes across devices. A widely used app with no learning curve, but the backup is not end-to-end encrypted, Google's privacy terms apply, and there is no separate biometric app lock.
A 2FA app centred on the Microsoft ecosystem, with passwordless push sign-in for Microsoft accounts and a cloud backup of your codes. Free and funded by Microsoft. It is handy for consolidating 2FA for common services in one app, but outside the Microsoft ecosystem it offers little extra and it is feature-heavy for a simple purpose.
An enterprise 2FA app from Duo Security, with quick push confirmation instead of typing codes. Free for private use and funded by enterprise licences. It makes sense if your employer uses Duo and you need to sign in; for personal use there is little reason to prefer it, and it is not an open-source option.
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