Aegis Authenticator (Android)
IntermediateAegis Authenticator (Android) is a solid Google Authenticator alternative. Your 2FA codes on Android, encrypted locally. No cloud, no account. Open source.
Information verified on July 22, 2026
Description
Aegis keeps your 2FA codes on your Android phone, encrypted, without ever sending them to the cloud. No account to create, no automatic sync: you decide when to export an encrypted backup. The app is open source, free, and highly regarded in the privacy community. The flip side: if you lose your phone without a backup, your codes are gone.
Key features
- 100% local (no cloud sync)
- Strong encryption
- Manual encrypted backup
- Open source
- Free
- Material Design interface
Strengths
- + Open source code, verifiable by anyone
- + Encrypted backup available
- + Highly regarded by the privacy community
Weaknesses
- − Android only
- − Slightly more technical interface
Recommended for
- Intermediate Android users
- People wanting local control over their 2FA codes
Aegis Authenticator (Android) vs Google Authenticator: the comparison
| Criterion | Aegis Authenticator (Android) | Google Authenticator |
|---|---|---|
| Price | Free. | Free |
| Targeted ads on your data | No | Yes (Google ad profile) |
| Source code | Open (auditable) | Proprietary |
| Migration difficulty | Easy (2/5) | — |
Comparison
Aegis is the most configurable on Android (encrypted backup, no cloud). 2FAS is simpler and cross-platform. Proton Authenticator integrates with the Proton suite.
This topic is chapter 11 of my book
It answers these questions, among others:
- which accounts do you start with, and at what pace, to stay the course?
- are physical keys worth it, and have your passwords already leaked?
- and why is this the one project everyone wrongly puts off?
Forthcoming 22/10/2026 from Éditions Eyrolles
Frequently asked questions
How much does Aegis Authenticator (Android) cost?
Free.
How do you switch from Google Authenticator to Aegis Authenticator (Android)?
Estimated difficulty: Easy (2/5). Manual code-by-code migration. Remember to export encrypted backup regularly. No sync, lose phone = lose codes.
Who is Aegis Authenticator (Android) for?
You want a secure, local 2FA authenticator on Android. An alternative to Google Authenticator.
One spark a week
Every week in The Spark, I break down one tech story through the privacy lens. And what you can do about it, concretely.
Join 400+ readers. Unsubscribe in one click. Your data will never be shared.