# Open Authenticator — Safe, publicly supervised

> Open-source, community-reviewed TOTP authenticator for secure one-time passwords. (iPhone/iPad app by Odroe Inc..)

- Source: https://appshunter.io/ios/app/open-authenticator/id1583588049 (this page in markdown: same URL + `.md`)
- Developer: [Odroe Inc.](https://appshunter.io/developer/1477720111)
- Category: Utilities, Productivity
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.1 · 24 MB
- Languages: English
- Released: 2021-09-02
- Data updated: 2026-06-04
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/open-authenticator/id1583588049/reviews.md

## What is Open Authenticator?

The HMAC-based One-time Password used by Open Authenticator for production is completely consistent with TOTP. The application code is completely open source, supervised by the community, and is an Authenticator with no backdoor security.

## Key features

- HMAC-based One-time Password generation
- TOTP compliance
- Completely open-source code
- Community supervised
- No backdoor security

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/open-authenticator/id1583588049/reviews.md

### 5/5 — Nice ☺️

*2021-09-26*

Open source! I like it!

## Frequently asked questions about Open Authenticator

### What is Open Authenticator?

Open Authenticator is a free, open-source application that generates HMAC-based One-time Passwords (TOTP) for secure authentication. Its code is publicly supervised by the community to ensure transparency and security.

### Is Open Authenticator secure?

Yes, Open Authenticator is designed for security with no backdoor access. Its open-source nature allows for community review, enhancing trust and reliability in its authentication processes.

### Does Open Authenticator have ads?

No, Open Authenticator is completely ad-free. As a free and open-source utility, it focuses on providing a seamless and uninterrupted user experience without advertisements.

### What devices support Open Authenticator?

Open Authenticator is available for iPhone and iPod devices. It is designed to run on iOS, providing secure authentication for Apple users.

### How often is Open Authenticator updated?

The latest version of Open Authenticator is 0.1, last updated on September 3, 2021. While updates may not be frequent, the core functionality is stable and community-reviewed.

### What is the age rating for Open Authenticator?

Open Authenticator has an age rating of 4+. This indicates it is suitable for users of all ages, with no content restrictions.

### What is the user sentiment for Open Authenticator?

Based on available data, Open Authenticator has a perfect rating of 5.0 stars from 1 rating, suggesting a highly positive initial user experience.

### Where can I find the source code for Open Authenticator?

The source code for Open Authenticator is completely open-source and supervised by the community. Details on accessing and reviewing the code are typically available through the developer's resources or community forums.

## Version history (last 1 release)

### 0.1 — 2021-09-03

No release notes.

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## More apps by Odroe Inc.

- [Agg Alpha](https://appshunter.io/ios/app/agg-alpha/id6752520374)

All apps by Odroe Inc.: https://appshunter.io/developer/1477720111

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-04.*