# Open Authenticator by Skyost — An open-source TOTP manager

> Open-source TOTP manager for enhanced two-factor authentication security. (iPhone/iPad app by Hugo Delaunay.)

- Source: https://appshunter.io/ios/app/open-authenticator-by-skyost/id6479272927 (this page in markdown: same URL + `.md`)
- Developer: [Hugo Delaunay](https://appshunter.io/developer/1456648264)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Rating: 4.44/5 from 9 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 56 MB
- Languages: English, French, German, Italian, Portuguese
- Released: 2024-07-09
- Data updated: 2026-08-10
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/open-authenticator-by-skyost/id6479272927/reviews.md

## What is Open Authenticator by Skyost?

PROTECT YOUR ONLINE ACCOUNTS WITH OPEN AUTHENTICATOR
Open Authenticator generates Time-Based One-Time Passwords (TOTPs), which serve as the second factor in the 2FA process. These temporary codes are valid for a short period of time and are used alongside your password to verify your identity when logging into your accounts. This significantly enhances the security of your online accounts and protects them from unauthorized access.

KEY FEATURES
- Open-Source & Free to use : Our commitment to transparency and security means our app is open-source and will always remain free for local use. If it doesn't cost anything for us, then it shouldn't cost anything for you !
- Cross-Platform Compatibility : Seamlessly sync your TOTP tokens across all your devices, whether you're using iOS, macOS or another platform.
- Self-Hostable Backend : You can host the backend on your own server. Your data, your choice.
- A lovely crafted app : Open Authenticator has been designed to be fast and easy to use. Quickly find all your TOTPs and copy them directly from the main page !

IN SUMMARY, WHY OPEN AUTHENTICATOR ?
Here are the reasons why you should download Open Authenticator :
- Enhanced Security : Protect your online accounts from unauthorized access with strong 2FA.
- User-Friendly Interface : Intuitive design makes it easy to add, manage, and organize your TOTP tokens.
- Continuous Improvement : We're dedicated to delivering the best user experience and regularly update our app with new features and improvements.

LINKS
- Check it out on Github : https://github.com/openauthenticator-app/openauthenticator
- Visit our website : https://openauthenticator.app

LEGAL
- Privacy policy : https://openauthenticator.app/privacy-policy
- Terms of service : https://openauthenticator.app/terms-of-service

## Key features

- Generates Time-Based One-Time Passwords (TOTPs)
- Enhances online account security with 2FA
- Cross-platform token syncing
- Self-hostable backend option
- Fast and easy-to-use interface
- Open-source and free for local use

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Contributor Plan: Annual | $9.99 | per year |
| Contributor Plan: Monthly | $0.99 | per month |


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/open-authenticator-by-skyost/id6479272927/reviews.md

### 1/5 — Needs Better Documentation

*2026-03-18*

Very confusing to use

## Frequently asked questions about Open Authenticator by Skyost

### What is Open Authenticator?

Open Authenticator is an open-source application that generates Time-Based One-Time Passwords (TOTPs). These codes are used as a second factor in the two-factor authentication (2FA) process to significantly enhance the security of your online accounts.

### Is Open Authenticator free to use?

Yes, Open Authenticator is open-source and free for local use. The developers believe that if it doesn't cost them to provide, it shouldn't cost users either.

### Can I sync my TOTP tokens across devices with Open Authenticator?

Yes, Open Authenticator offers cross-platform compatibility, allowing you to seamlessly sync your TOTP tokens across all your devices, including iOS and macOS.

### Does Open Authenticator have a self-hostable backend?

Yes, Open Authenticator provides the option to self-host the backend on your own server, giving you full control over your data.

### How secure is Open Authenticator?

Open Authenticator enhances your online security by generating TOTPs for 2FA, protecting your accounts from unauthorized access. Its open-source nature also promotes transparency in its security practices.

### What platforms does Open Authenticator support?

Open Authenticator is supported on macOS, iPhone, iPad, and iPod, ensuring broad compatibility across Apple devices.

### What are the subscription plans for Open Authenticator?

Open Authenticator offers a 'Contributor Plan' with monthly and annual subscription options. The monthly plan costs $0.99, and the annual plan is $9.99.

### How often is Open Authenticator updated?

The app was last updated on May 1st, 2026, indicating a commitment to ongoing development and improvements. The latest version is v2.0.2.

## Version history (last 5 releases)

### v2.1.0 — 2026-06-30

• Optimized some network calls.
• Updated dependencies.
• Various bugs fixed.

### v2.0.2 — 2026-05-01

• Various bugs fixed.

### v1.4.2 — 2025-09-27

• Improved the TOTP add / edit page.
• Better handling of QR codes.
• Various other fixes and improvements.

### v1.4.0 — 2025-05-05

• Enhanced some design elements.
• Fixed various bugs.

### v1.3.1 — 2025-04-03

• Improved dialogs.
• Improved performances.
• Translated the app into more languages.
• Fixed various bugs.

## Apps similar to Open Authenticator by Skyost

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [FreeOTP Authenticator](https://appshunter.io/ios/app/freeotp-authenticator/id872559395) | 3.2 (173) | Free | Utilities |
| [Vivaldi Powerful Web Browser](https://appshunter.io/ios/app/vivaldi-powerful-web-browser/id1633234600) | 4.7 (4,166) | Free | Utilities |
| [Authenticator ·](https://appshunter.io/ios/app/authenticator/id1602061522) | 4.6 (26,199) | Free | Utilities |
| [Authenticator App · 2FA](https://appshunter.io/ios/app/authenticator-app-2fa/id6470149516) | 4.2 (376) | Free | Utilities |
| [Authenticator App \| 2FA Auth](https://appshunter.io/ios/app/authenticator-app-2fa-auth/id6612014885) | 3.8 (49) | Free | Utilities |
| [Ente Auth - 2FA Authenticator](https://appshunter.io/ios/app/ente-auth-2fa-authenticator/id6444121398) | 4.7 (282) | Free | Utilities |

## More apps by Hugo Delaunay

- [Bacomathiques](https://appshunter.io/ios/app/bacomathiques/id1458503418)
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- [Mobile Werewolf](https://appshunter.io/ios/app/mobile-werewolf/id1504559806)
- [Mathonaut](https://appshunter.io/ios/app/mathonaut/id1673790210)

All apps by Hugo Delaunay: https://appshunter.io/developer/1456648264

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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 2026-08-10.*