# Open Authenticator by Skyost vs Authenticator App－2FA・MFA・OTP

Open Authenticator by Skyost and Authenticator App－2FA・MFA・OTP both sit at 4.4 stars, but that hides the real split: 69% of Authenticator App－2FA・MFA・OTP's written reviews are positive against 0% of Open Authenticator by Skyost's. Authenticator App－2FA・MFA・OTP also leads on ratings volume (690 vs 9) and chart position (#132 vs unranked). Open Authenticator by Skyost's advantage is ads (none vs shown) and iOS requirement (15.0 vs 17.6). On price, rating, update cadence and in-app purchases there is nothing between them.

Both are free to download. Open Authenticator by Skyost sells 2 in-app purchases, starting at $0.99 per month and Authenticator App－2FA・MFA・OTP sells 8 in-app purchases, starting at $5.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Authenticator App－2FA・MFA・OTP holds the better App Store score, 4.6 against 4.4. That said, the two scores are not equally well evidenced: Authenticator App－2FA・MFA・OTP has 690 ratings behind it against 9, so its average is the more settled of the two. Written reviews point the same way: 0% of Open Authenticator by Skyost's written reviews are positive against 69% of Authenticator App－2FA・MFA・OTP's.

Open Authenticator by Skyost ships an update fortnightly, Authenticator App－2FA・MFA・OTP every 9 days. The most recent releases landed on October 14, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Open Authenticator by Skyost | Authenticator App－2FA・MFA・OTP |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (9 ratings)](https://appshunter.io/ios/app/open-authenticator-by-skyost/id6479272927/reviews) | **[4.6 (690 ratings)](https://appshunter.io/ios/app/authenticator-app2famfaotp/id6636543626/reviews)** |
| Number of ratings | 9 | **690** |
| Positive reviews | 0.0% of reviews | **68.9% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | **Every 9 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | — | **#132** |
| Size | 56 MB | 153 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Hugo Delaunay](https://appshunter.io/developer/1456648264) | [FLOOMIX LTD](https://appshunter.io/developer/1581569860) |

## What reviewers say

### Open Authenticator by Skyost

[App page](https://appshunter.io/ios/app/open-authenticator-by-skyost/id6479272927)

This app generates Time-Based One-Time Passwords (TOTPs) to enhance online account security through two-factor authentication. It offers cross-platform syncing, a self-hostable backend, and an intuitive interface for managing your security codes.

**Highlights:** 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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Contributor Plan: Monthly | $0.99 | per month |
| Contributor Plan: Annual | $9.99 | per year |


### Authenticator App－2FA・MFA・OTP

[App page](https://appshunter.io/ios/app/authenticator-app2famfaotp/id6636543626)

**Currently charting:** #132 Top Grossing · Utilities (US App Store)

Enhance your online security by generating time-based one-time passcodes for two-factor authentication. Securely manage multiple accounts with effortless setup, biometric integration, and cloud backups. Enjoy a sleek interface with cross-device syncing for ultimate convenience.

**Highlights:** Multiple account support, QR code scanning for setup, Face ID/Touch ID integration, Cloud backups via iCloud, Dark mode interface, Cross-device synchronization

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Access | $5.99 | per 7 days |
| Weekly Access | $9.99 | per 7 days |
| Weekly Access | $9.99 | per 7 days |
| Yearly Access | $49.99 | per year |
| Yearly Access | $59.99 | per year |
| Yearly Access | $59.99 | per year |
| Yearly Access | $69.99 | per year |
| Yearly Access | $69.99 | per year |


## Frequently asked questions

### Is Open Authenticator by Skyost free?

Open Authenticator by Skyost is free to download, with in-app purchases available.

### Is Authenticator App－2FA・MFA・OTP free?

Authenticator App－2FA・MFA・OTP is free to download, with in-app purchases available.

### Which has better reviews, Open Authenticator by Skyost or Authenticator App－2FA・MFA・OTP?

Authenticator App－2FA・MFA・OTP is rated higher. Open Authenticator by Skyost averages 4.4 out of 5 from 9 ratings, while Authenticator App－2FA・MFA・OTP averages 4.6 from 690 ratings.

### Do Open Authenticator by Skyost or Authenticator App－2FA・MFA・OTP have ads?

Authenticator App－2FA・MFA・OTP shows ads; Open Authenticator by Skyost does not.

### Which is updated more often, Open Authenticator by Skyost or Authenticator App－2FA・MFA・OTP?

Open Authenticator by Skyost ships an update fortnightly, and Authenticator App－2FA・MFA・OTP every 9 days. Most recently, Open Authenticator by Skyost was updated on October 14, 2026 and Authenticator App－2FA・MFA・OTP on October 19, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*