# Open Authenticator by Skyost vs Authenticator

The clearest difference is review sentiment: Authenticator at 75% against Open Authenticator by Skyost's 0%. Authenticator also leads on ratings volume (2.5K vs 9) and rating (4.7 vs 4.4). Open Authenticator by Skyost's advantage is ads (none vs shown) and device support (4 vs 2). On price, update cadence, in-app purchases and monetization model 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 sells 14 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Authenticator holds the better App Store score, 4.7 against 4.4. That said, the two scores are not equally well evidenced: Authenticator has 2.5K 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 75% of Authenticator's.

Open Authenticator by Skyost ships an update fortnightly, Authenticator every 4 weeks. Both last shipped on October 14, 2026.

## The numbers

| Metric | Open Authenticator by Skyost | Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (9 ratings)](https://appshunter.io/ios/app/open-authenticator-by-skyost/id6479272927/reviews) | **[4.7 (2.5K ratings)](https://appshunter.io/ios/app/authenticator-2fa-app/id6642706929/reviews)** |
| Number of ratings | 9 | **2.5K** |
| Positive reviews | 0.0% of reviews | **75.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Fortnightly** | Every 4 weeks |
| Monetization | Free with in-app purchases | Freemium |
| Size | 56 MB | 202 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Hugo Delaunay](https://appshunter.io/developer/1456648264) | [Vitalii Kuprenko](https://appshunter.io/developer/1763634127) |

## 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 page](https://appshunter.io/ios/app/authenticator-2fa-app/id6642706929)

Secure your online accounts with two-factor authentication (2FA). Easily generate and store one-time codes by scanning QR codes or entering details manually. Offers data breach monitoring and a basic password manager for free, with premium features available via subscription.

**Highlights:** Two-factor authentication (2FA) code generation, QR code scanning for setup, Broad service compatibility, Data breach monitoring, Basic password manager, Unlimited 2FA accounts (subscription), Unlimited password manager with autofill (subscription)

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

**In-app purchases (14)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly PRO Access | $3.99 | per 7 days |
| Monthly PRO Access | $4.99 | per month |
| Weekly PRO Access | $4.99 | per 7 days |
| Weekly PRO Access | $6.99 | per 7 days |
| Unlimited Access | $7.99 | per 7 days |
| Weekly PRO Access | $9.99 | per 7 days |
| Weekly PRO Access | $9.99 | per 7 days |
| Weekly PRO Access | $11.99 | per 7 days |
| Annual Pro Access | $29.99 | per year |
| Annual Unlimited Access | $39.99 | per year |
| Annual Pro Access | $59.99 | per year |
| Unlimited Access | $59.99 | per year |
| Forever Unlimited Access | $59.99 | one-time |
| Forever Unlimited Access | $69.99 | one-time |

**What reviewers like**

- 🚀 Quick setup
- 🔒 Secure authentication
- 👍 Intuitive and easy to use
- 👍 Works flawlessly

**What reviewers complain about**

- 🐛 Charges users despite cancellation
- 🐛 Incompatible with some services

**Reported bugs**

- Login screen freezes
- Incompatible with older devices
- Unable to access 2FA for some services

**Requested features**

- Dark mode option


## Frequently asked questions

### Is Open Authenticator by Skyost free?

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

### Is Authenticator free?

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

### Which has better reviews, Open Authenticator by Skyost or Authenticator?

Authenticator is rated higher. Open Authenticator by Skyost averages 4.4 out of 5 from 9 ratings, while Authenticator averages 4.7 from 2.5K ratings.

### Do Open Authenticator by Skyost or Authenticator have ads?

Authenticator shows ads; Open Authenticator by Skyost does not.

### Which is updated more often, Open Authenticator by Skyost or Authenticator?

Open Authenticator by Skyost ships an update fortnightly, and Authenticator every 4 weeks. Most recently, Open Authenticator by Skyost was updated on October 14, 2026 and Authenticator on October 14, 2026.

---

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