# Open Authenticator by Skyost vs Portable Interview

The clearest difference is in-app purchases: Portable Interview at none against Open Authenticator by Skyost's 2. Open Authenticator by Skyost's advantage is device support (4 vs 2) and iOS requirement (15.0 vs 26.0). On price, update cadence and ads 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. Portable Interview asks for nothing beyond the download.

Open Authenticator by Skyost ships an update fortnightly, Portable Interview every 8 days. Both last shipped on November 4, 2026.

## The numbers

| Metric | Open Authenticator by Skyost | Portable Interview |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (12 ratings)](https://appshunter.io/ios/app/open-authenticator-by-skyost/id6479272927/reviews)** | — |
| Number of ratings | **12** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 8 days** |
| Monetization | Free with in-app purchases | — |
| Size | 56 MB | 42 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hugo Delaunay](https://appshunter.io/developer/1456648264) | [Sectiva AS](https://appshunter.io/developer/1777408791) |

## 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 |


### Portable Interview

[App page](https://appshunter.io/ios/app/portable-interview/id6737690870)

**In-app purchases:** none


## Frequently asked questions

### Is Open Authenticator by Skyost free?

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

### Is Portable Interview free?

Portable Interview is free to download, with no in-app purchases.

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

Neither Open Authenticator by Skyost nor Portable Interview shows ads.

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

Open Authenticator by Skyost ships an update fortnightly, and Portable Interview every 8 days. Most recently, Open Authenticator by Skyost was updated on November 4, 2026 and Portable Interview on November 4, 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.*