# OTAC auth vs Ourbit Authenticator

The clearest difference is update cadence: Ourbit Authenticator at every 2 weeks against OTAC auth's every 6 weeks. Ourbit Authenticator also leads on iOS requirement (12.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

OTAC auth ships an update every 6 weeks, Ourbit Authenticator every 2 weeks. The most recent releases landed on September 17, 2026 and May 16, 2026 respectively.

## The numbers

| Metric | OTAC auth | Ourbit Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 2 weeks** |
| Size | 10 MB | 30 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [swIDch Limited](https://appshunter.io/developer/1723421198) | [Ourbit Holdings Ltd](https://appshunter.io/developer/1740458012) |

## What reviewers say

### OTAC auth

[App page](https://appshunter.io/ios/app/otac-auth/id6475137518)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Ourbit Authenticator

[App page](https://appshunter.io/ios/app/ourbit-authenticator/id6502442942)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OTAC auth free?

OTAC auth is free to download, with no in-app purchases.

### Is Ourbit Authenticator free?

Ourbit Authenticator is free to download, with no in-app purchases.

### Do OTAC auth or Ourbit Authenticator have ads?

Neither OTAC auth nor Ourbit Authenticator shows ads.

### Which is updated more often, OTAC auth or Ourbit Authenticator?

OTAC auth ships an update every 6 weeks, and Ourbit Authenticator every 2 weeks. Most recently, OTAC auth was updated on September 17, 2026 and Ourbit Authenticator on May 16, 2026.

---

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