# Authenticator App 2FA vs Idum Authenticator

The clearest difference is in-app purchases: Authenticator App 2FA at none against Idum Authenticator's 3. Authenticator App 2FA also leads on iOS requirement (16.0 vs 18.0). Idum Authenticator's advantage is ads (none vs shown) and update cadence (every 2 days vs every 2 weeks). On price and device support there is nothing between them.

Both are free to download. Idum Authenticator sells 3 in-app purchases, starting at $3.99 per 7 days. Authenticator App 2FA asks for nothing beyond the download.

Authenticator App 2FA ships an update every 2 weeks, Idum Authenticator every 2 days. The most recent releases landed on October 11, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Authenticator App 2FA | Idum Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Every 2 days** |
| Size | 22 MB | 9 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Luriven](https://appshunter.io/developer/6796618489) | [IDUM](https://appshunter.io/developer/6776361265) |

## What reviewers say

### Authenticator App 2FA

[App page](https://appshunter.io/ios/app/authenticator-app-2fa/id6796618487)

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

**In-app purchases:** none


### Idum Authenticator

[App page](https://appshunter.io/ios/app/idum-authenticator/id6801459486)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Idum Authenticator Pro Weekly | $3.99 | per 7 days |
| Idum Authenticator Pro Yearly | $29.99 | per year |
| Idum Authenticator Lifetime | $69.00 | one-time |


## Frequently asked questions

### Is Authenticator App 2FA free?

Authenticator App 2FA is free to download, with no in-app purchases.

### Is Idum Authenticator free?

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

### Do Authenticator App 2FA or Idum Authenticator have ads?

Authenticator App 2FA shows ads; Idum Authenticator does not.

### Which is updated more often, Authenticator App 2FA or Idum Authenticator?

Authenticator App 2FA ships an update every 2 weeks, and Idum Authenticator every 2 days. Most recently, Authenticator App 2FA was updated on October 11, 2026 and Idum Authenticator on September 30, 2026.

---

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