# IPU Authenticator vs AuthBook Authenticator 2FA

IPU Authenticator and AuthBook Authenticator 2FA are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

IPU Authenticator ships an update fortnightly, AuthBook Authenticator 2FA every 10 days. The most recent releases landed on November 5, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | IPU Authenticator | AuthBook Authenticator 2FA |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 10 days** |
| Size | 53 MB | 37 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 12+ |
| Developer | [International Payment Union, UAB](https://appshunter.io/developer/1482122333) | [Pooja Gupta](https://appshunter.io/developer/461751776) |

## What reviewers say

### IPU Authenticator

[App page](https://appshunter.io/ios/app/ipu-authenticator/id6785332997)

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

**In-app purchases:** none


### AuthBook Authenticator 2FA

[App page](https://appshunter.io/ios/app/authbook-authenticator-2fa/id6823912796)

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

**In-app purchases:** none


## Frequently asked questions

### Is IPU Authenticator free?

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

### Is AuthBook Authenticator 2FA free?

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

### Do IPU Authenticator or AuthBook Authenticator 2FA have ads?

Neither IPU Authenticator nor AuthBook Authenticator 2FA shows ads.

### Which is updated more often, IPU Authenticator or AuthBook Authenticator 2FA?

IPU Authenticator ships an update fortnightly, and AuthBook Authenticator 2FA every 10 days. Most recently, IPU Authenticator was updated on November 5, 2026 and AuthBook Authenticator 2FA on November 6, 2026.

---

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