# Zero Password vs Authenticator

The clearest difference is in-app purchases: Zero Password at none against Authenticator's 2. Zero Password also leads on iOS requirement (16.6 vs 18.5). Authenticator's advantage is update cadence (weekly vs every 15 months). On price, ads and device support there is nothing between them.

Both are free to download. Authenticator sells 2 in-app purchases, starting at $9.99 per 7 days. Zero Password asks for nothing beyond the download.

Zero Password ships an update every 15 months, Authenticator weekly. The most recent releases landed on September 10, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | Zero Password | Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 15 months | **Weekly** |
| Size | 147 MB | 112 MB |
| Requires iOS | **16.6** | 18.5 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Li Wei](https://appshunter.io/developer/1794714380) | [BU Guard GmbH](https://appshunter.io/developer/1858539616) |

## What reviewers say

### Zero Password

[App page](https://appshunter.io/ios/app/zero-password/id6741751251)

**In-app purchases:** none


### Authenticator

[App page](https://appshunter.io/ios/app/authenticator-2fa-app/id6760155508)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Access | $9.99 | per 7 days |
| Premium Access Year | $44.99 | per year |


## Frequently asked questions

### Is Zero Password free?

Zero Password is free to download, with no in-app purchases.

### Is Authenticator free?

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

### Do Zero Password or Authenticator have ads?

Neither Zero Password nor Authenticator shows ads.

### Which is updated more often, Zero Password or Authenticator?

Zero Password ships an update every 15 months, and Authenticator weekly. Most recently, Zero Password was updated on September 10, 2026 and Authenticator on September 16, 2026.

---

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