# Passwordless4U vs ZeroTrustBioAuth

The clearest difference is update cadence: ZeroTrustBioAuth at every 2 months against Passwordless4U's every 9 months. Passwordless4U's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 17.3). On price, ads and in-app purchases there is nothing between them.

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

Passwordless4U ships an update every 9 months, ZeroTrustBioAuth every 2 months. The most recent releases landed on September 16, 2026 and December 21, 2025 respectively.

## The numbers

| Metric | Passwordless4U | ZeroTrustBioAuth |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 2 months** |
| Size | 20 MB | 2 MB |
| Requires iOS | **12.0** | 17.3 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [vikram sareen](https://appshunter.io/developer/554668749) | [COLLABORATIONSTUDIOS.COM, LLC](https://appshunter.io/developer/1539011938) |

## What reviewers say

### Passwordless4U

[App page](https://appshunter.io/ios/app/passwordless4u/id1587344101)

**Features:** macOS Compatibility

**In-app purchases:** none


### ZeroTrustBioAuth

[App page](https://appshunter.io/ios/app/zerotrustbioauth/id6587581224)

**In-app purchases:** none


## Frequently asked questions

### Is Passwordless4U free?

Passwordless4U is free to download, with no in-app purchases.

### Is ZeroTrustBioAuth free?

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

### Do Passwordless4U or ZeroTrustBioAuth have ads?

Neither Passwordless4U nor ZeroTrustBioAuth shows ads.

### Which is updated more often, Passwordless4U or ZeroTrustBioAuth?

Passwordless4U ships an update every 9 months, and ZeroTrustBioAuth every 2 months. Most recently, Passwordless4U was updated on September 16, 2026 and ZeroTrustBioAuth on December 21, 2025.

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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.*