# OTP Authenticator vs GCP Login

The clearest difference is update cadence: OTP Authenticator at every 5 months against GCP Login's every 19 months. OTP Authenticator also leads on iOS requirement (7.0 vs 13.0). 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.

OTP Authenticator ships an update every 5 months, GCP Login every 19 months. The most recent releases landed on September 20, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | OTP Authenticator | GCP Login |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 19 months |
| Size | 16 MB | 5 MB |
| Requires iOS | **7.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Swiss SafeLab GmbH](https://appshunter.io/developer/915359213) | [Polkomtel Sp. z o.o.](https://appshunter.io/developer/918480491) |

## What reviewers say

### OTP Authenticator

[App page](https://appshunter.io/ios/app/otp-authenticator/id915359210)

**Features:** macOS Compatibility

**In-app purchases:** none


### GCP Login

[App page](https://appshunter.io/ios/app/gcp-login/id1535804559)

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

**In-app purchases:** none


## Frequently asked questions

### Is OTP Authenticator free?

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

### Is GCP Login free?

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

### Do OTP Authenticator or GCP Login have ads?

Neither OTP Authenticator nor GCP Login shows ads.

### Which is updated more often, OTP Authenticator or GCP Login?

OTP Authenticator ships an update every 5 months, and GCP Login every 19 months. Most recently, OTP Authenticator was updated on September 20, 2026 and GCP Login on October 16, 2026.

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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.*