# OTP Authenticator vs OTP

The clearest difference is in-app purchases: OTP Authenticator at none against OTP's 1. OTP Authenticator also leads on iOS requirement (7.0 vs 9.3). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. OTP sells 1 one-off in-app purchase. OTP Authenticator asks for nothing beyond the download.

OTP Authenticator ships an update every 5 months, OTP every 6 months. The most recent releases landed on September 20, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | OTP Authenticator | OTP |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.6 (18 ratings)](https://appshunter.io/ios/app/otp-auth/id1436497541/reviews)** |
| Number of ratings | — | **18** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 6 months |
| Monetization | — | Free with in-app purchases |
| Size | 16 MB | 27 MB |
| Requires iOS | **7.0** | 9.3 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Swiss SafeLab GmbH](https://appshunter.io/developer/915359213) | [浩 王](https://appshunter.io/developer/1055265396) |

## What reviewers say

### OTP Authenticator

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

**Features:** macOS Compatibility

**In-app purchases:** none


### OTP

[App page](https://appshunter.io/ios/app/otp-auth/id1436497541)

This app generates secure one-time passwords for two-factor authentication on your device. It supports various protocols, allows easy account setup via QR codes or manual entry, and offers robust security features like biometric locks and encrypted backups.

**Highlights:** TOTP & HOTP code generation, QR code scanning for setup, Biometric app lock (Face ID/Touch ID), Encrypted data export/import, Account grouping and organization, Dark Mode support, iCloud sync and backup

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OTPAuth Premium | $1.99 | one-time |


## Frequently asked questions

### Is OTP Authenticator free?

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

### Is OTP free?

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

### Do OTP Authenticator or OTP have ads?

Neither OTP Authenticator nor OTP shows ads.

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

OTP Authenticator ships an update every 5 months, and OTP every 6 months. Most recently, OTP Authenticator was updated on September 20, 2026 and OTP on September 29, 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.*