# OTP vs OTP Authenticator

The clearest difference is review sentiment: OTP Authenticator at 100% against OTP's 0%. OTP Authenticator also leads on in-app purchases (none vs 1) and update cadence (every 6 days vs every 6 months). OTP's advantage is iOS requirement (9.3 vs 14.0). On price, 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 ships an update every 6 months, OTP Authenticator every 6 days. The most recent releases landed on October 14, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | OTP | OTP Authenticator |
| --- | --- | --- |
| 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 | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 6 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 27 MB | 6 MB |
| Requires iOS | **9.3** | 14.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [浩 王](https://appshunter.io/developer/1055265396) | [凯 程](https://appshunter.io/developer/1232505614) |

## What reviewers say

### 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 |


### OTP Authenticator

[App page](https://appshunter.io/ios/app/otp-authenticator-totp/id1551264305)

This app provides a secure and visually appealing way to manage your TOTP (Time-based One-Time Password) codes. It offers a clean interface, customizable icons, and convenient desktop widgets, all while prioritizing offline security and minimal storage usage.

**Highlights:** Visually appealing design, Secure offline operation, Customizable icons, Desktop widgets, Minimal storage footprint, SwiftUI implementation

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

**In-app purchases:** none


## Frequently asked questions

### Is OTP free?

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

### Is OTP Authenticator free?

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

### Do OTP or OTP Authenticator have ads?

Neither OTP nor OTP Authenticator shows ads.

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

OTP ships an update every 6 months, and OTP Authenticator every 6 days. Most recently, OTP was updated on October 14, 2026 and OTP Authenticator on October 9, 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.*