# Mobile OTP Authenticator vs TimeKey

The clearest difference is in-app purchases: Mobile OTP Authenticator at none against TimeKey's 2. Mobile OTP Authenticator also leads on ads (none vs shown). TimeKey's advantage is update cadence (every 6 weeks vs every 8 months) and rating (3.7 vs 3.5). On price, ratings volume, device support and iOS requirement there is nothing between them.

Both are free to download. TimeKey sells 2 in-app purchases, starting at $1.49 per month. Mobile OTP Authenticator asks for nothing beyond the download.

TimeKey holds the better App Store score, 3.7 against 3.5. Both are backed by a comparable volume of ratings — 2 and 3 respectively.

Mobile OTP Authenticator ships an update every 8 months, TimeKey every 6 weeks. The most recent releases landed on June 9, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Mobile OTP Authenticator | TimeKey |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (2 ratings)](https://appshunter.io/ios/app/mobile-otp-authenticator/id1451459963/reviews) | **[3.7 (3 ratings)](https://appshunter.io/ios/app/timekey/id1506129753/reviews)** |
| Number of ratings | 2 | **3** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 8 months | **Every 6 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 2 MB | 55 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Albert Parti](https://appshunter.io/developer/534966701) | [Naoki Chiba](https://appshunter.io/developer/1506129752) |

## What reviewers say

### Mobile OTP Authenticator

[App page](https://appshunter.io/ios/app/mobile-otp-authenticator/id1451459963)

Securely manage your two-factor authentication codes. Easily add accounts by scanning QR codes or manual entry. Protect your online accounts with industry-standard HOTP and TOTP algorithms.

**Highlights:** QR code scanning for account setup, Manual account entry, Secure data storage in iOS Keychain, Supports HOTP and TOTP algorithms, Works with popular services like Google, Facebook, Amazon

**In-app purchases:** none


### TimeKey

[App page](https://appshunter.io/ios/app/timekey/id1506129753)

This app generates secure Time-based One-Time Passwords (TOTP) for two-factor authentication, protecting your online accounts. It offers local data storage, biometric security, and an intuitive interface for easy account management and quick code access. No internet connection is needed for code generation.

**Highlights:** Generate secure TOTP codes, Import accounts via QR code or manual entry, Organize accounts with categories and favorites, Biometric authentication (Face ID/Touch ID), Passcode protection, Dark mode support, Export QR codes for backup

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium 1 month | $1.49 | per month |
| Premium 1 year | $13.49 | per year |


## Frequently asked questions

### Is Mobile OTP Authenticator free?

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

### Is TimeKey free?

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

### Which has better reviews, Mobile OTP Authenticator or TimeKey?

TimeKey is rated higher. Mobile OTP Authenticator averages 3.5 out of 5 from 2 ratings, while TimeKey averages 3.7 from 3 ratings.

### Do Mobile OTP Authenticator or TimeKey have ads?

TimeKey shows ads; Mobile OTP Authenticator does not.

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

Mobile OTP Authenticator ships an update every 8 months, and TimeKey every 6 weeks. Most recently, Mobile OTP Authenticator was updated on June 9, 2026 and TimeKey on September 15, 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.*