# Master Key

> Secure two-factor authentication app for online service access. (iPhone/iPad app by EQ Club UK Ltd.)

- Source: https://appshunter.io/ios/app/master-key/id1227460308 (this page in markdown: same URL + `.md`)
- Developer: [EQ Club UK Ltd](https://appshunter.io/developer/1227460307)
- Category: Utilities
- Price: Free
- Rating: 3.00/5 from 2 App Store ratings
- Age rating: 4+
- Requires: iOS 12.0 · 42 MB
- Languages: American English
- Released: 2017-05-11
- Data updated: 2026-06-01
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/master-key/id1227460308/reviews.md

## What is Master Key?

Master Key – secure and safe yet simple two-factor authentication app, which uses a time-based one-time password algorithm. Keep access to all your favourite online services, such as Gmail and Facebook, in your hands (and just your hands!) at all times.

## Key features

- Two-factor authentication
- Time-based one-time password algorithm
- Secure access to online services
- Simple and safe to use
- Mobile access to accounts


## Frequently asked questions about Master Key

### What is Master Key used for?

Master Key is a two-factor authentication app that uses a time-based one-time password algorithm to secure access to your online services like Gmail and Facebook.

### Is Master Key free to use?

Yes, Master Key is available for free. It does not have any in-app purchases or advertisements.

### What devices does Master Key support?

Master Key is supported on iPhone and iPod devices.

### How often is Master Key updated?

The latest version, 1.2, was released on November 28, 2022. The app was initially released on May 11, 2017.

### What is the age rating for Master Key?

Master Key has an age rating of 4+, making it suitable for a wide range of users.

### What is the user rating for Master Key?

Master Key has a rating of 3.0 stars based on 2 user ratings.

### Does Master Key have ads?

No, Master Key does not contain advertisements. It is a completely ad-free application.

## Version history (last 3 releases)

### 1.2 — 2022-11-28

Upgraded to support the latest versions of iOS.

### 1.1 — 2017-05-28

This app has been updated by Apple to display the Apple Watch app icon.

Added tutorial, ability to remove services, bug fixing

### 1.0 — 2017-05-06

No release notes.

## Apps similar to Master Key

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Mornin Key](https://appshunter.io/ios/app/mornin-key/id6448167378) | 5.0 (1) | $0.99 | Utilities |
| [T-Key](https://appshunter.io/ios/app/t-key/id1420460827) | 5.0 (1) | Free | Utilities |
| [MySecretMessage](https://appshunter.io/ios/app/mysecretmessage/id6445821645) | 3.0 (1) | Free | Utilities |

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-01.*