# Master Key vs MedicAir

The clearest difference is rating: MedicAir at 5.0 against Master Key's 3.0. On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

MedicAir holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

Master Key ships an update every 34 months, MedicAir every 21 months. The most recent releases landed on October 20, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Master Key | MedicAir |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/master-key/id1227460308/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/medicair/id1517599183/reviews)** |
| Number of ratings | **2** | 1 |
| Positive reviews | — | 60.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 34 months | **Every 21 months** |
| Monetization | Free | Free |
| Size | 42 MB | 172 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [EQ Club UK Ltd](https://appshunter.io/developer/1227460307) | [MedicAir DentAir Ltd](https://appshunter.io/developer/1812902589) |

## What reviewers say

### Master Key

[App page](https://appshunter.io/ios/app/master-key/id1227460308)

This app provides secure two-factor authentication using a time-based one-time password algorithm. It helps you maintain access to your online services, like email and social media, directly from your device.

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

**Features:** macOS Compatibility

**In-app purchases:** none


### MedicAir

[App page](https://appshunter.io/ios/app/medicair/id1517599183)

This app provides a medical-grade air purification solution for businesses. It effectively removes pollutants, bacteria, and viruses from indoor environments, ensuring cleaner air for staff and visitors.

**Highlights:** Medical-grade air purification, Removes pollutants, bacteria, and viruses, Over 5000 air inlets, 360º clean air dispersion, Reassures staff and customers

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Master Key free?

Master Key is free to download, with no in-app purchases.

### Is MedicAir free?

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

### Which has better reviews, Master Key or MedicAir?

MedicAir is rated higher. Master Key averages 3.0 out of 5 from 2 ratings, while MedicAir averages 5.0 from 1 ratings.

### Do Master Key or MedicAir have ads?

Neither Master Key nor MedicAir shows ads.

### Which is updated more often, Master Key or MedicAir?

Master Key ships an update every 34 months, and MedicAir every 21 months. Most recently, Master Key was updated on October 20, 2026 and MedicAir on October 24, 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.*