Master Key vs IR QR Scanner
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Master Key
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.
- Two-factor authentication
- Time-based one-time password algorithm
- Secure access to online services
- Simple and safe to use
- Mobile access to accounts
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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.
IR QR Scanner
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With this interactive app you scan the QR codes on the aftermarket parts to associate them with services to keep your compressor running at its optimal performance. Once the easy to follow steps have been completed the app will give you your estimated date for the compressors next service and save all your details to the cloud based systems. Please note: You can only use the QR codes in the service kits with a compressors that’s already registered for warranty. • Scan the compressor QR code (usually located near the starter panel) • Enter the running hours • Scan the QR codes in the service kits • Select the oil used • Add any remarks for the service • Check the summary and submit the data and the service is complete.
Screenshots
Verdict
The clearest difference is update cadence: IR QR Scanner at every 5 months against Master Key's every 34 months. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Master Key ships an update every 34 months, IR QR Scanner every 5 months. The most recent releases landed on October 3, 2026 and September 17, 2026 respectively.
| Parameter | Master Key | IR QR Scanner |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 34 months | Every 5 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 42 MB | 44 MB |
| Age rating | 4+ | 4+ |
| Developer | EQ Club UK Ltd | Ingersoll Rand |
In-app purchases
Master Key
No in-app purchases
IR QR Scanner
No in-app purchases
