Shift Unit vs QR Master
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Shift Unit
This utility app offers precise unit and currency conversions with over 1400 units across 34 categories. It supports light/dark modes, home widgets, and an independent Apple Watch app. Features include a custom keypad with calculator mode and educational Wikipedia integration.
- 1400+ conversion units
- 34 categories
- Light/dark mode support
- Home widget
- Apple Watch app
- Custom keypad with calculator
- Wikipedia integration
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Shift Unit is a unit converter designed with usability and numerical precision in mind. It features 1400+ conversion units across 34 categories. It works great in light or dark mode, and as a Home Widget w/ localized number displays. Independent WatchOS app and complications. Operations can be carried out in portrait mode in simple precision (7 significant digits,) or in landscape mode in double precision (14 significant digits.) Conversion formulae use exact definitions of related entities--not approximations. Wikipedia page information can be pulled for categories and conversion units. (Look for info circle.) The custom keypad has a calculator mode, and allows to enter/edit numbers on either side of the conversion. Unit categories include Acceleration, Angle, Area, Bit Rate, Clock, Online Currencies, Data Storage, Area Density, Volumetric Density, Electric Charge, Electric Current, Energy, Volumetric Flow Rate, Force, Frequency, Fuel, Length, Luminance, Lux, Mass Flow Rate, Momentum, Power, Pressure, Radiation Dose, Radioactivity, Radiation Exposure, Speed, Temperature, Temperature Delta, Time, Torque, Typography, Volume, and Weight. Features: - One screen operation minimizing number of gestures - Numbers (digits, decimal/grouping separators, exponent)/time/country names localized to your (or any) region - Current time in 2 out of 439 world cities and see your cities pinned on a flyover map, an educational way of discovering the world through time zones - Weather conditions and forecast for time zone cities - Dedicated accessibility labels and hints for VoiceOver operations - Customizable number entry timeout allowing to enter a new number without having to clear the field. (Turned off when an accessibility feature, e.g. VoiceOver, is on) - Customizable user interface (preferred categories; user interface alignment for left/right-handed entry or 2-thumb operations) - Ability to swap units while keeping initial numerical entry - Category presets for quick change of context, including user preset - Long-press category button to remove, or add a category on the fly - Long-press number field for copy/paste - Paste Mathematical constants (Pi, e, etc.) - Education via Wikipedia pages for categories and conversion units - Currency conversions using online rates - Searchable list of currency rates with possibility to change base rate - Set favorite currencies - Built-in numeric keypad (with calculator mode) to enter numbers on either side of the conversion - Long-press delete key to clear the field in focus - Engineering number format handling - Infinity and negative numbers handling - 7 or 14-digit precision displays (3-digit fractions for currencies) - Searchable list of 1400+ conversion units across 34 categories - On-boarding screens for general operations and for the Currency category (turned off when VoiceOver is on) - Home widget for quick conversions using units selected in the hosting app Happy Conversions!
QR Master
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QR Master revolutionizes the way you interact with QR codes! Whether you’re scanning for quick access or creating custom codes, this app combines simplicity with power to meet all your QR code needs. Key Features: Effortless QR Scanning: Instantly scan QR codes with high precision for websites, text, emails, and more. Custom QR Creation: Generate personalized QR codes for Wi-Fi, phone numbers, emails, and more in just a few taps. Ready-to-Use Templates: Save time with pre-designed templates for the most common QR code types. Limited Free Version: Start for free with a set number of scans and creations. Exclusive Premium Plans: Access advanced features, unlimited usage, and ad-free convenience with affordable plans. Premium Plans: Monthly Plan: Enjoy full features, no ads, and premium support for a low monthly fee. Lifetime Access: One-time payment unlocks all premium features forever. Who’s It For? For Professionals: Share business details, promotions, and product information with ease. For Educators: Enhance learning with QR-powered materials for students. For Everyday Users: Quickly share Wi-Fi, contact details, or links with friends and family. Why QR Master? Your privacy is our priority! QR Master ensures your data stays secure and never shares personal information without your consent. Need Help? We’re here for you! Contact our support team anytime at support@qrmaster.com. Terms of Use: https://meliharik.dev/qr_terms_and_conditions.html Privacy Policy: https://meliharik.dev/qr_privacy_policy.html
Screenshots
Verdict
The clearest difference is in-app purchases: Shift Unit at none against QR Master's 2. QR Master's advantage is iOS requirement (12.0 vs 16.0). On price, ads 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. QR Master sells 2 in-app purchases, starting at $9.99 per month. Shift Unit asks for nothing beyond the download.
| Parameter | Shift Unit | QR Master |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (21 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 21 — better | — |
| Update frequency | Every 2 months | — |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, Apple Watch | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 20 MB | 68 MB |
| Age rating | 4+ | 4+ |
| Developer | Didier Burton | Melih Arik |
In-app purchases
Shift Unit
No in-app purchases
QR Master
- Monthly Premium$9.991 Month
- Lifetime Premium$24.99









