Shift Unit vs WindGroove
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!
WindGroove
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1,Remote Control via App: Independently control your speaker, fan, main light, and ambient lights from your smartphone. · 2,One-Tap On/Off: Easily turn all devices on or off at once, managing speakers, fans, and lighting functions in a unified way. · 3,Custom Scenes: Create and save personalized usage scenes in the app, and quickly recall your favorite combinations of functions. · 4,Timed Automation: Schedule multiple device actions to trigger automatically for a seamless, automated experience. · 5,Device Sharing: Share control with family members so everyone can manage the devices together. · 6,Automatic State Memory: The app remembers the last-used state of each function, reducing the need for repeated adjustments.
Screenshots
Verdict
Shift Unit and WindGroove are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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.
Shift Unit ships an update every 2 months, WindGroove every 5 weeks. The most recent releases landed on September 6, 2026 and September 18, 2026 respectively.
| Parameter | Shift Unit | WindGroove |
|---|---|---|
| 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 | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, Apple Watch | iPhone, iPad |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 20 MB | 216 MB |
| Age rating | 4+ | 4+ |
| Developer | Didier Burton | WINDGROOVE INC |
In-app purchases
Shift Unit
No in-app purchases
WindGroove
No in-app purchases









