Comparison

Shift Unit vs Unit Converter

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 1400+ conversion units
  • 34 categories
  • Light/dark mode support
  • Home widget
  • Apple Watch app
  • Custom keypad with calculator
  • Wikipedia integration
Features
Read full description

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!

About

Unit Converter

Features
Read full description

Unit Converter Pro is the ultimate currency, crypto, and unit converter for iPhone and iPad. Get live exchange rates for 80+ world currencies and 100+ cryptocurrencies — plus convert units across 8 categories — all in one fast, beautiful app. CURRENCY CONVERTER (FX): • Live exchange rates for 80+ currencies — USD, EUR, GBP, JPY, CAD, AUD, CHF, CNY, INR, KRW, BRL, MXN, SEK, NOK, and many more • Multi-target conversion — compare multiple currencies at once • Drag-to-reorder your favorite currencies • Favorite currencies for quick access • Swap between source and target instantly • Pull-to-refresh for the latest rates • Offline mode with cached rates for travel CRYPTOCURRENCY CONVERTER: • 100+ cryptocurrencies with live rates from Binance • Bitcoin, Ethereum, Solana, XRP, Cardano, Dogecoin, BNB, and more • Convert crypto to crypto or crypto to fiat • Refreshes every 60 seconds while the Crypto tab is open • Multi-target conversion — track multiple conversions at once • Drag-to-reorder and favorites support • Pull-to-refresh for instant updates UNIT CONVERTER: Convert between 8 categories with hundreds of units: • Length — meters, feet, inches, miles, kilometers, yards, and more • Weight — kilograms, pounds, ounces, grams, tons, stones, and more • Temperature — Celsius, Fahrenheit, Kelvin • Speed — mph, km/h, m/s, knots, and more • Area — square meters, acres, hectares, square feet, and more • Volume — liters, gallons, fluid ounces, cups, and more • Time — seconds, minutes, hours, days, weeks, months, years • Data — bytes, KB, MB, GB, TB, PB KEY FEATURES: • Real-time calculations as you type • Custom keypad designed for fast input • Adaptive decimal formatting for precise results • Dark mode with automatic theme switching • Optimized for both iPhone and iPad • Home screen widgets for currency rates • No ads, no tracking, no data collection • Tip jar to support independent development Perfect for travelers, traders, students, engineers, and anyone who needs quick, reliable conversions. Privacy Policy: https://www.midego.net/convert-tool/privacy Terms of Service: https://www.midego.net/convert-tool/legal

Screenshots

Shift Unit4 screens
Unit Converter4 screens

Verdict

The call

The clearest difference is in-app purchases: Shift Unit at none against Unit Converter's 3. Unit Converter's advantage is update cadence (every 2 weeks vs every 2 months). On price, ads, device support and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Unit Converter sells 3 in-app purchases, starting at $0.99 per month. Shift Unit asks for nothing beyond the download.

UpkeepUpdate frequency

Shift Unit ships an update every 2 months, Unit Converter every 2 weeks. The most recent releases landed on October 8, 2026 and October 7, 2026 respectively.

Scorecard2 real differences · 8 level
Shift Unit versus Unit Converter: the parameters behind the verdict, then further details
ParameterShift UnitUnit Converter
PriceFreeFree
Rating5.0 (21 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings21 — better—
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, Apple WatchiPhone, iPad
Requires iOS16.0 — better17.0
Further details — not scored
Size20 MB3 MB
Age rating4+4+
DeveloperDidier BurtonMichiel de Gooijer

In-app purchases

None

Shift Unit

No in-app purchases

3 purchases

Unit Converter

Subscriptions2
  • Pro Monthly$0.991 Month
  • Pro Yearly$3.991 Year
One-time1
  • Small Tip$0.99

Questions

Is Shift Unit free?
Shift Unit is free to download, with no in-app purchases.
Is Unit Converter free?
Unit Converter is free to download, with in-app purchases available.
Do Shift Unit or Unit Converter have ads?
Neither Shift Unit nor Unit Converter shows ads.
Which is updated more often, Shift Unit or Unit Converter?
Shift Unit ships an update every 2 months, and Unit Converter every 2 weeks. Most recently, Shift Unit was updated on October 8, 2026 and Unit Converter on October 7, 2026.

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