Comparison

Currency Professional vs Shift Unit

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

Head to head
About

Currency Professional

Features
Read full description

Currency Professional is your reliable companion for travel, finance, and international shopping. The app provides real‑time exchange rates, clear country information including flags, and an intuitive calculator that lets you convert or further process amounts instantly. The app is deliberately designed to be clean, fast, offline‑capable, and optimized for both iPhone and iPad. Features at a Glance • Live Exchange Rates Automatic updates via the FCSAPI interface Precise rate data for over 80 currencies Visible timestamp of the latest update • Intuitive Currency Calculator Full calculator functionality (plus, minus, multiply, divide) Decimal input with comma Instant conversion into all stored currencies Automatic saving of the last entered amount • Countries & Flags Each currency with country, national flag, and full name Clear list of all available currencies Quick selection with a single tap • Favorites & Personalization Automatic saving of your preferred currencies Individual sorting via drag & drop (long‑press) Optimized layout for iPhone and iPad • Offline Mode Previously loaded rates remain available App continues to work even without internet • User‑Friendly Design Clear structure, large buttons — ideal for on the go Dynamic font sizes depending on screen width Modern layout with rounded elements Perfect for Travel & vacations Online shopping abroad Financial planning International business trips Forex enthusiasts Why this app? Because it simply works: fast, clear, without unnecessary clutter — yet with everything you need for precise currency conversions.

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!

Screenshots

Currency Professional4 screens
Shift Unit4 screens

Verdict

The call

The clearest difference is in-app purchases: Shift Unit at none against Currency Professional's 1. Shift Unit also leads on update cadence (every 2 months vs every 5 months) and iOS requirement (16.0 vs 26.0). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Currency Professional sells 1 one-off in-app purchase. Shift Unit asks for nothing beyond the download.

UpkeepUpdate frequency

Currency Professional ships an update every 5 months, Shift Unit every 2 months. The most recent releases landed on September 8, 2026 and September 6, 2026 respectively.

Scorecard3 real differences · 7 level
Currency Professional versus Shift Unit: the parameters behind the verdict, then further details
ParameterCurrency ProfessionalShift Unit
PriceFreeFree
Rating—5.0 (21 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—21 — better
Update frequencyEvery 5 monthsEvery 2 months — better
AdsNoNo
In-app purchasesYesNo — better
Monetization—Free
DevicesiPhone, iPadiPhone, Apple Watch
Requires iOS26.016.0 — better
Further details — not scored
Size21 MB20 MB
Age rating4+4+
DeveloperGerhard LentschikDidier Burton

In-app purchases

1 purchases

Currency Professional

One-time1
  • Remove Advertising$1.99
None

Shift Unit

No in-app purchases

Questions

Is Currency Professional free?
Currency Professional is free to download, with in-app purchases available.
Is Shift Unit free?
Shift Unit is free to download, with no in-app purchases.
Do Currency Professional or Shift Unit have ads?
Neither Currency Professional nor Shift Unit shows ads.
Which is updated more often, Currency Professional or Shift Unit?
Currency Professional ships an update every 5 months, and Shift Unit every 2 months. Most recently, Currency Professional was updated on September 8, 2026 and Shift Unit on September 6, 2026.

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