Comparison

Currency Professional vs SmartKey

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
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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

SmartKey

Features
Read full description

SmartKey is providing you with full control over multiple types of locks. With its user-friendly interface and advanced features, this app offers unparalleled convenience and security. You can effortlessly manage your locks through Bluetooth control, allowing you to easily lock and unlock them with just a few taps on your phone. Whether it's a door lock, hotel room, or any other compatible lock, this app puts the power in your hands. Additionally, app offers remote control functionality, enabling you to access and control your locks from anywhere in the world. This feature is particularly useful when you need to grant temporary access to someone or monitor the status of your locks while you're away. The app also provides comprehensive management capabilities, allowing you to organize and customize your lock settings with ease. You can add and remove users, set access permissions, track lock activities for any suspicious or unauthorized access attempts. It is the ultimate companion for anyone seeking a secure and convenient way to manage their access system. Experience the freedom and control that this app brings to your fingertips.

Screenshots

Currency Professional4 screens
SmartKey4 screens

Verdict

The call

The clearest difference is in-app purchases: SmartKey at none against Currency Professional's 1. SmartKey also leads on iOS requirement (18.6 vs 26.0). On price, update cadence, 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. SmartKey asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 5 months. Both last shipped on November 7, 2026.

Scorecard2 real differences · 4 level
Currency Professional versus SmartKey: the parameters behind the verdict, then further details
ParameterCurrency ProfessionalSmartKey
PriceFreeFree
Update frequencyEvery 5 monthsEvery 5 months
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhone, iPadiPhone, iPad
Requires iOS26.018.6 — better
Further details — not scored
Size21 MB22 MB
Age rating4+4+
DeveloperGerhard LentschikSmartKey s.r.o.

In-app purchases

1 purchases

Currency Professional

One-time1
  • Remove Advertising$1.99
None

SmartKey

No in-app purchases

Questions

Is Currency Professional free?
Currency Professional is free to download, with in-app purchases available.
Is SmartKey free?
SmartKey is free to download, with no in-app purchases.
Do Currency Professional or SmartKey have ads?
Neither Currency Professional nor SmartKey shows ads.
Which is updated more often, Currency Professional or SmartKey?
Currency Professional ships an update every 5 months, and SmartKey every 5 months. Most recently, Currency Professional was updated on November 7, 2026 and SmartKey on November 7, 2026.

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