Comparison

Kalkulator Walut vs NullRate FX Converter

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

Head to head
About

Kalkulator Walut

Features
Read full description

Currency Converter is a simple and reliable tool for tracking current exchange rates and precious metals. The app retrieves data directly from the official API of the National Bank of Poland. This ensures that you always rely on credible, up-to-date, and accurate financial information. Whether you are traveling abroad, shopping online in foreign currencies, or monitoring investments, our app makes daily calculations easy. You can set any currency as your base currency - you are not limited to the Polish Zloty (PLN). We designed this tool to be fast, clear, and free from unnecessary clutter. Main features of the app: Current rates: access to all currencies from NBP tables, plus gold and silver prices. Instant calculator: fast and precise amount conversion between your chosen currencies. Custom base currency: personalize the main converter view to fit your needs. Historical charts: track rate changes on clear, easy-to-read line charts. Favorite currencies: pin the most important currencies for quick, immediate access. Offline mode: check recently downloaded rates even without an active internet connection. For users who need advanced analytical tools, we offer a Pro version that unlocks the full potential of the app. Pro version features: Advanced analytics: track currency history on detailed charts up to a year back. Currency portfolio: input your foreign savings and track their total value in your chosen base currency. Currency comparison: compare up to 3 different currencies on a single chart to visually analyze trends. Portfolio notes: categorize and add personal descriptions to your stored funds. Table C rates: access to NBP buy and sell rates including the currency spread. Price alerts: set custom notifications to know exactly when a currency reaches your target rate. Travel calculator: easily estimate travel expenses for popular foreign destinations. No limits: save an unlimited number of favorite currencies and view extended search history. Extra security: lock and protect your application data using biometrics (FaceID / TouchID). Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

NullRate FX Converter

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NullRate is a fast currency converter made for travel, shopping, tipping, and everyday exchange-rate checks. Convert prices between 167+ currencies with daily FX rates, a clean keypad, and a home-screen widget that keeps your favorite currency pair one glance away. Whether you are buying coffee, checking a dinner bill, paying for a taxi, booking a hotel, or shopping abroad, NullRate helps you understand the real price instantly. Built for travelers, expats, digital nomads, and anyone who needs quick currency conversion without clutter. Why use NullRate? • Convert 167+ world currencies • Daily FX rates refreshed from a trusted provider • Fast calculator with a clean keypad • Home-screen widget for your favorite currency pair • Search currencies and countries in 45 languages • Supports native scripts like Arabic, Hindi, Japanese, Chinese, and more • Choose from 5 number formats, including 1,000.00, 1.000,00, 1 000,00, 1,00,000.00, and 1’000.00 • Light and dark mode designed for iPhone Use NullRate for: • Travel budgeting • Restaurant bills and tips • Taxi fares • Hotel prices • Shopping abroad • Comparing prices in your home currency • Quick exchange-rate checks before you pay NullRate is built to be quick, calm, and practical. No clutter. No confusing charts. Just a clean exchange-rate calculator for real life. Rates are indicative and refreshed daily. NullRate is not intended for trading or hedging. NullRate Pro is an auto-renewable subscription. 7-day free trial, then billed annually. Cancel anytime in your App Store account settings. Terms of Use: https://nullrateapp.com/en/terms Privacy Policy: https://nullrateapp.com/en/privacy

Screenshots

Kalkulator Walut4 screens
NullRate FX Converter4 screens

Verdict

The call

Kalkulator Walut and NullRate FX Converter are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Kalkulator Walut sells 3 in-app purchases, starting at $6.99 per month and NullRate FX Converter sells 1 in-app purchase, starting at $2.99 per year. Whichever you choose, the download price is not the number that matters.

ScorecardNo meaningful differences
Kalkulator Walut versus NullRate FX Converter: the parameters behind the verdict, then further details
ParameterKalkulator WalutNullRate FX Converter
PriceFreeFree
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPod
Requires iOS16.015.0 — better
Further details — not scored
Size67 MB38 MB
Age rating4+4+
DeveloperDawid Chaberfoxapex llc

In-app purchases

3 purchases

Kalkulator Walut

Subscriptions2
  • Monthly Premium$6.991 Month
  • Yearly Premium$24.991 Year
One-time1
  • Lifetime Premium$99.99
1 purchases

NullRate FX Converter

Subscriptions1
  • Unlock Nullrate7 Days trial$2.991 Year

Questions

Is Kalkulator Walut free?
Kalkulator Walut is free to download, with in-app purchases available.
Is NullRate FX Converter free?
NullRate FX Converter is free to download, with in-app purchases available.
Do Kalkulator Walut or NullRate FX Converter have ads?
Neither Kalkulator Walut nor NullRate FX Converter shows ads.

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