Rapid Rates

What's inside

Everything you need to convert

A fast, focused tool — no clutter, no subscriptions, no accounts.

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13 Live Currencies

PLN, EUR, USD, GBP, CHF, CZK, SEK, NOK, DKK, HUF, UAH, JPY, and CAD — updated daily via the European Central Bank.

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Quick Convert Buttons

Tap preset amounts to convert at a glance. Perfect for markets, travel, and everyday spending.

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Unit Converter

Temperature, speed, distance, length, weight, volume — all common travel units in one place.

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Fuel Price Converter

Combines volume and currency conversion so you can compare fuel prices across countries instantly.

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Home Screen Widgets

Small and medium widgets with configurable currencies and an optional flag background — your rates at a glance.

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Apple Watch App

Quick-amount buttons and full currency sync right on your wrist. Works independently when your iPhone isn't nearby.

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Works Offline

Rates are cached on-device so you can keep converting even without a connection.

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Private by Design

No ads, no analytics, no account required. Your data never leaves your device.

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Liquid Glass Design

A beautiful, modern interface that feels at home on iOS — smooth, elegant, and distraction-free.

Privacy

Your data stays yours

Rapid Rates does not collect any personal data. Exchange rates are fetched from the open-source Frankfurter API, which provides rates published by the European Central Bank. There are no analytics, no ads, and no tracking of any kind.

No ads No analytics No tracking No account required

Read the full Privacy Policy →

FAQ

Frequently asked questions

How often are exchange rates updated?

Rates are fetched from the Frankfurter API when you open the app. The API provides rates published by the European Central Bank, updated daily on working days.

Does the app work offline?

Yes. Rapid Rates caches the most recent exchange rates on your device, so you can convert currencies even without an internet connection.

How does the Apple Watch app sync with my iPhone?

Your currency preferences automatically sync from your iPhone to your Apple Watch. The Watch app can also fetch rates independently when your iPhone isn't nearby.

What currencies are supported?

Rapid Rates supports 13 currencies: PLN, EUR, USD, GBP, CHF, CZK, SEK, NOK, DKK, HUF, UAH, JPY, and CAD.

Is my data private?

Absolutely. Rapid Rates does not collect any personal data. No accounts, no analytics, no ads.

How do I configure the widget?

Long-press the widget on your Home Screen and tap "Edit Widget". You can choose to use your app settings or pick custom source and target currencies, and toggle the flag background.