Rasmerk supports multiple currencies without requiring an internet connection.
When you add a transaction in a foreign currency, Rasmerk saves the exchange rate at that moment. This snapshot is stored with the transaction permanently.
Multi-currency is a Premium feature.
Old transactions always show the value at the time they were recorded. If USD/INR was 83.5 when you made a purchase, it will always show at 83.5 — even if the rate changes later.
Go to Settings → Currencies to view and edit exchange rates for any currency pair. This is useful for offline travel when you have no internet access.