Plutus is a currency converter built around one idea: checking a rate should take seconds and ask nothing of you. Where most converters list every currency against a base and leave you to scan for the one you need, Plutus shows only the pairs you choose, up to five, side by side. Either side of a pair updates the other instantly, and a tap opens a year of history you can drag through week by week. It covers 50 currencies, works offline, and fully supports VoiceOver and Dynamic Type.
Taken from idea to App Store as a solo build, Plutus is an exercise in restraint: no ads, no accounts, no data collected. Rates come from Frankfurter, a free public API that publishes central banks' official reference rates. That keeps the data transparent and the app independent of any commercial provider, and the date of every rate is always on screen.
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