FIXXE

KARPINITY

About this app

FIXXE is a fast, clean currency converter with live mid-market exchange rates — the neutral midpoint between global buy and sell prices, not bank spreads.

WHY FIXXE IS DIFFERENT

• Three rate sources with automatic fallback — ExchangeRate-API, F.A. and Frankfurter (ECB), plus eight mirrors. If a provider is down, the app quietly switches to the next one and shows which source the numbers came from. Most converters depend on a single API and simply show nothing when it fails.

• Works offline — the last rates are kept on your device, so the app keeps converting with no connection. And if those rates are more than a day old, it says so plainly instead of pretending they are current.

• Smart rounding — your chosen precision is a minimum, not a straitjacket: if rounding would distort the amount by more than 2%, extra decimals are added automatically. 0.94 CHF never becomes "1", and small crypto amounts never collapse to zero.

• Dynamic base — rates are recalculated against the currency you are editing, not a fixed one. No switching back and forth.

• No ads. No accounts. No tracking. The only permission is internet access; your list, order and settings never leave your device.

CURRENCIES

• 300+ currencies with country flags
• Regional currencies that converters often skip: Russian ruble, Serbian dinar, Georgian lari, Tajikistani somoni, Kyrgyz som
• Crypto — Bitcoin, Ethereum and 150+ more — and precious metals

EVERYDAY DETAILS

• Type in any field and every other currency updates instantly
• Drag rows by the handle to reorder them, remove one with a single tap
• Source-aware search: filter currencies by provider, see where each one is available, switch source in one tap
• Precision: whole numbers, 1, 2 or 4 decimals
• 40 languages, English by default, with an option to follow your device language — right-to-left layouts included
• Phone, tablet and web: the same app on iPhone, iPad, Android and as a web app you can install to the home screen

Displayed rates are mid-market reference values, not real-time trading quotes.
Rates By Exchange Rate API.

What’s new

The "add currency" list now offers every currency from all three rate providers at once — 335 instead of only the ones the active source happens to return. Each entry still shows where it is available, and picking one switches the source for you.

The app also gives up faster on a provider that is not responding, so a dead source costs seconds rather than tens of seconds before the next one is tried.