Pricing
The essentials are free. Pro unlocks the full FX intelligence layer.
Free
$0
Check a rate, convert an amount, follow the majors. Free forever, no sign-up.
Converter + rate boards for the 30 major currencies
Daily ECB reference rates
Your base currency and your watchlist
Watchlist for up to 3 pairs
30-day charts and history for the 30 major currencies
CertusFX Pro
Buy a month or a year of Pro as a one-time pass.
Every currency, keyed exchange rates, and the full analytical toolkit.
Keyed rates and yields (ExchangeRate-API + FRED)
160 currencies, every pair
Bond-yield dashboard with FX context
AI trend outlooks, pair by pair
The one-year pass works out about 33% cheaper than covering a year with one-month passes.
How Free and Pro work
Free is the whole core app: a fast converter, boards for the major currencies from your own base, 30-day charts, and your personal watchlist. It runs on daily ECB reference rates — no account, no card, no trial clock.
Pro switches the converter and boards onto keyed rates — ExchangeRate-API for 160 currencies and every pair, with FRED and US Treasury data behind the bond-yield dashboard — and unlocks the analytical layer: AI trend outlooks, two-pair overlays, unlimited rate alerts and watchlists, and CSV export.
Pro is sold as a timed, one-time pass — a month or a year. A pass simply ends when its term is up, and buying another while one is active extends your remaining time. Passes are sold here on the web and in the mobile apps, and Free stays free.
Pro passes are bought here on the web or in the CertusFX app on Google Play or the App Store.
Open CertusFXRates are reference values for information only, not dealing quotes.
CertusFX — a NestCalc app