Calculator — a real calculator on your wrist with a currency converter based on European Central Bank rates Calculator turns the watch face into a keypad: the keys sit in a ring around the edge, and the calculation is written down in the middle, on a paper tape you can scroll back through. WHAT IT DOES • Everyday arithmetic — + − × ÷ with proper operator precedence, percentages and powers. • Scientific functions — square root, ln, log, 1/x, sine, cosine, tangent and their inverses. • Constants at hand — π, e, φ, g and the speed of light. • Currency conversion — exchange rates are downloaded from the internet via frankfurter.dev. • Paper tape — every step stays on the screen, so you can check what you typed instead of trusting the result. YOUR HISTORY IS KEPT The tape survives closing the app, and you can save it under a name. Saved calculations can be viewed, loaded back onto the tape or deleted. The glance card shows how many you have saved. MADE FOR THE WATCH Tap the keys or drive the ring with the buttons — whichever suits the moment. In the settings you choose degrees or radians, two decimal places for money, the thousands separator, the start-up screen and the strength of the vibration. WORKS ANYWHERE Everything stays on the watch: no phone, no account, no internet. Translated into 25 languages, and it follows your watch's language automatically. Simple, fast and made for a small round screen.

1.2 Based on a suggestion by Sahba: - Currency conversion: a fourth set of keys converts money between your base currency and ten other currencies of your choice. Tap the base currency to change it; hold a finger on any other currency to swap it for a different one (or use Settings-Currencies). The arrows key converts the other way round, into your base currency. - Exchange rates are the European Central Bank reference rates. The watch downloads them through your phone and keeps them, so conversion works offline as well; the date of the rate is shown on the tape. This is why the app now asks for permission to access the internet. - Rate chart: Settings-Currencies-Rate chart shows how the exchange rate of any currency against your base currency changed over the last month. 1.1 - New watches: the Fenix 9 series is now supported: Fenix 9 (43 mm, 47 mm), Fenix 9 Pro (43 mm, 47 mm, 51 mm) and Fenix 9 Pro Solar (47 mm, 51 mm). - Version on screen: the settings screen now ends with a "Version" line showing which version of the app you are running.