Calculator vs Lumen

Now with a Unit Converter for length, weight, temperature and volume, controlled with the Digital Crown. A simple, clear calculator with large buttons that makes calculations easy on your Apple Watch. Whether it's a quick tip, everyday math, or scientific functions like sin, cos, and tan, this app has you covered—no phone needed. Ask Siri to calculate a sum or convert units without opening the app.

Lumen is a camera that doesn't hide its values. EV, ISO, shutter, focus and white balance are on screen as numbers, always — and one tap locks all of them. Recompose without your exposure drifting. ■ Precise colour — free Temperature in Kelvin and green↔magenta tint, together, on one two-axis pad. A precision the competition doesn't offer. In Lumen it's free. ■ It won't die at the decisive moment Survives incoming calls and thermal throttling. Shoots from the volume button. Launches straight from the Lock Screen. All of that is free too. ■ Free, forever Auto shooting · EV compensation · tap to focus · two-axis white balance · lens switching · histogram · grid · level · burst · volume shutter · Lock Screen launch · photo library · the basic editor ■ Lumen Pro · Manual mode — ISO, shutter, focus · One-tap lock — every value at once · RAW · DNG · RAW+JPEG · Video — 4K, interval, time-lapse · All 22 filters + the full editor (with tone curve) ■ Privacy Lumen contains no networking code at all. No servers, no accounts, no analytics, no ads, no tracking. Nothing you shoot or configure ever leaves your iPhone. —— Lumen Pro is an auto-renewing subscription after a one-month free trial, or a one-time lifetime purchase. Cancel anytime.