Calculator: Vault & Scientific

A calculator for life: clean, fast and easy to read, with everything from everyday sums to scientific, statistics and programmer modes. It also has a private vault for the photos, videos and notes you want to keep to yourself. STANDARD • Big, clear display that shows the answer as you type • Brackets, percent, ± and full history • Memory keys: MC, MR, M+, M−, MS • Long-press the display to copy a result SCIENTIFIC • sin, cos, tan and their inverses, in degrees or radians • x², x³, xʸ, √, ∛, 1/x, n!, |x| • ln, log, eˣ, 10ˣ, π and e STATISTICS • Enter a list of numbers and see the results instantly • Count, sum, mean, median, mode, min, max, range • Standard deviation and variance (population and sample) PROGRAMMER • See every number in HEX, DEC, OCT and BIN at once • AND, OR, XOR, NOT, shifts and mod on 64-bit integers THEMES • 7 themes: Mandala, Dark, Light, Ocean, Sunset and Forest, or follow your phone's light/dark setting PRIVATE VAULT • Hide photos and videos from your gallery behind a PIN • Write private notes • Built-in photo viewer and video player • Open it by typing your PIN on the calculator and pressing = • Restore items to your gallery at any time • Locks as soon as you leave the app; screenshots are blocked while it is open • Files are encrypted with AES-256 and stored only on your phone. Nothing is uploaded. • Forgot your PIN? Reset it with your security question. Important: the vault is stored only on this device. Uninstalling the app or clearing its data permanently deletes everything in the vault, so restore anything you want to keep first.