DeepOcean · Calculator + Vault
Real maths on the keypad. A vault behind it.
DeepOcean writes fractions, roots and powers the way your notebook does and answers while you type. Type your password instead of a sum and the keypad opens an encrypted vault for the pictures and videos you would rather not leave in the gallery.
Free, no account, nothing to install - and nothing you type leaves your device.
What makes it different
A calculator you can read, and a vault your gallery knows nothing about.
A real math keyboard
Fractions, powers, roots, sin · cos · tan and their inverses, log, π, e, n! and °F ⇄ °C - written out the way a textbook writes them, not squeezed into one line.
The answer as you type
The result sits under the expression and follows every key, so you see a mistake before you finish typing it.
A vault behind the keypad
Type your password and press ⏎: the calculator opens your own vault of photos and videos, encrypted on your device. To anyone else it is just a calculator.
Offline, and installable
The web version keeps working with no network at all and installs like any other app, straight from the browser.
The same app everywhere
Browser, Android phone and Windows desktop run the same calculator, with the same keypad and the same vault.
It stays with you
Nothing is sent anywhere. The Windows version cannot be changed from a distance, which makes it the safer home for a vault you care about.
Three ways to run it
Start in the browser. Take it with you when you want to.
Also on this site
Small services running on our own web server.
Your IP, and where it is
The address you are calling from, its city, its provider and a map - in English or 中文, as a page or as JSON for your scripts. It reads the real address even when you arrive through a CDN.
Open /ip