Calc-sium

Calc-sium is a calm, premium calculator that does far more than add up. Every answer is worked out with precision, and every screen is designed to feel effortless — in light or dark.

THE CALCULATOR
- Live answers — see the result as you type, before you press =
- Calm, clear answers — your sum sits quietly above, the answer stands out below
- Big numbers in words — "2,909.72 Crore · 29.10 Billion" appears under large answers
- Scientific mode — turn your phone sideways for sin, cos, tan, log, ln, √, ∛, x², xʸ, x!, π, e and more, with DEG/RAD and a 2nd key for inverse functions
- Tap any previous calculation to use it again
- Unlimited history with date, time and tags

KIDS MODE
Tap any answer to see it worked out step by step — column addition with carries, subtraction with borrowing, and times tables shown as colourful blocks. Perfect for learning at home.

EVERYDAY TOOLS
- +Tax — set your tax rate once, add it with one tap, and see exactly how much tax was added
- What % — percentage of, percentage change and more
- Currency converter — 165+ currencies with live rates
- Unit converter — all major units; convert one and see every related unit instantly
- Smart Bills — never miss a due date, with gentle reminders
- Split & Tip — split any bill between friends in seconds
- Loan · EMI — monthly payments, total interest and more
- Gold — making charges and total price, made simple
- Compare — which pack is the better deal? Price per unit, worked out for you
- QR Codes — create and share your own, with colours and captions

WORLD INFO
Time, weather, sunrise and sunset for cities in 200+ countries — plus currency, languages, emergency numbers, plug types, voltage, driving side and nearby international airports. A sun or moon shows whether it's day or night there.

CARE REMINDERS
CYCLE & OVULATION
- Your fertile days, likely ovulation and next period on a simple cycle ring
- A colour-coded calendar and your next three cycles
- Gets more accurate as you log each period
- Your dates stay on your phone — never shared or backed up online
An estimate only — not a method of birth control.

DESIGNED WITH CARE
- Automatic light and dark themes
- Designed for phones and tablets, upright and sideways
- Soft haptics and sounds you can switch off
- Larger, easy-to-read text throughout
- And a few hidden surprises for the curious…

Your calculations, history and reminders stay on your phone. No account needed.

Calc-sium is made with love by CODING_CONSOLE.