Sigma Notepad Calculator

Spreadsheets are overkill. A calculator forgets your work. Sigma keeps the math, the labels, and the thinking in one place.

Type your math. Sigma calculates as you write. A notepad where every line is a working calculation.

Type "rent 1200, food 380, transport 95" and Sigma adds them. Write "20% of 240" and the answer appears beside the line. Name a value, reference it three lines down, and every dependent answer updates when you change the source.

Free forever for everyday use: three sheets, full calculator, no ads. Upgrade to Sigma Pro yearly, monthly, or once-for-life when you need unlimited sheets, export, and iCloud sync.

Highlights:

• Natural language arithmetic. Operators read like English. Percentages, totals, averages, and units all work the way you write them.
• Named variables. Declare once, reference everywhere. Changes propagate.
• Currency. Live rates with offline cache. Tap a line to see when rates were last fetched.
• Themes. Six themes including a high-contrast option. The default follows your system light and dark; five more unlock with Sigma Pro.
• Sheets. Up to three sheets on the free tier. Sigma Pro unlocks unlimited sheets, export to PDF, Markdown, and plain text, plus iCloud sync across your devices.
• Private by default. Sheets stay on your device. iCloud sync uses your private database, never our servers.
• Designed for iOS first. Reads French and English natively. No web app, no ads, no surprise pop-ups.

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://getsigma.app/privacy