OmniCalc - Calculator & Notes

Give every number a meaning. OmniCalc is a calculator with notes, saved history, and one-tap totals, so you can keep track of both the answer and how you got there.

ADD NOTES TO NUMBERS AND CALCULATIONS
Label individual numbers as price, quantity, shipping, or anything else you need. Add a note to the whole calculation to make it easy to understand later.

TOTAL MULTIPLE RESULTS
Keep related calculations on one page and add up all results with one tap. Useful for grocery lists, travel expenses, and everyday spending.

KEEP PROJECTS SEPARATE
Create separate calculation pages for costs, quotes, and budgets. Enter your own numbers and expressions, then keep the steps for future reference.

FIND AND REUSE YOUR HISTORY
Search by title or notes, filter by date, and reopen saved calculations to continue working. Share calculation records as images.

EVERYDAY MATH, YOUR WAY
Use arithmetic, parentheses, and percentages with live result previews. Choose 0–10 decimal places, thousands separators, light or dark appearance, and eight keyboard color themes.

Supports English and Simplified Chinese.

PRIVACY
Expressions, calculation results, history, and note contents stay on your device. The calculator works offline. Usage analytics is enabled by default and sends a random installation ID, usage counts, foreground duration, device/app information, and country/region inferred from the connection IP to the developer-operated service. No ads, advertising identifiers, or cross-app tracking.

USER FEEDBACK
Only when you submit feedback, we receive your message, optional contact details, and selected images to handle your request and reply. Images are compressed and original metadata is removed before upload. Calculation history, installation IDs, and diagnostic logs are not automatically attached. Feedback is kept online for 180 days; backups may retain it for up to 7 additional days.