OmniCalc - Smart Calculator

A clean and powerful expression calculator with history notes, multi-page management, and 8 keyboard themes. All data stored locally to protect your privacy.

OmniCalc is a clean and powerful smart calculator designed for users who value calculation records and privacy.

【Core Features】 • Expression Calculator — Full math expression input with parentheses, percentages, and correct operator precedence • Live Preview — See results instantly as you type • History Notes — Add remarks to each calculation record for easy reference (e.g., travel expenses, meals) • Operand Notes — Annotate individual numbers in an expression to record what each amount represents • One-Tap Sum — Automatically total all results on the current page

【Calculation Page Management】 • Multi-Page — Organize calculations by project or scenario • Search & Filter — Search by title and notes, filter by date range • Share Records — Export calculation records as images

【Customization】 • 8 Keyboard Themes — Classic, Ocean, Forest, Sunset, Violet, Sakura, Midnight, Mint • Appearance — Light / Dark / System • Precision Control — Custom decimal places (0–10), thousands separator, scientific notation • Interaction Feedback — Key sound and haptic feedback can be toggled independently

【Multi-Language】 Supports 13 languages including English and Simplified Chinese. Switch interface language anytime.

【Privacy First】 All data is stored locally on your device. No network connection required. No personal data collected. No ads or third-party tracking.