Yuzu Sum is a notepad-style calculator for Mac: each line represents a calculation, the result appears immediately beside it, and the total for the entire page is displayed at the bottom of the window.

• Input amounts in Vietnamese style such as 500k, 1tr2, 2tr5; label before the colon; use total, prev, and variables to re-calculate with the same number.
• Percentages: add VAT, subtract discounts, calculate deposits (20% of price, price + 8%, price - 5%).
• Unit conversion: length, weight, temperature, data, time, including Vietnamese units like sào.
• Currency exchange: pairs including VND use the Vietcombank exchange rate (default is the transfer price, type buy or sell to select the price); other pairs use the middle market price from ExchangeRate-API, including the source and the time of the exchange rate.
• Vietnamese number format (1.000,5) or US format (1,000.5).

Shortcuts: ⌥Space to show/hide Sum, ⌘N for a new page, ⇧⌘C to copy the result of the current line, ⇧⌘T to copy the total of the page. You can pin the floating window on top of other applications.

Spreadsheets automatically save on Mac: no account, no synchronization of spreadsheets, no usage tracking. The application only uses the internet to retrieve exchange rates and check for updates; it can still use saved rates when offline.

Standalone beta application v0.5.0, macOS 14 and above, Apple silicon and Intel, signed with Developer ID and Apple notarized.