What’s New

This post lists the features implemented in the NerdyCalc Xcode project.

Platforms and workspace

• Native macOS and iOS apps.
• Calculation sheets with a title, editable lines, creation date, modification date, and pinned state.
• Folders for grouping sheets.
• Create, rename, delete, pin, unpin, reorder, group, and ungroup sheets and folders.
• Manual ordering, title sorting, and modification-date sorting.
• Search across sheet titles.
• Mac three-column layout with navigator, sheet editor, and results inspector.
• iOS navigation from the sheet list to folders and sheets.
• Keyboard navigation on Mac, including Return to open and Escape to go back.
• Selection of one or multiple sheets for folder and pin actions.

Sheet editor

• Calculations evaluated from top to bottom.
• Variable assignments and references.
• Variable names containing letters, numbers, spaces, underscores, and hyphens.
• Headings using #.
• Comments using //.
• Inline comments after an expression.
• Separators using ---, ***, or ___.
• Line references using @ followed by a line number.
• Automatic section summaries.
• Explicit total, subtotal, and sum lines.
• Linked editor and results scrolling on Mac.
• Syntax highlighting for numbers, operators, currency symbols, variables, comments, headings, and total results.

Arithmetic and functions

• Addition, subtraction, multiplication, division, powers, modulo, and remainder.
• Parentheses and standard order of operations.
• Natural-language operators including plus, minus, times, multiplied by, divided by, and to the power of.
• The constants pi and π.
• Abbreviated numbers using k, m, and b.
• Functions: sqrt, cbrt, sin, cos, tan, exp, ln, log2, log, log10, abs, and fact.
• Aggregate expressions for totals, sums, averages, means, counts, and medians.
• Boolean values and comparisons using ==, !=, >, <, >=, and <=.
• Conditional expressions and conditional statements.
• Percentages, percentage increases and decreases, percentage-of expressions, and fraction/percentage conversions.
• Number-base literals for hexadecimal, binary, and octal values.
• Conversions between decimal, hexadecimal, binary, octal, and arbitrary bases.
• Rounding to decimal places or digits, rounding up or down, and rounding to tens, hundreds, thousands, and millions.

Units and conversions

• Arithmetic with compatible units.
• Conversion using in, to, arrows, or greater-than signs.
• Length, area, volume, time, mass, speed, angle, frequency, power, energy, digital-storage, data-rate, and temperature units.
• Metric and imperial units.
• Byte, bit, and binary-prefix units.
• Temperature conversion between Celsius and Fahrenheit.
• Pixel, point, and em units.

Finance calculations

• Annual return and return-on-investment calculations.
• Present value calculations.
• Compound interest with monthly, quarterly, yearly, or annual compounding.
• Loan repayment and interest calculations using principal, rate, and term.

Dates, time, and calendars

• today, now, tomorrow, and yesterday.
• Dates in multiple common formats.
• Weekday expressions such as next, previous, and current weekdays.
• Date arithmetic using years, months, weeks, and days.
• Date ranges and the number of days between dates.
• Workday calculations that exclude weekends and supported public holidays.
• Named holidays including New Year’s Day, New Year’s Eve, Valentine’s Day, Easter, Memorial Day, Independence Day, Labor Day, Halloween, Thanksgiving, Christmas, and Boxing Day.
• Time arithmetic using hours, minutes, and seconds.
• Time differences and durations.
• Time in a location and date in a location.
• Time-zone conversion and time-zone differences.
• Video timecodes, frames, and frame-rate calculations using fps.
• Time-span conversion and arithmetic for seconds, minutes, hours, days, and weeks.
• Lap-time calculations and formatted durations.

Special calculations

• Decimal-per-day calculations.
• Half of a value.
• Midpoints between two values.
• Random numbers between two values.
• Greatest common divisor and least common multiple calculations.

Formatting and display

• Decimal results with fractional-digit formatting.
• Currency symbols including $, €, £, ¥, and ₹.
• Percentage and multiplier result formats.
• Base-prefix result formats.
• Calendar and time-zone-aware date and time output.
• Error output for unsupported or invalid expressions.

Appearance and preferences

• System, light, and dark appearance modes.
• Font families: SF Pro, Avenir Next, Helvetica Neue, Menlo, Monaco, and Georgia.
• Adjustable text size from 12 to 18 points.
• Preset themes: Midnight Bloom, Deep Slate, Pastel Comfort, Neon Retro, and Arctic Frost.
• Custom syntax colors for light and dark appearances.
• Reset controls for text appearance.
• Local preferences for appearance and font settings.
• Syncable preferences for syntax theme, custom syntax colors, sorting, and display settings.

iCloud and sharing

• Optional iCloud sync for sheets, folder groups, selection, and syncable preferences.
• Sync status, account availability, last-sync information, snapshot size, and error state.
• Manual Sync Now action.
• Export sheets as Markdown, PDF, or PNG/image.
• Share sheets through Mail and Messages.
• Native iOS share-sheet fallback.
• Mac x-callback URL support for opening sheets and deep links.

Getting Started

• Built-in Getting Started screen.
• Examples for arithmetic, assignments, percentages, functions, unit conversions, dates, and comments.
• Copyable examples.
• Mac shortcut to open Getting Started with Command-Question Mark.