• Results carry the right unit: pow(3 m, 2) is 9 m², 6 kWh / 4 h is 1.5 kW, 100 km / 70 km/h is a travel time, and lists and matrices with units add across units. • Percentages stay percentages in variables, text and totals, so after VAT = 19% the line 100 € + VAT is 119 €, 100 + -10% is 90, and 15000 / 200000 in % is 7.5 %. • Exact arithmetic where it matters: results a rounding step from a whole number count as whole, trigonometry at 30° and 45° and temperatures convert exactly, and nCr, nPr and complex powers are exact. • Results that cannot be computed, such as tan(90°), ln(0), overflow or values too small, are reported instead of showing infinity, NaN or 0. • A function name without brackets (sqrt 16), calculations taken for notes, a while or for loop that fails, and unknown units name the likely fix; a failed loop or method call restores the earlier state. • Comparisons can be chained, 1/2x is 1/(2x), 1/2 kg is half a kilo, and 7 % (-3) is -2 as in spreadsheets. • Clock times and durations show their seconds, 8:15 + 90 asks for a unit, today + 1.5 adds a day and a half, and dates outside the years 1 to 9999 are reported. • solve, factor and simplify keep tiny coefficients, calculate systems exactly, follow the sheet's number format and tell apart roots that lie close together. • Statistics, diff, integrate and finance functions (npv, rate, irr) follow the textbook, keep units and currencies, and report divergent or ambiguous cases; percentile(xs, 90%) is the 90th percentile. • Offers compute VAT on the printed net amount, round plain amounts to cents, read VatRate = "19%" as typed, and warn about mixed currencies or fractions of a cent; total reports error and list lines. • Files and drafts are stored with a decimal point and show in your number mode; Windows line endings, a BOM, CSV with decimal commas and forms with commas or brackets in a label open correctly. • Documents and libraries name the app version in their header app_version, which replaces version and min_app_version; a precision outside 0 to 15 is clamped. • New units ms, µs, ns, hPa, kPa, MPa and mbar; the µ prefix works for custom units, and in also means inch (1 ft in in is 12 in). • Error messages appear in the app's language, never show internal text, and plots, csvwrite and hist report the cause of a bad range. • Editor: a variable named like a unit is underlined with a hint, the parameter hint sits right behind the cursor, @N references follow deleted lines, and to, as, elif, break and continue are coloured. • Settings are sorted from look to behaviour, closing a window removes its empty draft, a tip shows the progress circle only on the tip you tapped, and in the compact layout a long result wraps instead of being cut off. • Note mode: a plain input with a comment, like months = 36 // term, no longer repeats its value behind the text. • Undo no longer reaches into the next sheet after a sheet is deleted, and saving in comma mode leaves decimal commas in notes, comments and headings as typed. • × and ÷ calculate like * and /, 10 km % 3 is 1 km, sums of quantities stay exact across very different sizes, and min, max and sort take dates and clock times. • Text lines starting with {{ are text, {name} alone on a line reports an unknown name, @3 in a note stays text, and solve names the mismatch between equations and unknowns. • The search in the reference lists the places where a word is defined first.

- "New: in converts right in the line, like 5 km in mi, 90 min in h, 36 km/h in m/s or 20 °C in °F." - "New: durations can be typed the way they are shown, like 3 h 20 min, and days and weeks are units (2 days, 1 wk)." - "New: angles in degrees, so sin(30°) is 0.5 and atan(1) in deg is 45°." - "New: 2x, 2pi and 3sin(x) calculate without *, ln(x) is the natural logarithm, and cos²(x) is written as in maths." - "New: the pin next to the clock, or Ctrl+Shift+D, puts the current time in place of now, so start = now stays put while now - start keeps running; forms show the clock too." - "Forms work in note mode too, as a compact input mask you can switch back to text." - "Debug output of a loop runs beside its indented lines instead of pushing them down." - "An odd root of a negative number is now the real one, so (-8)^(1/3) is -2; roots(x, n) gives all n solutions." - "New samples for a road trip and a roof pitch, and the other samples use the new notation where it fits." - "Fixed: on iOS, drafts are saved again, and the keyboard returns after switching views." - "Fixed: days() counted a day too few across a daylight-saving change." - "Fixed: sinh, hypot, integrate, complex exp and similar functions stay accurate at very large or small values, integrate() reports a pole, and irr() and rate() find solutions far from 10 %." - "Fixed: factor(), diff(), map(), filter() and decimal defunit factors in edge cases, and mod() keeps units, so mod(2 h, 45 min) is 30 min." - "Fixed: a clock time like start = 8:12 shows faint like other plain inputs, and notices at the bottom of the window are readable in every theme."