Научный калькулятор Desmos

Actually does

• ✓Calculator85% of reviews
• ✓Тригонометрические функции15% of reviews
• ✓Offline-first5% of reviews
• ✓Ad-free15% of reviews
• ✓Определение собственных функций10% of reviews
• ✓Присваивание значений переменным20% of reviews
• ✓Просмотр нескольких выражений одновременно25% of reviews
• ✓Keyboard(bonus)10% of reviews
• ✓Dark mode(bonus)5% of reviews
• ✓Поддержка комплексных чисел(bonus)5% of reviews
• ✓Free tier20% of reviews

Claimed, but not confirmed by reviews

• ⚠Статистические функции (среднее, стандартное отклонение)
• ⚠Комбинаторика (факториалы, сочетания, размещения)
• ⚠Accessibility

Common complaints

• ✗App restart/data clearing when keyboard is connected10% of mentions

  «When keyboard is connected, the app restarts (data resets)»

• ✗Calculation errors (order of operations)15% of mentions

  «36/3*(8-6)/6 gives the wrong result»

• ✗No session save/restore functionality10% of mentions

  «You build complex calculators with lots of variables, then you have to delete it»

• ✗Usability issues (formula navigation, orientation)10% of mentions

  «No way to quickly move through a formula with finger gestures, no landscape mode»

• ✗Settings not saved (font size, dark mode)5% of mentions

  «Font size and dark mode are not saved when closing the app»

What people praise

• ★Completely free with no ads

  «No ads, completely free»

• ★Rich set of built-in functions

  «Very handy calculator with lots of functions, maximum functions in every way»

• ★Convenient viewing of all calculations on a single screen

  «All previous actions remain visible on screen, previous calculations stay active»

• ★Convenient external keyboard support

  «Full keyboard support makes calculations even faster»

• ★Calculation accuracy (most users don't report errors)

  «Over many years it hasn't given a single wrong result»

Where to install