Amatda - Scientific Calculator

Type fractions, roots and exponents the way they look in your textbook, and get exact answers like 5/6 and 2√2. Simplify algebra and see every step.

Amatda Calculator is a scientific calculator that lets you type and read math exactly as it appears in a textbook. Fractions look like fractions, roots look like roots and exponents sit up high, so you can check what you entered at a glance.

■ Natural math input • Fractions and mixed numbers, square/cube/nth roots, powers, absolute value, logarithms with any base • Integrals (∫), derivatives (d/dx) and sums (Σ) • Move between boxes with the arrow pad, or tap the expression to place the cursor • Touch and hold the arrow pad and the cursor follows your finger • Long expressions scroll smoothly with the cursor, and you can swipe to look around • Nested fractions are sized to stay readable

■ Exact results • Results stay exact as fractions, √ and π (e.g. 1/2 + 1/3 = 5/6, √8 = 2√2) • Switch between fractions and decimals with F⇔D • Integer results also show the prime factorization • Choose Normal, Fixed, Scientific or Engineering format and the number of significant digits

■ Simplify • Combine, reduce and expand algebraic expressions (e.g. 4 + 10/3 − X → 22/3 − X) • Switch the result between Combined, Split, Mixed and Decimal forms • See the common-denominator steps (4 = 12/3 → (12 + 10 − 3X)/3 → (22 − 3X)/3) • Copy the result as LaTeX and paste it into Notion, Obsidian and more as a real fraction

■ Equations and more • FIND X: solves your expression for X • Polynomial equations (degree 2, 3, 4), including imaginary solutions • Simultaneous linear equations (2, 3 or 4 unknowns) • Integer Tools: GCD, LCM, prime factorization • Complex numbers, base-N (binary, octal, decimal, hex), statistics (mean, standard deviation) • Trigonometric and hyperbolic functions, degrees-minutes-seconds, permutations and combinations, variables (STO, RCL), memory (M+, M−)

■ Comfortable to use • Reload any of your recent calculations from History • Light and dark mode, three button sizes, haptic feedback • Built-in guide for every key and screen • iPad: resizable windows, plus Apple Pencil only / touch only input

■ Free, recharged with ads • Your first 12 hours after installing are ad-free • Each ad you watch adds 12 hours, and you can save up to 48 hours • No sign-in. Settings and history stay on your device • All calculations run on your device (the internet is used only for ads and to check for a new version)