Amatda - Scientific Calculator

Fractions & roots, as written

Free · Designed for iPad. Not verified for macOS.

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)

Ratings & Reviews

  • This app hasn’t received enough ratings or reviews to display an overview.

• Move Terms: drag terms across the = and watch them flip sign, combine like terms with automatic common denominators, and tap colored fractions to reduce them. • Free with ads: your first 12 hours are ad-free, then each ad adds 12 hours (save up to 48 hours). • English is now supported. The app follows your device language, or choose Korean/English in SETUP. • Touch and hold a key, then slide up-left for SHIFT or up-right for ALPHA to enter that function directly. • Simplify now handles equations: every term moves to one side, e.g. 3X+2 = X−4 → X+3 = 0. • Solve simultaneous linear equations right in the calculator: 2X+3Y=7, X−Y=1 → X=2, Y=1.

Version 1.1

The developer, SEUNG KYUN WOO, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Location
    • Identifiers
    • Usage Data
    • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
SEUNG KYUN WOO
Size
9.3 MB
Category
Utilities
Compatibility
Requires iOS 17.0 or later.
  • iPhone
    Requires iOS 17.0 or later.
  • iPad
    Requires iPadOS 17.0 or later.
  • Mac
    Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
Languages
English and Korean
Age Rating
4+
Copyright
© 2026 SEUNG KYUN WOO
  • Developer Website
  • Privacy Policy

    • More by SEUNG KYUN WOO

    You Might Also Like