Primality app icon

Apps Like Primality for iPhone and iPad

Check if a number is prime

Determine if a number is prime or list its prime factors. Input any integer between 0 and 999,999,999,999. Identify the prime ordinality of a prime number, showing its position in the sequence of primes.

by Bruce Schechter★ 4.926 ratingsUtilitiesFreeData updated 2026-09-26

Primality screenshots

Ranked alternatives

Showing 821–840 of 1,000 ranked alternatives.

  1. Pipe Flow Liquid Pipe Diameter app icon

    Pipe Flow Liquid Pipe Diameter

    Daxesoft Ltd

    Calculate for rate and pressure loss

    Calculate minimum internal based on rate and maximum pressure loss. Input elevation changes and select valves and fittings. Display Reynolds number and friction factor. Export results in various formats.

    ★ 4.65 ratingsUtilitiesFreeData updated 2026-09-06
  2. Easy Transposer app icon

    Easy Transposer

    JOSEPH AFEWORK

    Generate new chords for any key.

    The app generates a chart showing new chords for any given key. Users can transpose songs to different keys with this application.

    ★ 3.45 ratingsMusicFreeData updated 2026-09-15
  3. Calculator T app icon

    Calculator T

    Xiao Hou Yi Sheng Traditional Chinese Medicine Technology (Shenzhen) Co., Ltd

    ★ 0.00 ratingsUtilitiesFreeData updated 2026-09-06
  4. Fortunizer randomizer app icon

    Fortunizer randomizer

    Vasiliy Dubrovskiy

    Generate random numbers and passwords

    Generate random numbers within a specified range. Create complex passwords with one click. Roll dice or use a wheel of fortune to select from lists. Toss a coin or generate random colors. Use a Magic 8 Ball for random answers.

    ★ 0.00 ratingsUtilitiesFreeData updated 2026-09-06
  5. PocketCAS: Mathematics Toolkit app icon

    PocketCAS: Mathematics Toolkit

    Timing Software GmbH

    Mathematics toolkit for iPhone and iPad.

    The app provides mathematical capabilities including 2D and 3D plotting, calculus, linear algebra, and equation solving. It also offers scripting, physical units, iCloud support, and export options.

    ★ 0.00 ratingsEducation$29.99Data updated 2026-10-20

How we rank alternatives

Apps are ranked by functional similarity, category fit, rating confidence, and popularity.