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★ 4.924 ratingsUtilitiesFreeData updated 2026-09-06
App detailsView in App Store

Primality screenshots

Ranked alternatives

Showing 501–520 of 1,000 ranked alternatives.

  1. QuiltingCalc app icon

    QuiltingCalc

    Handmade Interactive LLC

    Convert yards to inches and meters

    Quilting calculators help convert units between yards and inches, meters and centimeters. Determine fabric needed for backing, batting, and borders. Calculate rectangular pieces from larger fabric.

    ★ 4.2144 ratingsUtilitiesFreeData updated 2026-09-08
    App details
  12. Satellite map AR SatFinder 3D app icon

    Satellite map AR SatFinder 3D

    Yuriy Kvasha

    Align dishes for optimal signal

    3D helps align dishes for better signal reception. Users select a from a list, enable AR mode, and choose dish type. The displays a 3D model showing dish orientation and signal path.

    ★ 5.02 ratingsUtilitiesFreeData updated 2026-09-10
    App details

How we rank alternatives

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