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

Primality screenshots

Ranked alternatives

Showing 401–420 of 1,000 ranked alternatives.

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    School Safety OT Calculator

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    Float Hartwell

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    Cookie Calculator

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    Minerals Center

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  9. Random Number App app icon

    Random Number App

    Wayne Perry

    Generate numbers and custom lists

    Generate numbers for Bingo Balls, Cards, and dice. Create custom lists and let the select items. Simulate decisions, play games, or run trials with randomized outcomes.

    ★ 4.233 ratingsEntertainmentFreeData updated 2026-09-06

How we rank alternatives

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