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 581–600 of 1,000 ranked alternatives.

  1. Planetary Clock app icon

    Planetary Clock

    Piotr Knapczyk

    Track positions in real time

    View positions of all solar system planets at any date. Adjust time to see real-time movements. Display accurate orbit sizes, eccentricity, and orbital shapes based on NASA data. Show realistic planet sizes relative to each other.

    ★ 4.934 ratingsEducation$0.99Data updated 2026-09-09
  2. Dictionary of Paraphrases app icon

    Dictionary of Paraphrases

    Lan Huong

    Paraphrase words with synonyms and examples

    Provides offline access to a . Look up words to see meanings, sample sentences, and synonyms. Replace phrases with alternative expressions for clearer communication.

    ★ 0.00 ratingsReference$1.99Data updated 2026-09-17
  3. CITESwoodID app icon

    CITESwoodID

    Sven Koch

    Identify and describe CITES-protected timbers

    Identify CITES-protected timber species using macroscopic features. Access descriptions and compare characteristics. Perform interactive identification based on visual data. Store and retrieve species information for reference.

    ★ 4.01 ratingsReferenceFreeData updated 2026-10-06
  4. Retro Classics: Collection 1 app icon

    Retro Classics: Collection 1

    Rob Wilmot

    Four classic games from childhood.

    The app provides four classic games, offering bright graphics and retro sounds. It simulates handheld and tabletop games from a past era.

    ★ 3.02 ratingsGames$3.99Data updated 2026-10-24
  5. eatTrace app icon

    eatTrace

    Z Creative Studio Srls

    ★ 0.00 ratingsProductivityFreeData updated 2026-09-06

How we rank alternatives

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