Calvin Opera app icon

Apps Like Calvin Opera for iPhone and iPad

by jeong youngoh★ 1.01 ratingsReference$15.99Data updated 2026-09-10

Calvin Opera screenshots

Ranked alternatives

Showing 961–980 of 1,000 ranked alternatives.

  1. Tobacco IPM app icon

    Tobacco IPM

    Centre for Agricultre and Biosciences International

    ★ 0.00 ratingsReferenceFreeData updated 2026-09-10
  2. Sherlock Holmes Audio Library app icon

    Sherlock Holmes Audio Library

    WGQM Partners, LLC

    Listen to stories and novels

    Access audiobooks and ebooks of stories. Listen to 4 novels and 44 short stories. Organize content into four books. Read or listen to stories anytime. Sync across iPad and iPhone.

    ★ 0.00 ratingsBookFreeData updated 2026-09-08
  3. Miles to Km Converter app icon

    Miles to Km Converter

    JanoGroup LLC

    Convert to kilometers and vice versa

    Convert to kilometers and kilometers to with instant, precise calculations. Save conversion history and switch between dark and light themes. Works offline and features a clean, user-friendly interface.

    ★ 0.00 ratingsUtilitiesFreeData updated 2026-09-06
  4. Bilingual technical dictionary app icon

    Bilingual technical dictionary

    Jerome Goursau

    Technical translation for all fields.

    The app provides over 50,000 specialized terms and expressions for industrial sciences and techniques. It offers contextual definitions, pronunciation, and offline access for professionals and learners.

    ★ 0.00 ratingsReferenceFreeData updated 2026-09-18
  5. iNSIGHT Color Vision Test app icon

    iNSIGHT Color Vision Test

    Polyhedron Learning Media, Inc.

    Analyze color vision deficiency results.

    The app adapts a clinical test for color vision disorders. Students arrange colored discs and analyze results to identify deficiencies using four available color sets.

    ★ 0.00 ratingsEducation$2.99Data updated 2026-10-10

How we rank alternatives

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