Apps Like Calvin Opera for iPhone and iPad
Calvin Opera screenshots
Ranked alternatives
Showing 961–980 of 1,000 ranked alternatives.







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.








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.

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.

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.
How we rank alternatives
Apps are ranked by functional similarity, category fit, rating confidence, and popularity.