Secchi app icon

Apps Like Secchi for iPhone and iPad

by The Secchi Disk Foundation★ 0.00 ratingsEducationFreeData updated 2026-09-06
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Ranked alternatives

Showing 121–140 of 1,000 ranked alternatives.

  3. CardioTrials - Cardiology app icon

    CardioTrials - Cardiology

    Theo Correa

    Stay updated with research

    Access and read expertly synthesized scientific articles on . Filter studies by key, important, and iconic categories. Stay updated with recent research from major journals. Save time with concise, independent analyses.

    ★ 5.02 ratingsMedicalFreeData updated 2026-09-12
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  5. WWF Explore! app icon

    WWF Explore!

    World Wildlife Fund, Inc.

    Explore wildlife and ecosystems

    Explore interactive expeditions featuring endangered animals and their habitats. Follow students and a teacher on journeys to Africa, Amazon, Arctic, China, and Himalayas. Discover biodiversity through animated scenes and educational content.

    ★ 4.122 ratingsBookFreeData updated 2026-09-09
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  8. us citizenship exam 2022 audio app icon

    us citizenship exam 2022 audio

    Emre Gurses

    Study civics test questions and answers

    Study for the US Civics Test with practice questions and answers. Take mock exams with up to 10 questions from a preset list. Track progress and review correct answers. Learn test formats and requirements.

    ★ 4.851 ratingsEducationFreeData updated 2026-09-06
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  9. VisiGrab: Learn Algorithms app icon

    VisiGrab: Learn Algorithms

    Ievgen Ovsii

    Study and data structures visually

    Visualize and interact with and data structures through dynamic animations. Explore step-by-step breakdowns of sorting, searching, and graph . Practice coding exercises and test knowledge with quizzes.

    ★ 4.870 ratingsEducationFreeData updated 2026-09-06
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  12. Monarch SOS app icon

    Monarch SOS

    Naturedigger LLC

    Identify monarchs and report sightings

    Identify butterflies across all life stages and distinguish from look-alikes. Learn about milkweed species and their role in development. Report sightings to contribute to scientific research.

    ★ 4.618 ratingsEducationFreeData updated 2026-09-09
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  14. US Citizenship Test Cantonese app icon

    US Citizenship Test Cantonese

    Wei Zhang

    Practice questions and answers

    Prepare for the US interview with practice tests in . Answer questions in three modes: flashcards, starred, and listen. Review answers, save difficult questions, and listen to audio versions of the questions.

    ★ 4.845 ratingsEducationFreeData updated 2026-09-10
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  15. Hush City app icon

    Hush City

    Antonella Radicchi

    Find quiet spots and map them

    Find and map quiet locations using location data. Record ambient sounds at each spot. Take photos to document the area. Share locations with the community. Evaluate noise levels and contribute to a global quiet map.

    ★ 3.76 ratingsEducationFreeData updated 2026-09-11
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