Observer Pro app icon

Apps Like Observer Pro for iPhone and iPad

Plan observations and capture celestial events

Plan observing sessions by predicting celestial object visibility and weather conditions. Track star positions and calculate exposure times for astrophotography. Set location and date to get accurate sky maps and event alerts.

by Joshua Bury★ 4.649 ratingsEducation$13.99Data updated 2026-09-08
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    SensorLab

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  14. InstantCert CLEP app icon

    InstantCert CLEP

    InstantCert.com, LLC

    Study and DSST exams anytime

    Study for , DSST, and TECEP exams with smart flashcards and subject-specific content. Track progress and prepare for exams. Access materials anytime on a mobile device.

    ★ 0.00 ratingsEducationFreeData updated 2026-09-12
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