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
App detailsView in App Store

Observer Pro screenshots

Ranked alternatives

Showing 341–360 of 1,000 ranked alternatives.

  3. Ruler, level, tape measure app icon

    Ruler, level, tape measure

    Elard Tissot

    Objects with AR precision

    Objects using an augmented reality camera interface. Select units like inches, feet, centimeters, or meters. Capture and save measurements. Share results via email or messaging. Sync measurements across devices.

    ★ 4.9109 ratingsUtilitiesFreeData updated 2026-09-06
    App details
  4. NVS Explorer app icon

    NVS Explorer

    IOOS Association

    Access Pacific Northwest Ocean Data

    The app provides access to data for Pacific Northwest waters. Users can view recent data, trends, and save or share plots.

    ★ 4.33 ratingsUtilitiesFreeData updated 2026-09-14
    App details

How we rank alternatives

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