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Observer Pro

Observer Pro

Deep sky astronomy planner

49 ratings
120 reviews
#173 in paid Education
📚 Education
🔧 Utilities
$13.99

Details

  • Released
  • Updated
  • September 16, 2011
  • March 25, 2025

Features

Developer

Joshua Bury
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📉no. 173
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❓5 answered
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About

This app helps advanced astronomers and astrophotographers plan their observing sessions. It predicts object visibility, factoring in local obstructions, and provides weather forecasts. Manage observing lists and favorite sites to maximize your stargazing time.

✓14,000+ deep sky objects with photos
✓Local horizon profile measurement
✓Object visibility prediction charts
✓Featured object recommendations
✓Favorite observing site management
✓Astronomical weather forecasts
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What users say

Summarized from real user reviews of Observer Pro. Based on 49 reviews and a 4.6/5 average, it highlights the 11 positives and 11 negatives reviewers mention most about this Education app.

Positive things

  • 🎯Excellent target planning and visibility forecasting
  • 🌍Custom horizon mapping feature is intuitive and unique
  • 📊Comprehensive visualization graphs and charts
  • 🔍Extensive DSO catalog with detailed object information
  • 📸Offline object images included
  • ⏰Accurate altitude and timing calculations
  • 🌙Moon phase integration for planning
  • 💰Good value for the price
  • 🎨Clean, intuitive user interface
  • 🌐Works globally for any location
  • 📱Lightweight and responsive performance

Negative things

  • 🐛Crashes when selecting catalog groupings (recent)
  • 🐛Keyboard doesn't dismiss after input (iPad issue)
  • 🐛Data loss - observer lists disappearing
  • 🐛Search function missing in recent version
  • ⏱️Lack of developer updates for extended periods
  • 📱Poor iPad optimization and landscape support
  • 🔧Limited to DSOs - no planets, comets, or asteroids
  • 🎨iPad experience suboptimal compared to iPhone
  • 📤No export functionality for observer lists
  • 🌙Moon visualization missing from sky view
  • 🔄No cross-device syncing capability
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What's New in Observer Pro

1.4.1

March 25, 2025

• Basic support for importing and exporting lists of objects • Fixed unable to change the sort mode of object type lists • Fixed Observing List changes not always saved • Other minor enhancements and fixes

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Charts

Top Paid

📉 173-36

Education

This app dropped -36 positions in Education chart.

Last updated on September 8, 2026.

User reviews

Most RecentHighest RatedLowest Rated

A hidden gem

One of my favourite Astro planning apps. So convenient. Super handy for assessing best targets by hours of visibility and for keeping track of favourite or partially imaged objects and their future visibility. Whenever I see an inspiring Hubble or JWST image I open the app and in seconds can check out the galaxy coordinates, size, magnitude and visibility from my site.
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dr_Rodgdr_Rodg

Very, very nice app

Excellent efficient use of space and graphic presentation of information. I particularly like the local obstruction mapping. I was considering developing my own app, but this is better than I could have done.
RightOnTarget1RightOnTarget1

Fantastique !

Outil indispensable pour planifier une soirée d’observation.
Mille mercis au développeur !!!
franck BTZfranck BTZ

Absolutely Essential for Image Planning

I’ve used ObserverPro for years now to determine which imaging targets are feasible from my location and optimal imaging months for each one. Love it!
NH BobNH Bob

Great App

Thank you so much for fixing the sort functions.. This is absolutely my favorite planning app.
Bfisher39Bfisher39
See 115 more reviews

User experience

🐞

Reported Bugs

10 issues

App crashes when selecting catalog groupings (Galaxy, Planetary Nebulae, etc.)

Bug

iOS keyboard doesn't dismiss on iPad after clicking Done

Bug

Observer lists and custom data disappearing after app closure

Bug

Search feature missing in version 1.4

Bug

Continuous crashes since recent updates

Bug

Horizon drawing feature unreliable - drifts while drawing

Bug

Menu items on far right side of screen unresponsive

Bug

Incompatibility with iOS 8 (historical)

Bug

App crashes on startup with certain iOS versions

Bug

Weather feature broken

Bug
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Requested Features

16 requests

iPad native app with landscape mode support

Feature

Search functionality restoration/improvement

Feature

Export observer lists to other apps (Sky Safari, etc.)

Feature

Support for planets, comets, and asteroids

Feature

Observing notes and session logging

Feature

Field of view/scope focal length comparison

Feature

Color object photographs

Feature

Additional catalogs (Sharpless, etc.)

Feature

Moon visibility in sky view

Feature

Azimuth-based sorting for telescope positioning

Feature

Filter options for object types

Feature

Cross-device syncing between iPhone and iPad

Feature

Print functionality for observing plans

Feature

User-created custom catalogs

Feature

Screen auto-rotation support

Feature

Weather forecast integration

Feature

FAQ

What does Observer Pro do?

Observer Pro is designed for advanced astronomy observing and astrophotography planning. It helps users predict object visibility by factoring in local obstructions like trees and mountains, and provides astronomical weather forecasts.

What are the key features of Observer Pro?

Key features include a database of over 14,000 deep sky objects with reference photos, the ability to measure your local horizon profile, unique charts for predicting object visibility, featured object lists, management of favorite observing sites, and integrated 7Timer! weather forecasts.

How much does Observer Pro cost?

Based on the provided information, Observer Pro is a paid application. There are no mentions of in-app purchases or subscription models, indicating a one-time purchase.

Who is Observer Pro for?

This app is for advanced astronomers and astrophotographers who need detailed information and planning tools to make the most of their observing sessions. It is particularly useful for those who want to precisely plan when and where to observe specific celestial objects.

Can I use Observer Pro to find objects to observe?

Yes, Observer Pro includes a 'Featured object' list that shows objects specific to your location and local horizon that are great for observing right now. You can also maintain lists of your favorite objects and an observing list to take with you to the eyepiece.