Observer Pro vs Dark Sky Meter Pro

Observer Pro is an indispensable app for advanced astronomy observing and astrophotography planning. No more guessing when that galaxy emerges from behind that tree. No more estimating how many hours you'll be able to image an object. Observer Pro gives every astronomer the info they need to make the most of their observing right at their fingertips! What astronomers are saying: "Every astronomer with an iPhone should own this app!" - Astronomy Technology Today magazine "Observer Pro is the most impressive astronomy app that I have tried out. I enthusiastically commend it to you!" - Tom Mote, Professor Emeritus, Astronomy "I have been using it since the day it first became available and I cannot live without it now." - Sedat B., Cloudy Nights forum Feature highlights: • Over 14,000 deep sky objects included, all with closeup reference photos. No need to download anything after install! Sorting and search make it easy to sift through all of them to find which objects belong on your observing list. • Measure your local horizon profile in minutes with your iPhone. • Unique charts completely take the guesswork out of predicting object visibility. Your house, trees, mountains, or any other obstructions are completely factored in to all visibility charts. • New to astronomy? The Featured object list shows a list of objects specific to your location and local horizon that are great for observing right now. • Keep a list of your favorite observing sites, each with their own local horizon profile. Compare object visibility between sites to find the best spot to setup your scope. • There's a lot to observe! Observer Pro gives you a place to maintain a list of your favorite objects as well as an observing list that you can take with you to the eyepiece. • 7Timer! astronomical weather forecasts for your observing sites are viewable without leaving Observer Pro. They give you the outlook on cloud cover, seeing, transparency, and more. • Check out the in-app help to learn more about how to use the many features that come with Observer Pro. Keep up-to-date with the latest news at the Observer Pro blog: http://observer.pro/blog

Dark Sky Meter Pro turns your iPhone’s camera into a sky brightness meter. Point at the night sky to get scientific readings in SQM (magnitudes per square arcsecond) and Bortle scale, plus NELM (naked-eye limiting magnitude) and an estimate of visible stars—so you can track light pollution and compare sites. Measure One-tap measurement: cover the lens for a dark frame, then point at the sky. Results in seconds. Device-specific calibration (zero point) for better accuracy; optional FOV setting (default 20° for SQM-style comparison). Readings include location and time for your records. My Data Save measurements locally and, with Sign in with Apple, sync across your devices. Export to CSV for analysis or sharing. Review history with SQM, Bortle, NELM, and location. Clouds Simple cloud forecast for your location so you can plan when to go out. Map See your (and optionally others’) measurements on a map to compare sky quality by place. Info Sunrise, sunset, and darkness window; moon phase, moonrise, and moonset for your location. Built for stargazers, astrophotographers, researchers, and anyone curious about light pollution and dark skies. No extra hardware—just your iPhone.