Skymag is a planetarium software with high usability and informativeness.
It is designed especially for use with bigger screens and binoculars or telescopes, naked eyes too.

Features:

− zoomable from 0.5x to 1024x

− 275.000 stars up to 10 magnitudo

− 4.400 deep sky objects (galaxies, nebulae and other) up to 13 magnitudo

− more than 500 pictures of nebulae

− 305 millions stars up to 18 magnitudo downloadable from internet (Gaia catalog, above 64x zoom, partially paid in-app supplement)

− real pictures of the sky downloadable from internet (SDSS database, above 64x zoom)

− 73.000 galaxies up to 19.8 magnitudo downloadable from internet (PGC catalog, above 64x zoom)

− all variable stars brighter than 9 magnitudo with amplitude exceeding 0.5 magnitudo

− all double stars brighter than 9 magnitudo with separation exceeding 0.5"

− accurate positions of the Sun, Moon and planets

− moons of Jupiter and Saturn

− all asteroids brighter than 10 magnitudo

− all dwarf planets despite their brightness

− all meteor showers

− all bright artificial satellites

− all discovered comets brighter than 10 magnitudo

− easily set date of observation between 1 and 4000 year AD

− paths of all Solar System objects up to 360 days

− 3D projection of Solar System with planetary motions, nearby stars with proper motions (up to 170 light years), Milky Way with surroundings and The Local Supercluster (up to 98 million light years)

− genuine Almanac with most major and minor astronomical events between 1 and 4000 year AD with notifications (offline)

− Almanac with passes of bright artificial satellites with notifications (online, partially paid in-app supplement)

− Almanac with transits of bright artificial satellites on Sun and Moon with notifications (online, paid in-app supplement)

− additional Almanac for selected objects from catalogs

− long press to reveal object's details

− 23.000 Wikipedia articles with pictures and searchable dictionary (offline, partially paid in-app supplement)

− solar and lunar analemma that can be set to a selected moment (offline, paid in-app supplement)

− times of rising, transiting and setting of all objects

− night (red) mode with brightness adjustment

− atlas mode, like paper one

− catalogs of all objects with search functionality (click and go to)

− pointing at sky using device sensors

− GPS positioning, manually either (remember to set up it first)

− even more

Hints:

− touch coordinates to change them, touch scale number to return to 1x, touch 'AUTO' button to use sensors

− size of downloaded data can vary between 10KB to 8MB per request (average ~200KB). Downloading and viewing additional fields can be done above scale 64x by pressing 'SkyView', 'gaia' and 'Galaxies' buttons

− when you change location, remember to set time zone by pressing button beneath

− some astronomical events from Almanac like Sun eclipses with Moon and inner planets may differ several minutes depends on geographic location, single-check with map should help

− to capture satellites transits on Sun and Moon, make sure downloaded orbital elements are no older than 2 weeks

− in App permissions allow Notifications, uncheck 'Pause app activity if unused' and turn off battery optimization for that app. Some manufacturers are blocking local offline notifications, then app must be in foreground/background