Plan, shoot and log your nights under dark skies
DarkSkyTools is the complete astrophotography companion — a live planetarium with AR, Milky Way planning, session logging, astro weather, equipment matching and much more.
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24 professional tools, one dark-sky companion — explore DarkSkyTools.
Every tool an astrophotographer needs
25 professional tools in one app — plan, shoot, log and analyse your nights under the stars.
SIMBAD Extended Search
Complete target searches across 15,000,000+ objects via the SIMBAD database (CDS Strasbourg) — stars, exoplanet hosts, quasars and faint galaxies — backed by a 40,000+ object local database (stars + deep-sky) for offline searching.
DarkSky Live Planetarium
A blazing-fast native sky map with 40,000+ stars, DSOs, planets, ISS, comets and a photographic Milky Way — plus full AR camera mode with star identification. Go To any target and its photo fills the framing panel so you can compose your shot before you shoot.
Milky Way Planner & Map
Plan galactic-core shots with rise/set times, season calendar, NPF exposure maths and an interactive Milky Way sky map.
Session Logging
Log every imaging session — target, exposures per filter, calibration frames, guiding RMS, weather, moon and gear.
Session Planning
Build complete multi-target imaging plans with weather, lunar and visibility forecasts, then convert them to sessions.
Analytics & Tasks
Integration-time charts, target breakdowns and a kanban task board to keep your projects moving.
Equipment Profiles
Telescopes, cameras, guide cams and eyepieces — with FOV matching against every target in the catalogue.
Astro Weather Forecast
Hour-by-hour cloud, seeing, transparency and dew-point forecasts for your exact imaging site — plus a Best Night Ahead card that ranks the next five nights so you know which evening to plan for.
3D Lunar Calendar
A full 8K interactive 3D Moon globe, phase calendar, rise/set times and libration details.
Light Pollution Map
World Bortle-scale heatmap with site readings — find truly dark skies near you.
Dark Site Library
Save and rate your dark-sky locations with sky-quality data and moonlight forecasts.
Tonight's Best
Auto-ranked list of the best targets for your sky, gear and conditions — tonight. Filter by magnitude, altitude, constellation, catalogue, or just your own wishlist.
Aurora Visibility
Live Kp index, aurora oval and visibility alerts for both hemispheres.
Twilight & Sun Times
Civil, nautical and astronomical twilight — know exactly when true dark begins.
Polar Finder & Compass
AR polar-alignment finder, sensor-fused compass and 3D inclinometer for perfect mount setup.
Exposure & NPF Calculators
NPF rule, 500 rule, sub-exposure and timelapse calculators built for astro work — with saved rig presets and seeing-matched sampling and binning advice.
ISS, Comets & Meteors
Track the ISS and major satellites live, plus comets, bright asteroids and meteor-shower radiants.
Target Search & Suggester
Search the full NGC/IC/Messier catalogue and get Equipment-matched targets for your field of view.
Night Events Calendar
Eclipses, conjunctions, oppositions and meteor showers — years ahead.
Sun & Planets 3D
A native 3D solar system with live planet positions, facts and imagery.
Gallery & Projects
A private on-device image gallery — connect a folder on your phone, import JPEG/PNG/TIFF images and tag them by target, type and session date. Plus projects with total integration per target.
Timelapse Calculator
Frames, interval, clip length and storage — planned in seconds.
Import Capture Logs
Import session data from ASIAIR, NINA, CSV and JSON logs straight into a new session.
Offline Mode
Download forecasts and data for remote dark sites with zero signal — anything you save offline queues on the device and uploads itself, with a live sync indicator so nothing is ever lost.
Share
Share Sessions, Plans and Images to your social media or other users.
9 Languages
English, Spanish, French, German, Italian, Japanese, Korean, Chinese and Hindi.
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Simple pricing, serious tools
Start with a 7-day free trial — cancel anytime before it ends and pay nothing.
Monthly
$4.99/month
7-day free trial included
Yearly
$44.99/year
7-day free trial included
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Prices in USD. Recurring plans include a 7-day free trial; your card is only charged when the trial ends. Manage or cancel anytime from your account.