ApexASTRO is the home of SKIESLIVE LLC's Apex astronomy apps — ApexSKY and ApexHUD — at apexastro.app. Sign in with one ApexASTRO account to sync plans, achievements, and membership across apps and the web.

What does ApexSKY do?

ApexSKY is a stargazing and sky-conditions app. It shows aurora and space weather, ISS passes, Best Targets, deep-sky planning tools, and member updates. The core app is free and ad-free.

What does ApexHUD do?

ApexHUD is a planetarium and telescope workflow app for running observing sessions — star charts, session execution, and logs that sync with ApexSKY and your account.

Do I need a separate account for each app?

No. One ApexASTRO account works for ApexSKY, ApexHUD, and your account on skieslive.com. Preferences, target plans, achievements, and membership stay in sync.

Is ApexSKY a good astronomy app for beginners?

Yes. ApexSKY is built for real observing nights with plain-language sky quality, moon phase, aurora outlook, and Best Targets so you know what to look at tonight without reading a full ephemeris.

Does ApexSKY include weather for stargazing?

ApexSKY shows observing-focused sky conditions — cloud cover, hourly trends, moon separation, and space weather — not generic day-to-day weather alone. It helps you decide whether tonight is worth going out.

Is there a free astronomy app without ads?

Yes. The core ApexSKY and ApexHUD apps are free and ad-free on iOS, Android, and Windows. Optional membership unlocks deeper planning and alerts on apexastro.app.

Free, No Ads! ApexSKY & ApexHUD core apps free · optional membership perks

Free astronomy apps · iOS, Android & Windows

Astronomy apps for stargazing,
sky weather & the eyepiece.

ApexSKY is your astronomy app for tonight — stargazing weather, aurora and space weather, ISS passes, and deep-sky targets matched to your sky. ApexHUD runs the session at the eyepiece with a planetarium view and telescope tools. One free account keeps plans, logs, achievements, and membership in sync on the web and in the field.

Why get the apps

Built for real observing nights

SkiesLIVE LLC builds Apex from our own observatory workflow — not generic weather widgets. The core apps are free and ad-free; optional membership unlocks deeper planning and alerts.

Know before you go Tonight’s sky quality, cloud trends, moon phase, and Bortle-aware context so you don’t waste a clear night on the wrong target — or a cloudy one in the car.
Alerts that matter Aurora, geomagnetic activity, and pass notifications tuned to your locations — push when conditions actually change, not noise.
Plan → execute → log Build a target list and session plan in ApexSKY, then hand off to ApexHUD at the telescope. Observation logs and favorites sync through your account.
Best Targets, not random lists Curated deep-sky suggestions for your latitude, season, and gear — including member picks from the SkiesLIVE community.
One account everywhere Sign in once on phone, tablet, or Windows. Preferences, achievements, support tickets, and membership follow you across Apex apps and apexastro.app.
No ads in the core experience The stargazing essentials stay free. We’d rather you spend the night under stars than scrolling banners.

Compare ApexSKY & ApexHUD Create free account

Apex astronomy apps

ApexSKY & ApexHUD — two apps, one sky

Available now

ApexSKY

Your pre-trip command center — live sky conditions, aurora and Kp alerts, ISS and satellite passes, Best Targets for your gear, deep-sky planning, and member updates. iOS, Android, and Windows.

App Store Google Play Microsoft Store

Open ApexSKY

Coming soon

ApexHUD

At the telescope — full-screen planetarium, star charts aligned to your mount, session runner, and observation logs that sync back to ApexSKY and your account.

Preview ApexHUD

FAQ

ApexASTRO & the Apex apps

What is ApexASTRO?: ApexASTRO is the official site for SKIESLIVE LLC’s Apex astronomy apps at apexastro.app — ApexSKY and ApexHUD. Use one ApexASTRO account for apps, web, and membership.
Is ApexSKY free?: Yes — the core ApexSKY stargazing experience is free and ad-free. Optional membership on apexastro.app unlocks additional features.
How do ApexSKY and ApexHUD work together?: Plan targets and check conditions in ApexSKY, then run the session in ApexHUD’s planetarium and telescope tools. Plans and logs sync through your account.
Is ApexSKY good for beginner astronomers?: Yes. ApexSKY uses plain-language sky quality, moon phase, aurora outlook, and Best Targets so you know what to look at tonight without reading a full ephemeris.
Does ApexSKY include weather for stargazing?: ApexSKY shows observing-focused conditions — cloud cover, hourly trends, moon separation, and space weather — to help you decide whether tonight is worth going out.
Is there a free astronomy app without ads?: Yes. Core ApexSKY and ApexHUD are free and ad-free on iOS, Android, and Windows. Optional membership unlocks deeper planning and alerts.

Connected platform

One account across apps and web

Preferences, target plans, achievements, membership, and support tickets sync through the ApexASTRO API — save in the app, pick up on the web, and vice versa.

SkiesLIVE community All apps

Astronomy apps for stargazing, sky weather & the eyepiece.