Scrubline Space Launch Tracker

A space launch schedule built from what the range reserved. When a rocket launch slips, the next nights are already on the board: Scrubline counts the whole ladder, and Pro times it.

Before a US launch the Coast Guard reserves sea space — a primary window and every backup night behind it — and broadcasts it to shipping, days to weeks ahead. So a scrub does not take a mission off the board: it moves down its ladder, onto a night the range set aside in advance.

Not An Official Source — Where The Information Comes From

Scrubline is an independent app. It is not affiliated with, endorsed by or authorised by any government agency or launch provider, and it does not represent one. It shows a reading of public US government publications, and those publications are the authority:

• Reserved sea space — US Coast Guard Broadcast Notice to Mariners: https://www.navcen.uscg.gov/broadcast-notice-to-mariners
• Airspace restrictions — FAA Temporary Flight Restrictions: https://tfr.faa.gov/
• Pad forecasts — NOAA National Weather Service: https://www.weather.gov/
• Pad elevation — USGS 3D Elevation Program: https://www.usgs.gov/3d-elevation-program

Never navigate by this app and never make a safety decision on it.

Why Every Other Launch Tracker Shows One Time

Nearly every rocket launch tracker is built on the same launch schedule database, which holds one window per launch and no field for a backup. So a mission another app shows as one evening can already be on its second reserved night here. The maritime notices are the other source, and they are perishable: Scrubline reads them as published and keeps what it reads.

What Is On The Board

• Every mission's ladder — the next reserved launch window, and how many backup nights the range reserved behind it
• Reserved launch windows for Florida's Space Coast — Cape Canaveral and Kennedy — plus Vandenberg, Starbase, Wallops and Kodiak
• A live launch countdown to the next reserved window — upcoming rocket launches, not a date somebody guessed
• Precision honesty — when a launch date is no better than "sometime this month", the app says so rather than counting down by the second
• Corroboration per mission: a maritime notice in force, an airspace restriction filed, and the pad forecast
• Can I see it from here — which way to face, and how high the rocket must climb to clear your horizon
• The published record: how this app's own alerts performed, per phone brand, bad rows left in

Launch Alerts That Follow The Ladder

The alarm — an hour out, fifteen minutes out, at window open — is scheduled on your phone, not sent over the internet. It fires with no signal, in airplane mode, at 3am with no bars. When a mission moves down its ladder, Pro rewrites the alarm already sitting there rather than pushing a new one. What Android then does to it is measured rather than promised: Alert Health shows what this device is doing to yours, and which power settings you can fix. Plus a home-screen launch countdown widget.

Scrubline Pro

Free — everything above except the backup times and the scrub rewrite.

Pro — the times on those backup nights: the full ladder, every reserved launch window with its own date and hour; the scrub rewrite; and a lens planner that frames the shot before you stand in the dark.

What This Deliberately Does Not Do

No 3D globe, no astronaut database, no mission patches.

US ranges only. Other countries publish these warnings in formats we have not built for.

Reserved is not attempted. A window passing unused usually means no attempt was made, not a scrub.

Forecasts, not verdicts — the weather is the public forecast for the range at that hour. There is no go/no-go probability yet, on purpose: one with no published calibration invites someone to cancel a booking on it.

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