Ember Sky Log

Ember Sky Log is a private observation journal for amateur astronomers. Record what you saw, when you saw it, and the conditions that shaped the night—planets, the Moon, stars, comets, deep-sky objects, and your own custom targets.

Whether you observe with binoculars, a small refractor, or a club telescope, Ember Sky Log keeps your sessions organized in one calm, offline logbook on your iPhone.

LOG OBSERVATIONS QUICKLY Add an entry in the field with date, visibility rating, sky conditions, equipment, notes, tags, moon phase, and session duration. Edit or review any observation at any time.

CATALOG CELESTIAL OBJECTS Browse a built-in catalog of planets, stars, comets, and deep-sky targets. Mark favorites for repeat viewing and create custom objects for anything not in the list.

MANAGE YOUR GEAR Keep a personal equipment list—binoculars, scopes, eyepieces, and mounts—and attach the right setup to each observation.

REVIEW YOUR HISTORY Filter past sessions by object type, date range, visibility, and favorites. Find that Jupiter sighting from last spring or every comet you have logged.

TRACK YOUR PROGRESS The dashboard summarizes your activity at a glance. Insights show observation counts, nights out, time logged, visibility trends, and your most-watched object types.

EXPORT YOUR LOG Share a plain-text copy of your observations for backup or personal records.

PRIVATE AND OFFLINE No account required. No ads. No in-app purchases. No tracking. Your data stays on your iPhone.

Ember Sky Log is a personal journal—not a planetarium, weather service, or navigation tool. It does not provide live astronomical calculations or official visibility forecasts.