Mobile Observatory v4.7.5 MOD APK
AppseducationBy Wolfgang Zima—186+4.8
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Before you install
- When Android refuses the install, it is the unknown-sources guard doing it. Grant this app permission in Settings, then confirm the install when the prompt comes back.
- An "incompatible version" message usually means the build was compiled for the older ARMv7 processors that recent phones no longer accept. Look for the ARM64 (ARMv8) build of the same version instead.
Download FAQs
What is Mobile Observatory used for?
Mobile Observatory helps you plan astronomy observations from your location. It includes sky views, celestial-event predictions, deep-sky catalogs, alerts, and an observing planner that creates target lists for the night.
What does the MOD change in this build?
This is the original build, with no MOD feature change stated. It is the paid version of Mobile Observatory, with the astronomy toolkit available through a one-time purchase and no subscription.
How does the Observing Plan Generator choose objects?
The Observing Plan Generator uses your equipment, location, date, light-pollution level, and minimum altitude. It supports planning for naked-eye observing, binoculars, and telescopes.
Can Mobile Observatory control a telescope?
Mobile Observatory can connect to computerized telescopes through LX200, NexStar, or INDI. You can browse objects in the app and send GoTo commands, and telescope control works with the Observing Plan Generator.
What Android version is needed for Mobile Observatory?
Mobile Observatory requires Android 8.0 or later to install. The listed version is 4.7.5, whose release notes mention bug fixes and stability improvements.
Nothing happens when I tap download
Refresh the page and start again — each link is signed for one visit and stops working after that. If it keeps failing, the file is probably being swapped for a newer build; give it a few minutes.
Android says "App not installed"
Usually there is already a copy of the same app on the phone, signed by someone else. Remove that copy first, then install this file — and back up anything you care about inside the app beforehand, because uninstalling wipes it.
