MyObservatory (我的天文台) v5.18.1
APK · 96.1 MB · version code 251 · Android 6.0+ · uploaded Jul 31, 2026
- Signature matches the Google Play version Details
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Answer this to unlock the download. It keeps automated downloaders away.
Compared with the latest version
The latest version is v5.21.1, uploaded Sep 29, 2026 — about 2 months after this one.
- Size: this file is 96.1 MB; the latest is 103.1 MB (6.9 MB larger).
- Both versions request the same permissions.
File information
- Version
- v5.18.1 (251)
- Uploaded
- Jul 31, 2026
- Size
- 96.1 MB
- Requires
- Android 6.0+ (API 23)
- CPU support
- x86 32-bit, x86 64-bit, ARM 32-bit, ARM 64-bit
- Graphics
- OpenGL ES 2.0+
- Screen
- Small screens and larger
- MD5
- 32567535a7157a9b8dba4349a25b3c89
- Signing certificate (SHA-1)
- 88:22:FA:BC:E7:A7:E1:97:66:63:25:46:F5:48:EF:B1:ED:D2:6B:21
- Signed by
- CN=Hong Kong Observatory, OU=Hong Kong Observatory, O=Hong Kong Observatory, L=Hong Kong, ST=Hong Kong, C=HK
- File name
- hko-myobservatory-v1-0-251-75873990-32567535a7157a9b8dba4349a25b3c89.apk
- Package
- hko.MyObservatory_v1_0
- Downloads (all versions)
- 5M+
- Age rating
- PEGI 3 · Everyone
What's new in v5.18.1
v5.18.1:
- Optimize the app and fix bugs.
v5.18:
- Launch “Coastal Sea Level”;
- Optimize the app and fix bugs.
Permissions (12)
This version requests 12 permissions, 4 of them sensitive.
- Approximate location Sensitive android.permission.ACCESS_COARSE_LOCATION
- Location in the background Sensitive android.permission.ACCESS_BACKGROUND_LOCATION
- Precise location Sensitive android.permission.ACCESS_FINE_LOCATION
- Record audio (microphone) Sensitive android.permission.RECORD_AUDIO
- Full network access android.permission.INTERNET
- Internal broadcast protection (app-defined) hko.MyObservatory_v1_0.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
- Prevent the device from sleeping android.permission.WAKE_LOCK
- Receive push notifications com.google.android.c2dm.permission.RECEIVE
- Run at startup android.permission.RECEIVE_BOOT_COMPLETED
- Run foreground services android.permission.FOREGROUND_SERVICE
- Show notifications android.permission.POST_NOTIFICATIONS
- View network connections android.permission.ACCESS_NETWORK_STATE
Security & authenticity
Security rating: Trusted
Signing certificate
- Signature matches the Google Play version Checked by the source store on Jul 31, 2026.
- Certificate issued to “Hong Kong Observatory” This is the certificate of the Google Play version.
- Same certificate as the 5 other versions checked
Store checks
- Developer signature not checked yet Jul 31, 2026
- Validated against Google Play Jul 31, 2026
- Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020
Scans come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (5 other versions compared). AAPKs doesn't scan files itself.
How to install MyObservatory (我的天文台) on Android 6.0+
You'll need about 192.3 MB of free space.
- Download the APK — tap Download APK above (96.1 MB). Chrome shows “File might be harmful” for every APK file; choose Download anyway only if you trust this file.
- Open the file — tap the download notification, or open Files › Downloads and tap hko-myobservatory-v1-0-251-75873990-32567535a7157a9b8dba4349a25b3c89.apk.
- Allow the install (first time only) — Android 8 and later asks for permission the first time an app opens an APK: tap Settings in the prompt, turn on Allow from this source, then go back. Manual path: Settings › Apps › Special app access › Install unknown apps (on Samsung: Settings › Apps › ⋮ › Special access). On Android 7 and older: Settings › Security › Unknown sources.
- Check the file (optional) — the MD5 of the downloaded file should be 32567535a7157a9b8dba4349a25b3c89. If it differs, the file is damaged or was changed: delete it and download again.
- Tap Install — Android asks “Do you want to install this app?”. If Google Play Protect shows a warning, read it before you continue: the source store rated this file Trusted, but only install apps from sources you trust. If an earlier version is installed, this one only installs as an update when it is signed with the same certificate (SHA-1 shown above).
- Open MyObservatory (我的天文台) — tap Open on the install screen, or find it in your app drawer.
Common install problems
- “App not installed” — a version signed with a different certificate, or a newer version, is already installed (Android doesn't allow downgrades). Uninstall it first; back up your data, because uninstalling deletes it.
- “There was a problem parsing the package” — the file is incomplete, or your Android is too old (this version needs Android 6.0+). Download it again, or pick an older version.
- “App not compatible with your device” — this build contains native code for x86 32-bit, x86 64-bit, ARM 32-bit, ARM 64-bit only. Devices with other processors can't install it.
- Blocked by Play Protect — Play Protect checks apps from outside the Play Store. Only continue if you trust the source.