Nebula HDR screensaver is an open-source (GPL-3.0-only) Android app by Jordan Adema. The APK we host is 205 KB, it needs Android 5.0 or newer, and it declares no permissions at all.
The file on this page is Nebula HDR screensaver 4.12.0, 205 KB, and it installs on Android 5.0 and newer.
We compared the signing certificate of this build with the certificate recorded the first time com.jordanadema.nebula entered the site, and published both the file's SHA-256 and the certificate's fingerprint above so you can check the download yourself. That comparison says the file was not repackaged by someone else; it is not a review of what the app does.
The manifest declares no permissions at all.
Its licence is GPL-3.0-only. We took this build from F-Droid, and the source for this exact version is linked below.
We do not show a star rating or an install count for this page: we have no measured figure for either, and a number we cannot source is worth less than an empty field.
- Version
- 4.12.0
- Size
- 205 KB
- Requires Android
- API 21
- Package
- com.jordanadema.nebula
- Signature checked on
- Sep 17, 2026
- Where this file came from
- F-Droid
- Licence
- GPL-3.0-only
- Source code
- Source for this version
File SHA-256: 923d783c5d3b476ad92b4dfb16bb7a45081bb1d4fad1fb9131afcd7276a169c2
Signing certificate (SHA-256): 878ec6cee21525482bd880c97bde14e1be71a27d581502f7326457daf6693639
We check that this file carries the same signing certificate as earlier releases of the same package. That shows the APK was not repackaged by someone else — it is not a security review of the app.
Screenshots
