Is Nightblast safe?

With Nightblast, you can send urgent alerts to your contacts using encrypted SMS messages, with vibrations and optional sounds. How it works: When you connect with another Nightblast user, your phones exchange encryption keys. After you've exchanged keys, you can send encrypted alerts to each other. Just select contacts in the Recipients section, choose Just vibrations or Sounds and vibrations an…

Developer: DubsterDev
Category: Emergency Action
Earliest archived version: 12 Oct 2026
License: GPL-3.0-or-later (per F-Droid metadata)

02 / Package identity

Technical fingerprint

Application IDcom.hazelhope.dubster.nightblast

Latest APK SHA-25688112e25473bbb9e99981c75ab91f30a4d1d82cad6f4463266eb48e67bc32586

Signing certificateE2:04:02:A2:A1:33:23:4E:29:1F:BF:7D:96:2E:3A:9A:09:2C:68:A6:7B:DB:AF:DC:E6:51:0C:AA:01:4F:C2:FA

MIN ANDROID24TARGET37ARCHITECTUREarm64-v8a · armeabi-v7a · x86 · x86_64

03 / Version archive

Documented releases

1 TOTAL

VersionReleasedAndroidArchitecture

1.0.612 Oct 202624+arm64-v8a, armeabi-v7a, x86, x86_64→

04 / Safety & access

Safety verdict

Authentic — file hash matches the source indexNo ads or tracking flagged by the source

IntegritySHA-256 verified vs source

SourceOpen-source · fdroid

Permissions6 declared · 4 sensitive

Signaturepresent

Anti-featuresNo known anti-features

Sensitive accessREAD_CONTACTSRECEIVE_SMSSEND_SMSSYSTEM_ALERT_WINDOW

Declared permissions

android.permission.READ_CONTACTS android.permission.RECEIVE_SMS android.permission.SEND_SMS android.permission.SYSTEM_ALERT_WINDOW android.permission.VIBRATE com.hazelhope.dubster.nightblast.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

Tracker status: Not assessed by WIKI for Android.

05 / Sources

Evidence ledger

Each entry is a captured public reference backing this record.

RepositorySource package page↗Source codeSource repository↗