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Nightblast

GitHub dubsterdev/nightblast

Install Nightblast

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Download
QR code for zapstore.dev/download
  • Scan the code with your phone’s camera
  • Tap Download anyway if the browser warns about the file
  • Allow your browser to install unknown apps if Android asks
  • Open Zapstore and finish the onboarding

Open Nightblast in Zapstore

Open
QR code to open Nightblast in Zapstore
  • Scan the code to open Nightblast in Zapstore, or search for it there
  • Tap Install, and Download if Zapstore asks you to confirm the developer
  • Confirm in Android’s install dialog. Allow Zapstore to install unknown apps if Android asks

Unclaimed app

The catalog lists Nightblast from GitHub dubsterdev/nightblast and signs its releases. The developer has not claimed it. The file is still checked before you install it.

Are you the developer? Cryptographically prove you hold the key that signs it.

How trust works

With the app, you can send urgent alerts to your contacts using encrypted SMS messages, with vibrations and optional sounds.

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 and write your message. Then tap the send icon.

Nightblast encrypts your message and sends it to the selected recipients over SMS. When Nightblast receives the alert on the recipient's phone, it displays an alert dialog and vibrates the device.

If you selected Sounds and vibrations, Nightblast will play a loud sound using the Alarms audio channel, using whatever volume your phone is set to for alarms, and, if your phone is configured to let alarms break through do not disturb, you'll hear it even if do not disturb is enabled.

Disclaimer:

Nightblast uses SMS messages to communicate between devices. If your carrier charges for SMS messages, using Nightblast may incur additional charges or use your texting quota.

Connecting with another contact uses up to 12 SMS messages, and sending an alert can use up to 6 SMS messages.

Summary generated by Zapstore from source.

Original description, as the developer published it.

Zap Nightblast

Zapping anonymously. Sign in to zap with your identity.

No developer has verified this app yet, so sats go to npub1gnwq4…thdn3y, the catalog that brought it to you.

Amount in sats

Latest release

Oct 9, 2026

Unclaimed app No Google servicesWorks offlineSource available · GPL-3.0-or-later

The catalog lists this app from GitHub dubsterdev/nightblast and signs its releases. The developer has not claimed it. Are you the developer? Claim your app

System alert window access has no shown use.

Permissions

ContactsReceive SMSSend SMSOverlay What they allow
  • Contacts READ_CONTACTS Read and change your contacts To list recipient names and numbers.
  • Receive SMS RECEIVE_SMS Receive text messages To get incoming alert messages.
  • Send SMS SEND_SMS Send text messages To send outgoing alert messages.
  • Overlay SYSTEM_ALERT_WINDOW Draw over other apps Has no shown use.

Reads contacts to list recipients. Sends and receives SMS messages for encrypted alerts.

Release notes

Fixed an issue that allowed an attacker to send the same key twice and mark it as verified, even though it changed

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Get Nightblast the private way

Updates checked on your device, and every release verified before it installs.

Get Zapstore for Android

  1. Tap Download APK below.Scan the code with your Android phone’s camera.
  2. If Android asks, allow your browser to install unknown apps.
  3. Open Zapstore and finish the onboarding.
Download APK

v2.0.4 · 71.2 MB · Android 10+

Verify the download

On a computer, run shasum -a 256 <the file you downloaded>. It should print: b13e01319fecf0b3ba1fd60132758bd0fa08a235836c52d44fddb412cf1b7137

If you have zsp, Zapstore’s publishing tool, zsp utils extract-apk <the file you downloaded> works too. Its hash should be the same SHA-256: b13e01319fecf0b3ba1fd60132758bd0fa08a235836c52d44fddb412cf1b7137

On the phone, AppVerifier should show this signing certificate: 99e33b0c2d07e75fcd9df7e40e886646ff667e3aa6648e1a1160b036cf2b9320

Source code All releases and notes

Get zsp

  1. Download the file for your computer.
  2. Make it executable and put it on your PATH.
  3. In your project folder, run zsp.

Have Go? This does the same:

go install github.com/zapstore/zsp/v2/cmd/zsp@latest
macOS, Apple silicon Linux, x86-64 Linux, arm64

v2.0.1 · macOS and Linux

Verify the download

On your computer, run shasum -a 256 <the file you downloaded>. It should print the SHA-256 for the one you chose.

macOS, Apple silicon · 18.6 MB 99018fb9744e5ace2b44557550dc333496239912c0e9b1137266d4922c803346

Linux, x86-64 · 23.8 MB 1ef5373f8ecd9ba63d2c3fab98abb0d31b2244a2aac31b3749fb205c7d5f5b38

Linux, arm64 · 22.1 MB e421005ee47cba58293dce4277bb784e4cfe706dbbcb8617d671629d0238be18

Source code All releases and notes