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Flash Alert (Calls & SMS)

JNDA
Notification Phone & SMS Tools
Version
3.0.2
Size
2.5 MB
Requires
Android API 24+
4.2 / 5 · 6,480 ratings 4 downloads
Download APK

Updated Sep 22, 2026

Quick answer

Blink the terminal when receiving a call, SMS or an application notification

F-Droid repository metadata

Flash Alert turns your camera flash into a powerful visual indicator whenever you receive a call, SMS/MMS, or notification from another app (WhatsApp, social media, etc.).

Key Features: - Customizable flash alerts for calls, messages, and apps. - Contact filtering: enable the flash only for your contacts. - Battery-saver mode: smart deactivation if the phone is face down or if the screen is already on. - Night mode and "Do Not Disturb" override options. - Ambient noise detection (for compatible Android versions).

A lightweight app, privacy-friendly, and completely ad-free.

Screenshots

Flash Alert (Calls & SMS) screenshot 1
Flash Alert (Calls & SMS) screenshot 2
Flash Alert (Calls & SMS) screenshot 3
Flash Alert (Calls & SMS) screenshot 4
Flash Alert (Calls & SMS) screenshot 5
Flash Alert (Calls & SMS) screenshot 6
Flash Alert (Calls & SMS) screenshot 7
Flash Alert (Calls & SMS) screenshot 8
Flash Alert (Calls & SMS) screenshot 9
Flash Alert (Calls & SMS) screenshot 10
Flash Alert (Calls & SMS) screenshot 11

What’s new

- Fixed 1x1 widget shape: replaced distorted oval with a modern Material 3 squircle (#100).
- New 4x1 control bar widget to independently toggle master switch, calls, SMS, and notifications (#101).
- Instant state synchronization across widgets, quick settings tile, and the app.

How to install

  1. Download the APK from the button at the top of this page.
  2. Allow “Install unknown apps” for your browser or file manager only, not for every app.
  3. Open the downloaded file and confirm the installation.
  4. If installation fails with “App not installed,” remove an earlier build of the same app first. A signature conflict is the usual cause.

Data safety

  • Every file is checked against its published SHA-256 before it is listed.
  • Files are scanned for malware on every update.
  • The permissions each app requests are listed on its own page.
  • Read the full safety policy for how we test, flag, and delist files.

Frequently asked questions

What is Flash Alert (Calls & SMS)?
Blink the terminal when receiving a call, SMS or an application notification
Who develops Flash Alert (Calls & SMS)?
Flash Alert (Calls & SMS) is developed by JNDA.
Which Android version does Flash Alert (Calls & SMS) require?
Flash Alert (Calls & SMS) requires Android API 24 or later.
What is the current version of Flash Alert (Calls & SMS)?
The synchronized F-Droid version is 2.9.1.
Which license does Flash Alert (Calls & SMS) use?
The signed F-Droid metadata lists GPL-3.0-only.
Where is the source code for Flash Alert (Calls & SMS)?
https://gitlab.com/jnda/FlashAlert

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