Hello Counter — simple Flipper Zero app

What it is

• A tiny example Flipper Zero application that displays a counter.
• Increment with A/right, decrement with B/left (mappings depend on your device/firmware).
• Long-press Back to exit.

Files

• hello_counter.c — main source file
• manifest.json — app metadata
• README.md — this file

How to install & build

1. Clone the official firmware (if you haven't already):

   git clone https://github.com/flipperdevices/flipperzero-firmware.git
   

2. Copy this folder into the firmware's applications_user directory:

   cp -r hello_counter flipperzero-firmware/applications_user/
   

3. Build the firmware using the repository's build tool. The firmware repo typically includes an fbt script:

   cd flipperzero-firmware
   ./fbt
   

   Or follow the official build instructions for your OS found in the firmware repo README.

4. Flash the produced firmware to your Flipper Zero following the firmware repo instructions (use qflipper or the CLI flash steps mentioned in the firmware docs).

Notes & tips

• The Furi/GUI API evolves. If your build fails with missing symbols or different function names, inspect the firmware's applications examples to adapt:
  • header locations might be gui/view_port.h vs gui/gui.h or similar.
  • input key constants may differ; check input.h in your firmware tree.
• If you prefer the app to be a standalone package (not part of firmware), look up "Flipper Zero user applications" in the firmware docs — the process is the same: put your app under applications_user and build.
• The entry function name (hello_counter_app here) can be adapted if your firmware expects a specific symbol (some templates use main or app_main). If the build system or loader complains, rename the function to match your firmware's examples.

That's it — a tiny interactive example to get you started. If you want:

• a different app idea (IR remote, simple NFC tag viewer, radio scanner stub),
• or a version that uses a menu or persistent storage, tell me which and I'll extend this into that direction and adjust it to a specific SDK version.