The Workshop of Forgotten Sounds
A repair puzzle
Observe the silent machines, and bring their sound back.
One-time purchase · No in-app purchases · No ads

Grandfather's letter
Before the house is let go, please listen, just once more, to the sound of this house.
A month had passed since Grandfather died. Before the house was let go, a letter arrived. On a winter day long ago, a song had been playing somewhere in this house. Now the house has fallen completely silent. One by one, you mend what has stopped.
How to play
There are no instructions. Your clues are how the machines move, and the marks left on them.
Observe
Look around each room and machine. Collect clues from engraved marks, numbers, and notes left behind.
Test
Swap parts and set the machine running. How it reacts reveals what is broken and the rules it follows.
Repair
Fix it correctly, and the stopped machine plays its sound once more.
Inside the workshop






Features
Ten repair puzzles
Easy, medium, and hard. No knowledge of music or electronics needed.
Solvable without text
Designed so you can discover the rules from how things move when you try them.
Three-step hints
Where to look, how it works, which way to go. Pick the depth you want, with no waiting and no charge.
Pick up where you left off
Progress saves automatically, so you can continue next time.
Plays offline
Works without a connection and collects no data about you.
Japanese and English
Switch languages at any time in the app.
App information
- Price
- One-time purchase (at the price shown in the store). No in-app purchases or ads
- Requirements
- iPhone and iPad with iOS 15.0 or later; Android 8.0 or later
- Languages
- Japanese, English
- Developer
- Gadget Recipe LLC
Support
For questions or bug reports, please use our app contact form (in Japanese) or email app-info@gadget-recipe.com.