Fold the on-screen model to join a route of pipes, then hear the notes in order.
TuneTunnel combines three pipe shapes and five notes, each also marked by a different shape. Explore six puzzles or build freely with up to eight pipes. Save twelve compositions and return to the current route later.
Sound begins muted; turn it on when you want to listen. Grown-up settings offer an optional play duration. Pause or leave whenever you need.
The current app uses a virtual model on non-folding iPhone as well. Live hardware hinge input is unavailable in this version. No ads, in-app purchases, external data transmission, camera or microphone.