Penta is a five-disc CD changer for the iPhone Duo. Load five albums, press the button and the tray rotates with the whirr and clunk of the real thing, because John Seubert recorded all of it off his dad's actual player, which his dad handed over for the project. Fold the Duo and the phone becomes the jewel case. He's working on skins so it can look like whichever changer you grew up with, and it's free on iPhone, iPad and Duo.

Many Displays puts your windows back where they were. Martín Acuña Lledó has two identical LG 4K monitors that swapped places every time his Mac slept and piled every window onto one of them, and the reason is that identical monitors often ship with the same EDID serial, so macOS genuinely cannot tell them apart. Many Displays separates them by system UUID and then by physical port, fixes the arrangement before it touches anything else, and reads the window server's own list rather than asking each app, which takes about 20ms for hundreds of windows. Nineteen dollars once, source on GitHub.

How It Went builds a film of your trip out of the GPS track. The route draws itself across a tilted map, photos appear where you took them, clips play where they were shot, and distance and the passes you crossed arrive as captions. Herbert Poul rides multi-day bikepacking trips and kept getting home with photos, action cam clips, drone footage and a Garmin file nobody was ever going to scroll. An action cam that was never set to local time puts your lunch stop in the wrong valley, so you fix the clock once per camera and every shot from it moves together.