Hiramie
Looks right the moment you open it.
A video player that recognizes the format of videos shot for VR on its own, so you can watch them as they are, without a headset. It handles 180° / 360°, fisheye and stereoscopic video.
Trust Delta Apps
Apps for the problems you thought only you had.
Apps
last-visit
Is it okay to go back yet? The map tells you in color.
A record of the shops you’ve visited that colors each one on a map by how long it’s been since your last visit. Recent visits are red, places you haven’t been to in a while are green, so you can tell at a glance whether it’s okay to go back. Currently available in Japan only, in Japanese.
Tekipaki Timer
The sound tells you which dish is ready, so you don’t have to look.
A kitchen timer with a different alarm sound for each cooking method, so you can keep several dishes going at once without losing track.
About the studio
trust-delta
It always starts with something that bothers me. I search, and there’s no app for it. Some come close, but each is a little off. Someone else is surely stuck in the same place, and general-purpose apps don’t reach it. So I make one and publish it.
Trust Delta Apps is a one-person studio in Japan, handling everything from planning and design to development and running the service. Not flashy, but truly useful to the people who need it. Honest about how data is handled. Small apps you can trust, made carefully, one at a time.
Posts on X and note are in Japanese.