Small apps and sites for the part of thinking that goes wrong quietly.

Pluto.Studio is an independent studio. We build Android apps and web products — reference tools that hold a lot of material and stay fast, and thinking tools about judgement, attention, and the gap between how people believe they decide and how they actually do.

One thing at a time, finished properly, then the next.

Web Live

IndieHangar Platform A home for independent Android apps. Browse what small developers are making, volunteer as an early tester, or publish your own app and collect real feedback before it reaches the store. Discovery for players Early testing for developers Free to join

Android Google Play

DnD Nexus Reference A companion for Dungeons & Dragons. Detailed descriptions of spells, magic items and equipment, all available without a connection — built for Dungeon Masters running campaigns and players building characters alike. Spells & items Offline access Free to install Debias Thinking tool A cognitive bias trainer. Learn all 188 biases from the Cognitive Bias Codex, quiz yourself against real scenarios, and keep a reflection log that shows which biases shape your own decisions. 188 biases 18,869 scenarios Free to install Pirate Codex Reference A companion handbook to One Piece. Profiles for every character, a location guide spanning the Four Blues, the Grand Line and the New World, and an encyclopedia of Devil Fruits, Haki and the factions behind them. Works offline. Characters & crews Lore & locations Offline access Fan-made and unofficial. Built from the One Piece Fandom Wiki. Sensor Lab Utility Fifteen tools built on the hardware already in your phone — compass, bubble level, sound and light meters, metal detector, QR scanner — plus a logger that records several sensors at once to CSV. Live data, no invented readings. 15 tools CSV logger Free with ads

ReframeIn testing Thinking tool A structured thought record for cognitive behavioural therapy practice. Currently in closed testing and not yet on Google Play.

How we build Approach

An app should do one thing and then get out of the way.

Most apps in the self-improvement category are built to maximise the time you spend inside them. That incentive produces streaks, badges, and notifications engineered to nag — none of which make anyone think more clearly.

We would rather build something you open deliberately, use for four minutes, and close having actually learned something. Small scope, no account required to start, no engagement mechanics dressed up as features.

Contact Direct

Bug reports and feature requests get read.

There is no support desk and no ticket queue. Email reaches the person who wrote the code, which means fewer canned replies and slower answers at weekends.

studio.pluto.game@gmail.com