
Lathoa teaches critical thinking to children aged 10 to 14. Errol, a robot powered by real AI, solves math problems step by step and always gets something wrong. The child's job is to find the bad step, explain why it breaks, and earn detective ranks. The idea is to train the one skill AI can't hand them: not taking answers on trust. There is a free start and a section for parents.

Students spend hours turning lecture notes, PDFs, and study material into questions and flashcards before they can actually start studying. StudyDeck lets students upload their own notes or study materials and automatically generates flashcards, quizzes, and mock exams from them. I’m building this for university and college students who want to study more efficiently using their own course material. I want to validate whether students actually want this workflow, which features they find most useful, and whether they would pay for it.

An app which allows you to select a route based on a set of filters. Built by people who enjoy driving, for those who drive. Built for whom the drive is the point, not the arrival. Weekend riders looking for a road they haven't done, people new to a city wanting the one their local club already knows, riders who want a record of what they've driven. Built as a PWA, can be installed on your phone directly from your browser.

Dental Scope is a free interactive 3D model of dental anatomy for students and educators. It covers all 32 permanent teeth with FDI, Universal and Palmer numbering, from enamel and dentin to root canals, plus the jaws, joints, nerves, arteries and muscles of mastication. You can toggle layers, search structures, and switch between front, side, top and occlusal views, with fixed or free orbit around the model.

Scissor is a free graphics editor for vector and pixel work that runs entirely in the browser, with no install, no account and no upload of your files. It has the tools designers expect: selection, pen, type, shapes, paintbrush, gradients, transforms, layers, multiple boards and grids, with keyboard shortcuts and a command palette. The interface is available in more than a dozen languages.

Ledge is a Markdown notes app where the code blocks run. Write a shell command, code, a SQL query or an AI prompt in a note, run it in place, and the output streams in right beneath it, so your notes double as working runbooks. Notes live in workspaces with profiles for keys and database URLs, which makes it handy for API scratchpads, weekly checks and operations notes. It is free and open source, for Mac, Linux, Windows, iPhone and Android.

Tiny AI Arena pits AI models against each other in game matches and keeps an Elo leaderboard of the results, with wins, kills, damage and average placing for each model. Every finished match has a replay you can watch, so you can see how different models actually play rather than just reading benchmark scores.