Ragnarius

Welcome! You may also like to visit croobie.com for iPad/iPhone apps.

School Tool & Teach Tech

Breadboard Circuit Simulator

A simulator of a digital electronics project board. Insert ICs, resistors, switches and LEDs, and watch the circuit come alive.

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DALGO Tree

Explore and animate search trees — an important data structure in computer science.

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DALGO Heap

Explore the heap data structure — used in priority queues and heap sort — with step-by-step animation.

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Other Mac-Apps

Positional Encoding

An educational tool exploring the sin/cos encoding from the paper Attention is All You Need.

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InsperaX

For teachers using Inspera for online exams. Scrutinize results with histograms and bar charts.

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iPhone Favorites

Pills Ping

For people who take medication. With this app, you'll never forget to take your medication, and you'll always feel confident that you've taken it! The app's essential features have been shaped by the input of many people who take medication every day.

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🔒 Privacy Policy

Our tools do not collect any data.