PathStem app icon
Android Coming soon

One clear path through
math, physics & CS

PathStem turns math, physics, and computer science into connected roadmaps, with 362 in-depth topics, hands-on projects, and practice that adapts to what you get wrong.

Pick a roadmap built around a real skill, or explore freely. Spaced repetition keeps what you learn from fading.

Coming soon to Google Play ← All apps
PathStem: Math, Physics, Computer Science
362
In-Depth Topics
18,000+
Practice Questions
46
Hands-On Projects
15
Roadmaps

What's coming

Built for understanding, not memorization

Every part of PathStem is designed so you see the idea, work with it, and still remember it next month.

🧠
FSRS Spaced Repetition
Topics resurface right before you would forget them, and your review schedule adapts to how well you actually remember each one.
📚
362 Topics, Explained Properly
Every topic walks through a starting question, the core idea, a diagram, a precise definition, a worked example, and common misconceptions.
🎯
18,000+ Practice Questions
Roughly 50 quiz questions per topic, so there is always another angle to test your understanding from.
🛠️
46 Hands-On Projects
Build things like a figure-skater angular momentum simulator. Follow real steps, then check your own result.
🗺️
15 Themed Roadmaps
Each roadmap sequences math, physics, and CS topics around a real skill, foundations first. Or explore every topic freely.
🔥
Streaks & Daily Challenge
One focused question a day keeps your streak going, and the Review tab shows exactly what is due today.

Roadmaps

15 paths, each built around a real skill

Topics are sequenced the way a real course would, foundations first and advanced ideas later.

App preview

A first look

PathStem topic page starting with a question about ancient mathematicians and infinity PathStem topic visualization of a sunflower seed arrangement PathStem hands-on project: figure-skater angular momentum simulator PathStem review screen with topics due for spaced repetition PathStem practice quiz question on the Fibonacci sequence PathStem home screen with roadmap, streak, and daily challenge

FAQ

Common questions

What is PathStem?
A STEM learning app that connects math, physics, and computer science into guided roadmaps, with 362 in-depth topics, 18,000+ practice questions, 46 hands-on projects, and spaced repetition so the material sticks.
Is PathStem free?
PathStem is planned to be free on Android, with a one-time Premium purchase to remove ads. There is no subscription.
When is PathStem launching?
PathStem is almost ready for Google Play. This page will be updated with a download link once it is live, so check back soon.
Who is PathStem for?
Students working through AP Physics, SAT math, or college-level math and physics, and self-learners picking up computer science fundamentals outside a classroom. Anyone who wants a structured, visual, hands-on alternative to scattered videos and disconnected practice sites.
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