Free, Interactive Physics Lessons

Over two hundred practice questions and interactive lessons, with step-by-step solutions. Based on the Decipher Physics YouTube Lectures & GCSE Physics.

200+
Questions & Lessons
100%
Free to Use
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Practice alongside the videos

If you’re here from the YouTube channel, this is the companion app. Interactive lessons and practice questions, in a simple interface that’s free on web and iOS. I have also created hundreds of step-by-step practice questions for GCSE physics, which can be found in the Legacy section of the app.

Interactive lessons

Visual, bitesized lessons on topics from the lectures, currently covering capacitance, capacitor energy, and thermodynamics. Each topic has Learn, Practice, and Challenge tiers with diagrams and animations, so you understand the idea before tackling harder questions.

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Legacy GCSE revision

A separate bank of exam-style AQA and Edexcel questions under Legacy. Hundreds of multi-step problems with full worked solutions. Use it when you want past-paper-style practice organised by GCSE topic.

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Different question types

Question types include remembering equations, calculations (includes a built in scientific calculator), multi choice, and filling gaps.

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Progress tracking

XP, topic scores, and completion marks show what you’ve nailed and what you've yet to try.

Want to try it?

Open the web app in your browser, or download on iOS. Either way, it’s free.