Side by side
Polymath vs Principia
Both stand on math learning apps. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan iPhoneWeb
Visit Polymath Free plan AndroidiPhoneMac
Principia offers a structured mathematics curriculum with visual, step-by-step lessons and a free starting tier. Learners needing the complete sequence must choose a paid monthly or annual plan.
Visit PrincipiaThe facts
| Polymath | Principia | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | iPhone, Web | Android, iPhone, Mac |
| Lowest paid plan | Free or on request | Principia Pro Annual: $49.99 a year |
| Plans published | 3 | 4 |
| Maker | Polymath | Not published |
| Website | polymath.how | getprincipia.com |
| On math learning apps | #23 of 122 | #27 of 122 |
Polymath: what it does well
Principia: what it does well
- Covers eight tiers and 93 mathematical concepts
- Animated visualizations support guided learning
- Free plan includes 15 concepts
- Works on iOS and macOS
- Paid users can sync progress across devices
What to know first
- Free plan locks Tiers 3–8
- Paid access starts at $6.99 a month
- Device syncing requires a paid account
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