Principia pricing
4 plans read from getprincipia.com
ExplorerFree always freeTiers 1–2 · 15 concepts · guided walkthroughs · live visualizations · progress saved on device · Tiers 3–8 locked Read 11 Oct 2026 · getprincipia.com
Principia Pro$49.99 a year per year; $4.17/month8 tiers · 93 concepts Read 22 Sep 2026 · getprincipia.com
Principia Pro Monthly$6.99 a month per monthAll 8 tiers · 93 concepts · guided walkthroughs · printable study aids · future content included · cancel anytime Read 11 Oct 2026 · getprincipia.com
Principia Pro Annual$49.99 a year per year · $4.17/month · Save 40% vs monthlyAll 8 tiers · 93 concepts · guided walkthroughs · printable study aids · future content included · 7-day free trial Read 11 Oct 2026 · getprincipia.com
In short
- Principia has a free plan (Explorer).
- A free trial is offered.
- Paid plans published: 3, from $49.99 a year.
What the alternatives costAll alternatives →
| Tool | From | Free plan | Free trial |
|---|---|---|---|
| Brilliant | — | Yes | No |
| MobyMax | $0.58/mo | Yes | Yes |
| SplashLearn | $7.49/mo | No | Yes |
| DreamBox Math | — | No | Yes |
| Monster Math | $5/mo | Yes | Yes |
| GeoGebra | — | Yes | No |
| Boddle | $4.08/mo | Yes | No |
| MATHia | $1.55/mo | No | No |