Pricing
The search is the product, and the search is free. What costs money is asking a language model, and keeping your work.
Free
No account needed
- The whole formula catalogue and every formula page
- The a-to-b solver, with the derivation shown step by step
- The relationship graph, and routes between any two formulas
- Symbolic derivation, rendered as real mathematics
- Dimensional checks on anything, including your own relations
- Function plots over any input
- Your own formula packs, dropped in and used immediately
This is the product. It is free because it costs us arithmetic.
Open the explorerPhysics
$8/month
- AI-proposed bridges when no known path exists — checked before you see them
- Saved derivations, so a result you worked for is there next time
- Saved formula packs, so your own equations are always loaded
- Export a derivation as LaTeX or JSON
Every account, including a free one, gets five AI-proposed bridges to try for the life of the account.
Not yet available to buy on this deployment — the plan exists and its capabilities are wired, but no payment product is configured against it.
Free, and no account
The formula catalogue, the relationship graph, the a-to-b solver, route enumeration, symbolic derivation, dimensional checks, function plots and your own dropped-in formula packs. All of it, signed out, unlimited. These cost us arithmetic over data already in memory, and charging for them would gate the step before the one worth paying for.
What a membership buys
A recurring monthly allowance of AI-proposed bridges — every account gets five to try, for the life of the account, and a plan is what makes them recur. Somewhere to keep the derivations you build and the packs you write. And export, so you can take a derivation away as LaTeX or JSON.
Questions
- What happens if I stop paying?
- Every search, solve, derivation and dropped-in pack keeps working, because none of them ever depended on a plan. You lose the recurring bridge allowance and the ability to save new work.