Calculators and planners that run in your browser. Inputs can be saved locally on this device — signed-in sync comes later.
Runway, margins, pricing, and the numbers behind running a product.
Marketing budgets, ad spend forecasts, ROAS, and store economics.
Salary breakdowns, target take-home, and UK tax estimates for planning.
Shared browser image engine — favicons, icons, OG images, SVG.
How to think about agents, cost, structure, and evaluation.
Choosers and checklists for shipping real systems.