Inside Numera's Local Solver: 20+ Math Solvers That Work Offline

Most math apps work by shipping your problem to a cloud server — an LLM or symbolic math engine — and streaming back a solution. That's fine when you have connectivity. We wanted Numera to work without it.

What the Local Solver Does

Numera ships with a deterministic local solver that handles 20+ math problem types without any network request. The solver runs in a Web Worker, so it doesn't block the UI thread, and it returns answers in milliseconds.

Problem Types Covered

• Arithmetic: integers, fractions, decimals, percentages
• Algebra: linear equations, inequalities, substitution
• Geometry: area, perimeter, volume for standard shapes
• Statistics: mean, median, mode, range
• Probability: simple and compound events
• Proportional reasoning: ratios, unit rates, scale factors
• Financial literacy: simple interest, tax, tip calculations

Why Deterministic Matters

LLMs hallucinate. A deterministic solver always gives the same correct answer for the same input — no variance, no hallucinations. For a practice tool, correctness is non-negotiable. The local solver handles what it can deterministically; the AI fallback handles the rest when connectivity is available.