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Rank 4 · Yellow GoldInformation path · EdTech / webAlive · v2 rebuilt Oct 2026

Numeral Insight Gu

Netz — interactive maths learning platform

Numerical methods are taught as walls of formulas. Netz makes you solve them with your hands.

Activate · live demoView source · GitHubAll Gu
Monthly users at its peak
5,000+
Disciples
Monthly users at its peak
Numerical solvers across 5 units
34
Methods mastered
Numerical solvers across 5 units
On-device ONNX models that read handwriting
3
Eyes for ink
On-device ONNX models that read handwriting
Built and run solo since Aug 2024
Founder
Sect master
Built and run solo since Aug 2024
netz-ruby.vercel.app
Home

Screens captured from the live site, Nov 2026. Use ← → to switch screens.

Ability

What it does

Learners work through numerical methods step by step, write maths by hand on a whiteboard, keep notes with live solvers inside, and come back for daily tasks and streaks.

  • 34 numerical-methods solvers across 5 units — Bisection, Gauss-Seidel, fixed-point iteration, t-tests and more — each with step-by-step working, iteration tables and plots.
  • Whiteboard playground: write an equation by hand and three on-device ONNX models read it; it evaluates when you write “=”.
  • Notes workspace with live solver blocks, quizzes and PDF export; notes can be published as public pages.
  • Daily tasks, streaks, gems and medals with the NETZ robot mascot; progress syncs to accounts, and the server ignores faked gem counts.
  • Installable PWA, tuned for SEO and performance.

Feeding

Inputs & upkeep

A Gu that isn’t fed starves. This one needs:

Eats
Learners’ inputs — equations, matrices, handwriting, practice attempts
Upkeep
New problem sets, daily tasks, SEO and performance tuning
If starved
Without fresh problems learners stop returning — engagement is the food

Gu recipe

The stack
  • Main materialNext.js 16Server-rendered pages that search engines can read
  • Main materialNumerical methods engine34 solvers with KaTeX working and Chart.js plots
  • Main materialONNX Runtime WebHandwriting recognition that runs on the device
  • AuxiliarySupabase · Postgres · PWAAccounts and progress sync, installable app, Tailwind UI

Refinement record

How it was built
  1. Stage 1Raw materials
    Elimination GuA Gaussian-elimination browser extension — the seed of the idea.
  2. Stage 2Refined
    Netz launchedAugust 2024: a Next.js platform for numerical methods.
  3. Stage 3Refined
    Standard solversBisection, Gauss-Seidel and more, with consistent step-by-step output.
  4. Stage 4Fed · proven
    PWA & gamificationInteractive problems and guided onboarding — peaked at 5,000+ monthly users.
  5. Stage 5Refined
    Netz v2Oct 2026: handwriting whiteboard, notes workspace, 34 solvers, and tasks, streaks, gems and medals synced to accounts.
  6. Stage 6Next refinement
    Pro plansv2 is live; next, switch on Google sign-in and Razorpay Pro plans.
五 · Killer moveTen Thousand Solutions
Numeral Insight Gu Elimination Gu

The small extension’s solver became the core of a platform thousands used each month.

Next Gu →Blood Seal Gu