Start Free. Grow With Us.
selectNsolve Basic™ is available now at no cost. Pro and Classroom tiers are in development — register your interest and we'll notify you at launch.
Free forever
No credit card required
- Single-variable equation solving
- User-defined variable search bounds
- Standard math operators (+, −, ×, ÷, ^, √)
- Unicode variable names & units
- Google Sheets™ native integration
- Community support
AI-managed multi-variable solver
or $59/year — save 38%
- Everything in Basic
- Solve systems of up to 30 variables
- AI tracks domain min/max and precision per variable
- Early access to new features
- Student seats included
For instructors & institutions
- Everything in Pro
- Up to 35 student seats
- Shared equation libraries
- Instructor dashboard
- Dedicated onboarding call
- Non-profit / school discounts available
selectNsolve Pro™ — Built for AI Agents
Pro tier is designed ground-up for AI-managed workflows. An agent reads your math text, decomposes a system of equations, and orchestrates up to 30 authenticated files to solve each variable automatically — no manual intervention required.
What Pro Offers AI Agents
- ⊗
Systems of up to 30 variables
An agent decomposes a multi-variable problem and solves each unknown in its own authenticated file simultaneously.
- ⊕
Implicit & transcendental equations
Suited for equations that cannot be rearranged analytically — the add-on narrows the domain dynamically. Convergence depends on the equation, bounds, and precision.
- ⇥
AI-managed domain bounds
The agent sets and adjusts min/max bounds per variable, using wide initial domains to guard against the add-on's known out-of-bounds edge case.
- σ
Per-variable precision control
Precision is specified individually per equation, letting the agent balance speed and accuracy across the system.
Example: Pipe Network Analysis
A system of pipe equations has 5 unknowns — friction factor, velocity, Reynolds number, head loss, and flow rate — each appearing in coupled implicit equations.
Agent workflow
- Agent reads the user's contiguous math text range
- Decomposes into 5 variable/equation pairs
- Creates 5 authenticated files, one per variable
- Writes cloned math text with wide domain bounds into each
- Add-on solves each file; agent reads back all 5 results
A Pro-authenticated AI agent orchestrates the full solve cycle — from reading your math text to returning results — without any manual steps.
Agent reads one range
The AI agent reads a single contiguous range of selectNsolve math text — constants, variable definitions, and equations — and decomposes it into individual variable/equation pairs.
sheets_read_range(sheetId, "A1:B40")Agent creates authenticated files
For each variable, the agent creates a separate authenticated Google Sheets™ file, clones the shared constants and the relevant equation, and sets wide domain bounds and precision.
sheets_apply_template(varPair, bounds, precision)Add-on solves, agent reads results
The add-on runs automatically in each authenticated file, narrowing the domain toward a solution. The agent reads back all results and assembles the full output.
f = 0.0182, Re = 4.21×10⁴, ...selectNsolve Pro™ is coming soon. Register your interest and be among the first to access AI-managed multi-variable solving.
Register InterestFrequently Asked Questions
Is selectNsolve Basic™ really free forever?
Yes. Basic will always be free. It is the foundation of our mission to make equation solving accessible to every student and educator.
When will Pro and Classroom be available?
We are actively developing both tiers. Use the Support page to register your interest and you will be among the first to know when they launch.
What equations can Basic solve?
Single-variable equations with user-specified search bounds. Works well for implicit and transcendental equations such as Colebrook-White — though convergence depends on the equation type, the bounds you provide, and the precision setting. The add-on narrows the domain dynamically and returns a result within 60 seconds.
How does selectNsolve Pro™ work with AI?
selectNsolve Pro™ is designed for AI-assisted workflows. An AI agent reads your math text range, decomposes it into individual variable/equation pairs, and creates up to 30 authenticated Google Sheets™ files — one per variable. The add-on solves each file automatically. The AI manages the domain bounds and precision per variable, handling the full system without manual intervention.
Ready to start solving?
selectNsolve Basic™ is free today. Install it in Google Sheets™ and try it on your next equation.