A service estimate
Use supplied rates and rules to show an indicative range. Make exclusions and the need for a final quote visible alongside the result.
N+ Studio / Calculators & interactive tools
Custom website calculators. Useful answers, right on your site.
Help a visitor work something out instead of asking them to piece it together. We build calculators, selectors and guided tools around your business rules, with inputs and results that people can understand.
N+ PLUS
Ongoing management from
$225/month*+ $1,500 one-time build fee
$4,200 paid upfront for 12 months
Ongoing management: hosting, domain, upkeep, backups and standard recovery.
Save 10% when you prepay two years.
Compare plans and what’s included ↗*Monthly equivalents, not monthly payments during your initial term. The first year is prepaid. Choosing two years at launch saves 10% on setup and all 24 months of support. Service begins at launch. USD before tax; starting prices apply to defined scopes. Additional features and usage are quoted before work.
The right fit
For a website that needs to help visitors make a choice.
An interactive tool is a good fit when a visitor can answer a few questions and receive a useful result without needing an ongoing account. The essential work is defining the rules: what goes in, how the result is calculated, and what the result does and does not mean.
Compare a website, interactive tool and web appWhat it could help you do.
Illustrative project types, shaped around your requirements.
An option selector
Guide visitors through the criteria that matter and explain which option fits their answers.
A planning calculator
Turn a repeat calculation into a clear set of inputs, units, assumptions and results that visitors can revisit.
A defined starting point
What we scope together.
- Everything in the defined business website package.
- One calculator, selector or guided tool, with rules and inputs agreed before development.
- A result presentation that explains the supplied assumptions and next step.
- Responsive interaction design for the agreed visitor journey.
- Testing of agreed examples and edge cases before launch.
- One design direction, two consolidated revision rounds and source handover.
The base build is a website plus one defined tool. Accounts, saved progress, storage, portals, payments and integrations are scoped additions. An existing-site integration needs its own review. With N+ Plus, agreed hosting, one eligible domain, routine upkeep, backups and standard recovery are included within your quoted usage and support limits. Extra features and third-party services outside that scope are quoted separately. Build & Handover excludes ongoing hosting and maintenance.
Before we build
A useful brief starts here.
- The question the tool should answer and who will use the result.
- The formula, decision rules, units and examples of correct results.
- Important exclusions, unusual inputs and how often the underlying data changes.
We review the brief, ask focused questions and propose deliverables, price and timing. No work begins until the scope is agreed. You can start by email without a sales call.
A little clarity
Questions before you start.
Can you add a calculator to an existing website?
Tell us how the site is built and where the tool should appear. We will assess integration requirements and quote the work. The published starting price describes the website-plus-tool package, not every existing-site integration.
Can the calculator collect leads or send a quote?
It can be scoped to do that. Email delivery, customer data storage and integrations change the build and privacy requirements, so they are agreed separately.
How do you check the results?
We test the agreed rules against examples you provide, including unusual inputs and boundary cases. Any assumptions or exclusions are made clear alongside the result.
Can visitors save their results?
Saved progress and accounts are possible additions. They require decisions about identity, storage, access and ongoing care, and are priced separately.
Another starting point?
Tell us what should work better.
Start a project
Your idea + your email. No commitment.