You Run the Class. You Shouldn't Have to Run After the Payments Too.

Nüdge Theory sends automated payment reminders to parents so you focus on what you do best.

Plans start at $29/month. 30-day money-back guarantee.

You started your classes because you're good at something and you wanted to share it. Art, coding, a sport, a language, drama. Whatever it is, the reason you do it has nothing to do with invoicing.

But invoicing is now part of the job. Monthly fees, term packages, registration deposits, one-off workshop fees. There's a constant stream of payment activity attached to the classes you run. And when parents are late, the follow-up falls on you.

That follow-up is one of the most uncomfortable tasks in running a small enrichment business. You see these families regularly. Their children are in your class, engaged and enjoying themselves. The relationship is positive. And you'd like it to stay that way. Which is exactly why asking for money feels like it threatens something.

Nüdge Theory removes that discomfort entirely by removing you from the reminder process.

Why parents of enrolled children pay late

Invoice reminder software for children's activity classes

It's rarely deliberate. The parents who enrol their children in enrichment classes are, almost by definition, engaged and invested. They signed up because they care. They pay late because they're managing school runs, work deadlines, their own admin, and approximately fifteen other things at any given moment.

Your invoice lands in their inbox and gets mentally flagged as "I'll sort that tonight". And then it doesn't get sorted. Not because they don't intend to. Because something else came up.

A professional, timely reminder is genuinely useful to these parents. It just doesn't feel that way when you're the one who has to send it. Nüdge Theory sends it instead.

How it works

What Nüdge Theory does for enrichment class operators

When you send your invoice (monthly fee, term package, whatever your structure) spend 45 seconds setting up a reminder in Nüdge Theory. Add the parent's email, the invoice amount, and the due date. That's the extent of your involvement.

Nüdge Theory sends a friendly heads-up three days before the due date. A professional reminder on the due date. Follow-ups at seven and fourteen days after if the invoice remains unpaid.

Every email sounds like it comes from your business administration: warm, professional, and clear. Parents respond to it the same way they'd respond to you, without any of the social friction that comes with a personal follow-up at pickup time.

When payment arrives, one click marks it paid. The reminders stop. Done.

Built for your workflow

Built for the way enrichment businesses work

Term-based classes

Many enrichment providers charge per term. Nüdge Theory handles term fee reminders the same way it handles monthly ones: each invoice gets its own sequence, followed up consistently until it's paid.

Multiple enrolments

A family with two children enrolled across different classes might have multiple invoices at different stages. Nüdge Theory tracks each one separately, so you always know exactly what's outstanding across all your students.

High family turnover

New students joining mid-term, families leaving, one-off workshops: the invoice volume of an active class schedule can be significant. Nüdge Theory makes sure every invoice gets the same consistent follow-up, regardless of whether it's for a returning family or a first-time enrolment.

Word-of-mouth reputation

Enrichment classes grow through parent networks. One awkward payment conversation, caught at the wrong moment, in the wrong tone, can affect how a parent talks about your classes to the friends in their network. Nüdge Theory keeps the payment process professional so your reputation stays focused on what you actually teach.

Any invoicing setup

Whether you send invoices by email, use a booking platform, or hand out paper invoices at class, Nüdge Theory works alongside whatever system you already have. No migration, no new software to learn.

You started your classes because you're good at something and wanted to share it. The invoicing, the follow-ups, the awkward conversations at pickup: none of that is why you do this. Nüdge Theory handles the part you didn't sign up for.

What's included

What you get

Automated payment reminders per invoice: before, on, and after the due date

Professional, warm reminder emails that reflect well on your classes

Dashboard showing payment status across all enrolled families

Works with bank transfer, PayPal, Stripe, or any payment method

One-click Mark as Paid to stop reminders the moment payment arrives

Get paid on time, without the awkward follow-ups

You built something these families genuinely value. Getting paid for it consistently shouldn't require this much effort.

Plans start at $29/month. 30-day money-back guarantee.