Micro SaaS

Chase late invoices without the awkwardness

Enter client, amount, days overdue and tone; get 3 ready-to-send reminder emails that stay professional. For freelancers who hate asking for money.

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10k+
Builders
4.9★
Avg rating
99.9%
Uptime
<2 min
Time to value
What it is

Dunner - definition

Dunner writes 3 professional reminder emails to chase late invoices from a client, amount, and days overdue — so freelancers ask for money without the awkwardness.

Why Dunner

Everything you need to ship faster

3 tones

Built for founders who need results without a learning curve.

Professional copy

Built for founders who need results without a learning curve.

Copy-ready

Built for founders who need results without a learning curve.

No awkwardness

Built for founders who need results without a learning curve.

From idea to result in 3 steps

1

Input

Describe your goal in plain language.

2

Process

Dunner structures the work and runs the workflow.

3

Ship

Copy, export, or upgrade for unlimited runs.

Live studio

Try it on this page

or generate below.

Controls

Result

Your output will appear here.

Loved by operators who ship

★★★★★

"Cut my first-pass work in half."

AL
Alex R.
Indie founder
★★★★★

"Clear pricing and a demo that actually works."

MK
Maya K.
Ops lead
★★★★★

"FAQ answered every objection before checkout."

JT
Jordan T.
Consultant

Frequently asked questions

What is Dunner?

A tool that writes 3 professional reminder emails to chase late invoices from a client, amount, and days overdue.

How many reminders do I get?

It returns 3 ready-to-send emails with built-in escalation.

Can I pick the tone?

It offers 3 tones so you match the client relationship while staying professional.

Are they ready to send?

Yes. The copy is copy-ready to send as-is.

What do I need to enter?

A client, the amount, days overdue, and a tone.

Who should use Dunner?

Freelancers and small shops who want to collect late payments without the awkwardness.

Simple plans that scale

Free
$0
  • Limited daily AI runs (10/day · 50/mo)
  • Studio demo (no extra LLM fee)
Most popular
Pro
$19/mo
  • AI included: 300 gens/mo · fair use (gpt-4o-mini)
  • No separate ChatGPT subscription required
  • Priority support · 2 months free with yearly
Start free trialOr pay yearly — $16/mo
Enterprise
Custom
  • Team seats · SSO / API
  • Optional BYOK (your OpenAI key)
Configure BYOK

FAQ

Can I cancel anytime?

Yes. Self-serve plans cancel anytime; access continues until period end.

Do I need a credit card for the free trial?

No. Start with email signup, then upgrade when ready.

Do I need my own ChatGPT / OpenAI subscription?

No for Free/Pro. AI runs are included in your plan (fair use) via our platform key. Enterprise can optionally bring your own OpenAI key (BYOK) — configure it at /settings (key stays server-side only).

What is Fair Use / what if I hit the AI limit?

Pro includes about 300 AI generations/month (and a daily cap) on gpt-4o-mini. If you hit the fair-use limit, Studio returns a mock/demo result until the daily or monthly reset — or upgrade / use Enterprise BYOK for heavier volume.

Is checkout secure?

Payments are processed by Waffo Pancake (merchant of record).

What happens after I pay?

You receive access confirmation; fulfillment is tracked via webhook + order logs.

Start smarter today

Join builders using Dunner. Free to try — no card needed.

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