Reads your Stripe, PayPal or plain invoice list and sends escalating reminder emails in your own tone until the client pays, with one dashboard of who owes what.
The read
QuickBooks' 2025 survey found 56% of small businesses are owed money, averaging $17.5K each, so the pain is documented. Two near-identical products already exist (RemindFox at $19/month, the Invoice Chase app at $6.99/month); Invoice Chase has too few App Store ratings to show and the research found no reviews of RemindFox, so nobody has proven freelancers pay monthly for this rather than use their invoicing tool's reminders.
Biggest risk
Invoicing tools already send reminders (Invoice Ninja lists auto late-payment reminder emails on its pricing page), so the pitch has to prove the 'freelancer's own voice' and escalation logic are worth €9/month on top of a tool they already use, not just a reminder scheduler.
Demand (40): 8 points for every demand signal with a source, 1 for every Google suggestion. Willingness to pay (30): 10 points for every competitor whose paid price our checker saw on its pricing page, 4 for a sourced paid price it could not confirm; free plans count for nothing. Gap (30): 6 points for every complaint found on its page, 3 for one from a search result or a site closed to robots.
Demand evidence
Public posts, reviews and searches that show people want this, each with the address it came from.
The underlying problem (clients paying late) is well documented with real survey numbers; the willingness to pay for a dedicated fix is not yet documented anywhere I could find. Two small, newer products targeting the exact same buyer exist, which shows other builders read the same demand but neither has review volume to tell us if freelancers renew past the first month.
QuickBooks' 2025 US Small Business Late Payments Report: 'over half (56%) of small businesses surveyed reported being owed money from unpaid invoices', averaging $17.5K per business
RemindFox calls itself 'Automated Invoice Reminders & Polite Payment Nudges for Freelancers' and follows up on invoices made in Word, Canva or Google Docs; it starts free, with a $19/month plan.
An iOS app doing the same job (reminder tones: Friendly, Firm, Final) at $6.99/month or $59.99/year; App Store shows 'This app hasn't received enough ratings or reviews to display an overview'
A freelancer-focused blog post calls chasing late payments 'a kind of unofficial second job—one you definitely didn't applied for, you don't get paid for'
In their words: what they type into Google
Google’s own search suggestions, fetched on the day of the dossier. They show what people search for; they carry no volumes.
The competition
Prices from their own pricing pages. Complaints in their users’ own words. Every line says whether our checker found it there.
Pricing, from their own page
What their unhappy users say
No complaint about RemindFox with a source was found.
The openingRemindFox runs the same pitch (follow-up on invoices made elsewhere) at more than double the founder's €9 idea, and the research found no reviews of it, so price and trust are both still open.
Pricing, from their own page
What their unhappy users say
No complaint about Invoice Ninja with a source was found.
The openingInvoice Ninja lists auto late-payment reminder emails among its plan features, tied to invoices made inside Invoice Ninja, so a freelancer who invoices elsewhere has to move first.
Pricing, from their own page
What their unhappy users say
Bonsai has always been far to expensive for my tastes.
The openingBonsai's reminders only come bundled inside a full proposals-contracts-invoicing suite starting at $9–15/month and rising fast, for freelancers who want the whole platform, not just the chasing.
The wedge
The page
A hero section for Nudge & Collect, written from this dossier. Switch the headline, the screen and the theme.
Connect Stripe, PayPal or a plain invoice list. We send the polite reminder, then the firmer one, in your own voice, until the client pays.
Built on Stripe's and PayPal's own invoice and payment APIs, for freelancers who already bill through them.
Built from this dossier’s evidence. The €299 kit ships it as a working pre-sale page with Stripe pre-orders.
Sealed intelligence
Not blurred, not hidden in this page: the sealed parts never leave our server until you unlock. Here is exactly what is inside.
2 price points · 5 named assumptions · break-even
4 channels, each with this week’s first step
9 phrases, by search intent, with the gap each one leaves
4 hooks, written in your buyers’ words
16 files · Next.js 15 · Tailwind 4 · Stripe pre-orders
Unlock
One-time prices, no subscription. Everything opens on this page, for this idea.
Validation Blueprint
The numbers and the plan.
€99one-time
Blueprint + Pre-Sale Launch Kit
A page that takes money before the product exists.
€299one-time
Card payment on this page is being switched on. Until then every unlock is handled personally: one email, a payment link from us, and the full dossier once it is paid. Prefer to write yourself? hello@malchev.co