The Architectural Difference
Why Passive Email Dunning is Dead
When an invoice payment fails, legacy tools wait 3 days to send a polite automated email sequence. The user ignores it or it hits a spam filter. Meanwhile, your app keeps serving traffic, consuming database rows, and generating server costs. A week later, they churn silently.
FlatDun evaluates failed payments directly within your runtime context. The user cannot bypass the billing prompt, forcing an immediate interaction to recover your revenue stream.
Runtime Interception: Listens directly to real-time Stripe webhooks and catches route changes instantaneously via local application middleware.
Session Lockout: Generates an native UI layout overlay. Locks out operations securely until subscription credentials update successfully.
Headless Freedom: Emits clean, descriptive JSON packets. Natively handles state across Web, React Native, and Flutter codebases seamlessly.
The Hard Mathematical Reality of Billing SaaS
Alternative dunning platforms demand 1% to 2% of your hard-earned recovered cash, or trap you in MRR brackets that spike aggressively to $149 or $349/month as your business grows. They did not build your application, yet they levy an ongoing tax on your volume.
FlatDun costs a flat $29/month. Period. Recover one single user subscription per year, and the platform has fully optimized its own runway cost. Everything else remains pure profit.