Overdue is a freemium AI business app that helps you manage unpaid invoices and automate payment reminders. Built for freelancers and small businesses, it gives business owners a more organized way to follow up on late payments without replacing their existing accounting software.

To get started with Overdue, you import your invoice list, choose a reminder schedule, and let the app handle routine follow-ups. Messages begin with a polite letter and become firmer over time. You can review and edit each message before sending, while client replies and recorded payments pause or stop the sequence as needed.

From invoice imports to payment collection

Overdue lets you upload invoice lists as CSV files exported from PayPal, Stripe, QuickBooks, Xero, or other billing tools. Smart column mapping matches your data to the right fields, and a preview lets you check invoice amounts, currencies, due dates, and recipients before you send reminders. You can also prioritize older or higher-value invoices when deciding which clients to contact first.

Once your invoices are ready, you can use a preset reminder schedule or create your own recovery ladder. Each step has a set delay, a message tone, and an AI-generated draft. Choose from gentle, neutral, firm, or final reminders to suit the situation, then edit every message before sending. The first reminder can go out automatically on day one, with later messages following your schedule.

The follow-up sequence pauses when a client replies or promises a payment date, and stops once you record a payment, marking the invoice as recovered. For collection planning, built-in calculators help you estimate late fees, track invoice aging, assess collection ROI, and work out payment plans and days sales outstanding (DSO). However, you must import invoices via CSV files, as the app doesn't sync directly with your accounting software.

Useful for routine payment follow-ups

Overall, Overdue is a useful option for freelancers, agencies, and small businesses that regularly manage late payments. Its scheduled reminders, editable AI drafts, and reply-based pauses help reduce repetitive follow-up work without taking away your control over client communication. The calculators also help with collection planning. That said, businesses that rely on direct accounting integrations may find importing invoice files less convenient.