DSORadar — AR Aging Dashboard That Chases Invoices So You Do Not
Your DSO is creeping past 45 days and you are still copying invoice numbers into a Gmail draft. DSORadar connects to QuickBooks, builds a live aging dashboard, auto-generates payment reminder sequences, and tells you exactly which customers are about to blow your cash flow. It is the AR coordinator you cannot afford to hire at $200/month.
Difficulty
intermediate
Category
Finance
Market Demand
Very High
Revenue Score
8/10
Platform
Web App
Vibe Code Friendly
No
Hackathon Score
5/10
Validated by Real Pain
— sourced from real community discussions
Accounts receivable coordinators at SMBs manually track overdue invoices in spreadsheets and write payment reminder emails by hand because QuickBooks and Xero built-in reminder tools lack intelligence, escalation logic, and cash flow visibility.
What is it?
Accounts receivable is the silent cash flow killer for service SMBs. QuickBooks shows you aging buckets but does not chase anyone. Xero has reminders but no intelligence about which customers to prioritize. DSORadar fills this gap: connect your QuickBooks or Xero account, get a live DSO score, aging heatmap by customer, and auto-generated reminder emails that escalate tone based on days overdue — all without a human AR coordinator. The product integrates with the QuickBooks Payments API and Xero API for live data, uses Claude to write context-aware reminder emails (firm but not rude), and tracks response and payment rates so you know which customers to stop extending credit to. Target is 200,000+ US SMBs with 20-200 outstanding invoices per month that cannot justify an AR hire. Buildable in 2 weeks — QBO OAuth is well-documented and the email logic is straightforward.
Why now?
QuickBooks API now supports reliable OAuth 2.0 refresh tokens and the June 2026 AI wave has made Claude-generated business emails indistinguishable from human-written ones, finally making AI-written reminders commercially viable.
- ▸Live DSO score and aging heatmap by customer synced from QuickBooks or Xero OAuth (Implementation note: node-quickbooks SDK for QBO, official Xero Node SDK)
- ▸AI-generated payment reminder sequences that escalate tone from friendly to firm based on days overdue via Claude API
- ▸Customer credit risk score based on historical payment behavior and current aging
- ▸One-click payment link insertion into reminders using Stripe or QBO Payments
Target Audience
SMB finance managers and founders with 20-200 outstanding invoices/month, ~200,000 US businesses in professional services and e-commerce.
Example Use Case
Diane, owner of a 12-person marketing agency, connects QuickBooks in 2 minutes, sees that 3 clients owe $48,000 at 60+ days, DSORadar sends escalating reminders, and $31,000 is collected within 10 days without Diane writing a single email.
User Stories
- ▸As a professional services founder, I want a live DSO score synced from QuickBooks, so that I know immediately when my cash flow is at risk.
- ▸As a finance manager, I want AI-generated escalating reminders sent automatically, so that I stop writing the same awkward payment email for the 200th time.
- ▸As a business owner, I want a customer credit risk score based on payment history, so that I know which clients to stop extending net-30 terms to.
Done When
- ✓QBO sync: done when user completes OAuth and sees their real open invoices in the aging heatmap within 60 seconds.
- ✓Reminder generation: done when user clicks Generate for a 45-day overdue invoice and a firm-but-professional email draft appears within 5 seconds.
- ✓Send tracking: done when approved reminder shows Sent status with timestamp and opens tracked in the dashboard.
- ✓DSO score: done when a numeric DSO score updates on the dashboard whenever new invoice data syncs.
Is it worth building?
$200/month x 25 users = $5,000 MRR at month 3. $200/month x 100 users = $20,000 MRR at month 8. Math: 2% conversion from 5,000 QuickBooks community members reached via targeted content.
Unit Economics
CAC: $20 via content and community posts (no paid ads at launch). LTV: $2,400 (12 months at $200/month). Payback: under 1 month. Gross margin: 90%.
Business Model
SaaS subscription
Monetization Path
14-day free trial with full access. Paid at $200/month after trial. Annual plan at $1,800 for cash flow management.
Revenue Timeline
First dollar: week 2 via beta upgrade. $1k MRR: month 2. $5k MRR: month 5. $10k MRR: month 9.
Estimated Monthly Cost
Claude API: $30, Vercel: $20, Supabase: $25, Resend: $15, Stripe fees: $25. Total: ~$115/month at launch.
Profit Potential
Full-time viable at $5k–$20k MRR given the massive SMB TAM.
Scalability
High — can add Stripe invoicing sync, ACH payment links embedded in reminders, and multi-entity support.
Success Metrics
Month 1: 5 paying users. Month 2: 80% of users report collecting at least one overdue invoice via the tool. Month 3: 70% retention.
Launch & Validation Plan
Post a free DSO calculator in r/smallbusiness and r/Accounting before building any integration — validate that 100 people use it in 72 hours.
Customer Acquisition Strategy
First customer: post a free standalone DSO calculator tool in QuickBooks Community forums and offer DSORadar beta to commenters who express pain. Ongoing: SEO content targeting 'reduce DSO QuickBooks', LinkedIn content for agency owners, r/Accounting community posts.
What's the competition?
Competition Level
Medium
Similar Products
Chaser (reminder-only, no AI, no DSO analytics, UK-focused), QuickBooks built-in reminders (no escalation logic, no intelligence), YayPay (enterprise-only, $1k+/month) — DSORadar is the affordable, intelligent middle tier.
Competitive Advantage
Combines live QBO/Xero sync with AI-written escalating reminders — competitors like Chaser do reminders but lack the cash flow intelligence layer.
Regulatory Risks
Low regulatory risk. Financial data accessed via read-only OAuth scopes. GDPR data deletion endpoint required. No financial advice or regulated activity.
What's the roadmap?
Feature Roadmap
V1 (launch): QBO sync, aging heatmap, DSO score, AI reminders, Resend delivery. V2 (month 2-3): Xero integration, payment link in reminders, reminder response tracking. V3 (month 4+): credit risk scoring, multi-entity, team seats.
Milestone Plan
Phase 1 (Week 1-2): QBO OAuth, invoice sync, aging heatmap live. Phase 2 (Week 3-4): Claude reminders, Resend delivery, Stripe billing. Phase 3 (Month 2): 5 paying users, Xero integration scoped.
How do you build it?
Tech Stack
Next.js, QuickBooks API, Xero API, Claude API, Supabase, Stripe, Resend — build with Cursor for API integrations, v0 for dashboard components.
Suggested Frameworks
Next.js App Router, node-quickbooks SDK, Anthropic SDK
Time to Ship
2 weeks
Required Skills
QuickBooks OAuth integration, Next.js, Claude API, Supabase, Resend email sequences.
Resources
Intuit Developer docs, Xero API docs, Anthropic SDK, node-quickbooks npm package.
MVP Scope
app/page.tsx (landing), app/dashboard/page.tsx (aging heatmap + DSO score), app/api/qbo/callback/route.ts (OAuth callback), app/api/sync/route.ts (invoice sync), app/api/reminders/route.ts (Claude reminder generator), lib/db/schema.ts (invoices, customers, reminders, users), components/AgingHeatmap.tsx, components/ReminderPreview.tsx, seed.ts (20 demo invoices), .env.example.
Core User Journey
Connect QBO -> see aging heatmap in 60 seconds -> review AI reminder drafts -> approve and send -> track response and payment.
Architecture Pattern
User completes QBO OAuth -> /api/qbo/callback stores tokens in Supabase -> cron job runs /api/sync every 6 hours -> invoice data upserted to Supabase -> Claude generates reminder drafts -> Resend sends on schedule -> payment webhook updates invoice status.
Data Model
User has one QBOConnection. User has many Customers. Customer has many Invoices. Invoice has many Reminders. Reminder has one AIGeneratedDraft and one SendStatus.
Integration Points
QuickBooks API for invoice data, Xero API for alternative sync, Claude API for reminder writing, Stripe for payment links, Resend for email delivery, Supabase for database, Vercel for hosting.
V1 Scope Boundaries
V1 excludes: Xero integration (QBO only at launch), mobile app, multi-entity, ACH payment collection, team seats, custom reminder templates.
Success Definition
A founder connects QuickBooks, receives a reminder sequence, and a customer pays an overdue invoice — all without the founder writing a single email or talking to the DSORadar team.
Challenges
QuickBooks and Xero both have painful OAuth flows that break on token refresh — this is the hardest non-technical problem because it causes silent data sync failures that destroy user trust. You must build robust token refresh handling before launch or churn will be brutal.
Avoid These Pitfalls
QuickBooks OAuth token refresh is notoriously unreliable — build retry logic on day one or users will hit silent sync failures and churn. Do not add Xero integration until QBO is stable. Finding first 10 paying customers will take 3x longer than building — budget accordingly.
Security Requirements
Supabase Auth with Google OAuth, QBO tokens encrypted at rest in Supabase, RLS on all user tables, rate limiting 50 req/min per IP, GDPR data deletion deletes QBO tokens and invoice data.
Infrastructure Plan
Vercel for Next.js plus cron jobs for sync, Supabase for Postgres, Resend for email, Sentry for errors, GitHub Actions for CI.
Performance Targets
100 DAU at launch, QBO sync under 10s for 200 invoices, dashboard load under 2s, cron sync runs every 6 hours.
Go-Live Checklist
- ☐Security audit complete.
- ☐Payment flow tested end-to-end.
- ☐Sentry error tracking live.
- ☐Monitoring dashboard configured.
- ☐Custom domain with SSL active.
- ☐Privacy policy and terms published.
- ☐5 beta users signed off.
- ☐Rollback plan documented.
- ☐Launch post drafted for r/smallbusiness.
First Run Experience
On first run: 20 demo invoices are pre-loaded showing an aging heatmap with 3 overdue customers and a DSO score of 52. User can immediately generate reminder drafts for the demo invoices without connecting QuickBooks. No manual config required: demo data is seeded, Claude API key is shared for free tier trial.
How to build it, step by step
1. Define Supabase schema: qbo_connections (tokens, realm_id), customers (id, name, email, user_id), invoices (id, amount, due_date, age_bucket, status), reminders (id, invoice_id, draft_text, sent_at). 2. Run npx create-next-app with App Router and Tailwind. 3. Implement QuickBooks OAuth flow using node-quickbooks with token storage in Supabase. 4. Build /api/sync route that fetches open invoices via QBO API and upserts to Supabase. 5. Build AgingHeatmap component showing customers bucketed by 0-30, 31-60, 61-90, 90+ days. 6. Build /api/reminders route calling Claude with invoice context to generate escalating reminder email drafts. 7. Build ReminderPreview component where user reviews and approves drafts before sending. 8. Wire Resend to send approved reminders and log send status in Supabase. 9. Add Stripe Checkout for $200/month subscription with 14-day trial via trial_period_days. 10. Verify: connect a real QBO sandbox account, confirm invoices sync, approve a reminder, confirm Resend delivers it.
Generated
June 11, 2026
Model
claude-sonnet-4-6
Disclaimer: Ideas on this site are AI-generated and may contain inaccuracies. Revenue estimates, market demand figures, and financial projections are illustrative assumptions only — not financial advice. Do your own research before making any business or investment decisions. Technology availability, pricing, and market conditions change rapidly; always verify details independently.