ARFlow — The $49/Month Receivables Aging Dashboard That Chases Late Invoices So You Do Not Have To
Your QuickBooks aging report is a wall of shame you avoid opening. ARFlow pulls your receivables, shows you who is 30/60/90 days overdue in one glance, and fires a personalized payment reminder email automatically — no awkward phone calls, no spreadsheet, no excuses.
Difficulty
beginner
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
SMB owners and their bookkeepers manually track overdue invoices in spreadsheets and draft payment reminder emails one by one because accounting software reminder tools are inflexible and lack visual aging dashboards.
What is it?
SMBs under $5M ARR lose an average of 4% of annual revenue to late payments, and the current workflow is a disgrace: open QuickBooks, export the aging report, sort it in Excel, draft reminder emails manually, hope for the best. ARFlow connects to QuickBooks Online or Xero via OAuth, syncs outstanding invoices, surfaces a clean aging dashboard segmented by 0-30, 31-60, 61-90, and 90+ days, and fires configurable payment reminder sequences via email. The magic is the tone escalation: friendly nudge at 7 days, firmer follow-up at 30 days, formal demand at 60 days — all editable templates. Target: 200k+ US SMBs in services, consulting, and construction who invoice net-30 and hate chasing money. 100% buildable now: QBO API is stable, Resend handles transactional email cheaply, and the UI is a simple sortable table.
Why now?
Resend dropped transactional email costs to near-zero in 2025 making automated reminder sequences economically viable at $49/month price points where legacy tools like Chaser charge $300/month.
- ▸Live aging dashboard synced from QuickBooks Online or Xero with 0-30/31-60/61-90/90+ segmentation
- ▸Configurable 3-step reminder email sequence with tone escalation (friendly, firm, formal)
- ▸One-click Stripe payment link insertion into reminder emails
- ▸Per-client reminder opt-out to protect key relationships
Target Audience
SMB owners in services, consulting, and construction with $500k–$5M ARR who invoice net-30 — ~200k US businesses.
Example Use Case
Tom, a 3-person IT consulting firm owner, connects QBO, sees $47,000 in overdue invoices sorted by age, activates the reminder sequence, and collects $31,000 within 2 weeks without making a single phone call.
User Stories
- ▸As a consulting firm owner, I want to see all overdue invoices grouped by age in one dashboard, so that I know exactly where my cash flow problem is without exporting spreadsheets.
- ▸As an SMB owner, I want the app to send automatically escalating payment reminder emails, so that I collect late payments without awkward phone calls.
- ▸As a business owner, I want to opt specific clients out of automated reminders, so that I protect key relationships from impersonal emails.
Done When
- ✓Sync: done when connecting QuickBooks populates the aging dashboard with real open invoices segmented into four age buckets within 30 seconds.
- ✓Aging table: done when clicking a column header sorts invoices by that field and the days_overdue number is correct and color-coded.
- ✓Reminder send: done when activating a sequence for one invoice sends a correctly templated email to the configured address within 60 seconds with the right customer name and amount.
- ✓Opt-out: done when toggling opt-out on a client prevents any reminder emails from being sent to that client even if the sequence is active.
Is it worth building?
$49/month x 40 SMBs = $1,960 MRR at month 2. $49/month x 200 SMBs = $9,800 MRR at month 9.
Unit Economics
CAC: $25 via Reddit and QBO ProAdvisor referrals. LTV: $588 (12 months at $49/month). Payback: 0.5 months. Gross margin: 85%.
Business Model
SaaS subscription
Monetization Path
Free tier: connect QBO, view aging dashboard, 0 automated reminders. Paid $49/month: unlimited automated reminder sequences.
Revenue Timeline
First dollar: week 3 via paid beta. $1k MRR: month 2. $5k MRR: month 6. $10k MRR: month 12.
Estimated Monthly Cost
Resend: $20, Vercel: $20, Supabase: $25, Stripe fees: ~$25, QBO API: $0. Total: ~$90/month at launch.
Profit Potential
Full-time viable at $8k–$10k MRR with 160–200 customers.
Scalability
High — add SMS reminders, payment links via Stripe, and a client self-service payment portal.
Success Metrics
Week 3: 5 SMBs connected QBO. Month 1: 10 paying. Month 3: 50 paying at 85% retention.
Launch & Validation Plan
Post the aging dashboard screenshot in r/smallbusiness and r/consulting, DM 20 QuickBooks users on LinkedIn offering free beta and promising never to send a bad email to their clients.
Customer Acquisition Strategy
First customer: post in r/smallbusiness asking 'how do you handle late invoice follow-up?' and reply to every thread with a free beta invite link. Then: QuickBooks ProAdvisor referral network, r/consulting, LinkedIn content targeting SMB owners, bookkeeper partnership program.
What's the competition?
Competition Level
Medium
Similar Products
QuickBooks built-in payment reminders (no dashboard, no tone escalation), Chaser (UK-focused, expensive), YayPay (enterprise) — none offer a visual aging dashboard with editable tone-escalating sequences at $49/month.
Competitive Advantage
QuickBooks built-in reminders are ugly and non-customizable. FreshBooks has reminders but no tone escalation. This is the only tool with a visual aging dashboard plus editable tone-escalating sequences.
Regulatory Risks
Low regulatory risk. QBO OAuth requires app review — apply day one. Store no financial data beyond invoice IDs and amounts synced from QBO.
What's the roadmap?
Feature Roadmap
V1 (launch): aging dashboard, 3-step email sequence, QBO sync, opt-out. V2 (month 2-3): Stripe payment links in emails, Xero integration, reminder analytics. V3 (month 4+): SMS reminders, client payment portal, team accounts.
Milestone Plan
Phase 1 (Week 1-2): QBO sync, aging dashboard, and reminder template editor live. Phase 2 (Week 3-4): Resend email sending, Stripe billing, and Vercel Cron live. Phase 3 (Month 2): 10 SMBs with active reminder sequences running.
How do you build it?
Tech Stack
Next.js, QuickBooks Online API, Xero API, Resend for email, Supabase, Stripe — build with Cursor for QBO sync logic, Lovable for dashboard UI, v0 for aging table component.
Suggested Frameworks
node-quickbooks, xero-node, Resend SDK
Time to Ship
2 weeks
Required Skills
QuickBooks Online OAuth, Resend email API, Next.js, basic Supabase.
Resources
QuickBooks Online API developer portal, Resend docs, Supabase quickstart, node-quickbooks npm package.
MVP Scope
app/page.tsx (landing), app/dashboard/page.tsx (aging table), app/api/qbo/sync/route.ts (QBO invoice sync), app/api/reminders/send/route.ts (Resend email trigger), app/settings/page.tsx (reminder template editor), components/AgingTable.tsx (sortable 4-bucket table), components/ReminderSequence.tsx (template editor UI), lib/db/schema.ts (invoices, reminders, users), lib/qbo-client.ts, .env.example.
Core User Journey
Connect QBO -> see aging dashboard -> activate reminder sequence -> receive payment notification -> upgrade to paid.
Architecture Pattern
QBO OAuth connect -> cron syncs invoices to Supabase every 4 hours -> aging buckets computed -> cron fires Resend emails per reminder schedule -> reminder log updated -> dashboard refreshes on next load.
Data Model
User has one QBOConnection. QBOConnection has many Invoices. Invoice has many ReminderLogs. User has many ReminderTemplates. ReminderTemplate has one ToneLevel.
Integration Points
QuickBooks Online API for invoice sync, Xero API for alternative sync, Resend for reminder emails, Stripe for payment links in emails, Supabase for database, Vercel Cron for scheduled sync.
V1 Scope Boundaries
V1 excludes: SMS reminders, self-service client payment portal, multi-entity support, team accounts, Xero (post-QBO validation), mobile app.
Success Definition
A consulting firm owner connects QuickBooks, activates a reminder sequence, receives a payment from a 45-day overdue client within 2 weeks, and upgrades to annual billing.
Challenges
The hardest non-technical problem is convincing SMB owners to trust automated emails to their clients — the first reminder that goes out wrong destroys retention instantly.
Avoid These Pitfalls
Do not auto-send any email without a preview-and-approve step in the first version — one wrong email to a client kills trust and churns the user. Do not build Xero integration before QBO is working and validated with 5 paying users. Finding first 10 paying SMBs takes 3x longer than building — budget for hands-on onboarding calls.
Security Requirements
Supabase Auth with Google OAuth, RLS on all invoice and reminder tables, QBO tokens encrypted at rest, rate limiting 20 emails/hour per user, GDPR data deletion endpoint required.
Infrastructure Plan
Vercel for Next.js and Cron jobs, Supabase for Postgres and auth, Resend for email, GitHub Actions for CI/CD, Sentry for error tracking, total ~$90/month.
Performance Targets
50 DAU and 400 req/day at launch, QBO sync under 5s, dashboard load under 2s, cron job reliability 99.5% uptime.
Go-Live Checklist
- ☐QBO app review approved.
- ☐Security audit complete.
- ☐Payment flow tested end-to-end.
- ☐Sentry live.
- ☐Monitoring dashboard configured.
- ☐Custom domain with SSL set up.
- ☐Privacy policy and terms published.
- ☐3 beta SMBs signed off.
- ☐Launch post drafted for r/smallbusiness.
First Run Experience
On first run: a demo mode pre-loads 8 fictional invoices across all four aging buckets with realistic customer names and amounts. User can immediately activate a reminder sequence and send a test email to themselves. No manual config required: demo works without QBO connection, showing the full dashboard and email preview with seed data.
How to build it, step by step
1. Define schema: invoices (id, qbo_id, customer_name, amount, due_date, days_overdue, status), reminder_logs (id, invoice_id, sent_at, template_level), users (id, qbo_token). 2. Run npx create-next-app arflow and install node-quickbooks, resend, drizzle-orm, stripe. 3. Implement QBO OAuth flow in /api/qbo/auth/route.ts storing tokens in Supabase. 4. Build invoice sync function in /api/qbo/sync/route.ts pulling open invoices and computing days_overdue. 5. Build AgingTable.tsx component with four sortable columns and color-coded overdue badges. 6. Build ReminderSequence.tsx template editor with three tone-level tabs and variable insertion (customer name, amount, due date). 7. Implement /api/reminders/send/route.ts using Resend SDK with template variable substitution. 8. Set up Vercel Cron job to sync QBO every 4 hours and check reminder trigger conditions. 9. Add Stripe billing with free tier enforcement (0 auto-reminders until paid). 10. Deploy and walk full journey: connect QBO sandbox, see demo invoices in aging table, send a test reminder email to your own inbox, verify it arrives with correct variables.
Generated
June 4, 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.