Chrome extension that detects SaaS subscriptions from billing emails and alerts you before renewal charges
Stage
Not given
Established
Founded
Not given
2019
Based in
US
IN
Pricing model
Freemium
Freemium
Pricing
Free plan available with limited monthly sends. Paid plans on a monthly or annual billing cycle with plan-specific features and team member limits. No percentage taken on payments collected; flat monthly price for plan plus standard card processor rates.
Free plan costs nothing with unlimited detection and email alerts on 5 lowest-cost subscriptions. Pro is $9 per month with unlimited subscriptions and all alerts. Business is $29 per month for up to 10 team members. Both paid plans include 7-day free trial and 14-day money-back guarantee.
Key features
Invoices with automatic tax and currency calculation
Estimates that convert to invoices
Card payments with public pay page and QR codes
Automated reminders and dunning campaigns
Client portal with verified email or phone login
Time tracking, expenses, and mileage rebilling
Vendor management and bills payable
AI Assistant integration via MCP
REST API with scoped keys and webhooks
Multiple business support in one workspace
7-day renewal alerts by Chrome notification and email
Post-cancellation charge monitoring with immediate alerts if billing resumes
Price increase detection flagging charges 20% or more above previous amount
Dark pattern difficulty scores 1-10 for 68 tracked SaaS tools
Timestamped cancellation records with evidence for disputes
Gmail detection with no connection required, only account signup
Outlook 12-month billing history scan with daily auto-rescan on paid plans
Billing history and spending totals in 8 currencies
Team dashboard with up to 10 seats and admin overview
Cloud sync across devices on paid plans
What makes it different
No percentage taken on payments; flat monthly pricing only
Human-in-the-loop AI: drafts wait for person or capped rule approval before sending
Unified verified-contact portal where customers see all invoices across any BillingMart merchant
Server-side math eliminates invoice calculation errors
12 pre-configured business models with industry-specific fields and payment terms
Gmail detection runs in your browser with no Gmail API connection or permissions required
Continues monitoring after cancellation to catch charges that arrive anyway
Published cancellation difficulty scores with reasoning, not hidden affiliate relationships
Chrome extension delivery means no bank connection and no card details exposure
BillingMart
BillSensor