AppSite
Income plan management — sell recurring plans to customers and track revenue in Books.
Create pricing plans — monthly, annual, or one-time — and assign customers to them.
Customer roster — active, trial, paused, cancelled — with full billing history per account.
Record payments, upgrades, downgrades, and refunds — each auto-posts a journal entry to Books.
Plan revenue flows directly into Books as income — MRR, ARR, and GL entries all in sync.