- Billing connection
- One account connected on the Connections screen: a Stripe account, a Shopify app, a Wix app, a Paddle account, a Lemon Squeezy store, or a custom API source. Each Shopify or Wix app counts once, even if they share a Partner account. Wix payout uploads belong to their Wix connection, so they never add connections.
- Tracked event
- A product activity event your app sends for Churn Signals, through the SDK, the API or a browser ping. Retries of the same event count once. It has nothing to do with how many subscriptions, customers or revenue you track.
- Churn Signals rule
- A rule that watches product activity for customers at risk, such as key activity stopping or dropping. Free includes one enabled rule. *Unlimited on Launch and Growth means fair use, with a technical safety limit of 50 enabled rules.
- Retention email
- An email sent to one of your customers by a retention or cancellation workflow, whether it goes automatically or after you approve a draft. Customer replies, your answers to them, digests, daily recaps, alerts and test emails don't count.
- Reaching a limit
- The app shows your usage and warns you as you get close. Past a limit, OneMRR stops rather than charges: no new connection, new tracked events are refused with a clear error until the monthly reset, and retention emails are skipped and logged. Billing syncs and MRR never stop, there are no overage charges, and your data is never deleted.