How do auto-canceling subscriptions work?
If you don't use Beeminder for 30 days in a row, we'll send you an email letting you know your premium subscription is on hold, and we'll stop charging you for it. Details and background on the blog. If you return and start beeminding again, your subscription will reactivate automatically, and the charges will begin at the same frequency as before.
Only adding data (manually or automatically) or creating a new goal counts as using Beeminder. Logging in or making changes to your goals (e.g. changing the rate) will not prevent your premium subscription being automatically paused.