There are three levels of functionality within ConstantGraph:

• Basic - Suitable for small home automation set-ups or for evaluation purposes.
• Raw data is kept for 1 week
• hourly data for 1 month and daily data for 2 months.
• Up to 100 data changes can be logged in a 10 minute period.
• SmartThings events are rounded to the nearest minute
• Allows data from 1 controller or location
• Free
• Enhanced - Additional storage and rate limits for an additional controller or more frequent data
• Raw data is kept for 2 weeks,
• hourly data for 6 months
• and daily data for 1 year
• Up to 200 data changes can be logged in a 10 minute period
• SmartThings events are rounded to the nearest minute
• Allows data for up to 2 controllers or locations.
• Please make an annual donation of your choosing.
• Premium - Historic data can be imported using our API. Allows the app to provide continuous updates.
• Raw data is kept for up to 1 month (Note that channels may be limited up to a maximum of 50,000 raw data points)
• hourly data for 12 months and daily data for 5 years.
• Allows data for up to 5 controllers or locations.
• Events stored to the nearest second.
• Contact us for additional controllers.
• Please make a monthly donation of your choosing

Subscription payments are handled by an external provider called Ko-fi. You can change your subscription any time via Kofi. Login to your Ko-fi account and navigate to More > Account and Billing. Scroll to the Subscriptions selection, you will see all your active subscriptions. More information can be found on the Ko-fi supporter payments page.

If you miss a donation payment then you will be sent a warning message. After a grace period, your account will be downgraded which may result in loss of some data.