What is the difference between an adoption curve and a retention curve?
An adoption curve plots weekly active users on an existing account as a share of licensed seats, which answers whether the people who already bought are using the product. A retention curve plots the share of a cohort still subscribed over time, which answers whether customers are staying. Adoption is a usage shape measured in weeks, retention is a survival shape measured in months. Both matter, and they tend to move together, but they diagnose different problems.
How is an adoption curve different from a cohort retention chart?
A cohort retention chart groups customers by signup month and tracks the percent still subscribed over many months, which is a long timescale survival chart. An adoption curve tracks weekly active users within a single account against licensed seats, which is a short-timescale usage chart. The cohort chart is a board-level artifact. The adoption curve is a weekly customer success operating tool. Teams typically run both, because they catch different problems in different windows.
What is a good shape for an adoption curve?
A healthy adoption curve rises steeply in the first four to eight weeks, then plateaus at a high percent of licensed seats and holds there. The specific plateau varies by product and plan tier, but the shape is what matters: steep early rise, high plateau, no sustained decline. Flat curves at a low plateau and curves with sustained downward slopes are the two unhealthy shapes, and both are reasons for customer success to engage.
How often should a customer success team review adoption curves?
Weekly for the operating review and monthly for the strategic one. Weekly reviews catch dips while they are fixable and surface the newest points that have not yet shown up in any aggregate metric. Monthly reviews aggregate the shape across the book: how many accounts are climbing, flat, or dipping. More frequent than weekly turns into noise watching, because a single account's weekly point moves on small variations.
What does a flat adoption curve mean?
A flat adoption curve that never climbs past a low plateau usually means the account bought seats it is not actively using. The champion may be invested but the broader team never adopted, workflows never shifted, or the product never became part of the daily rhythm. These accounts are at-risk for non-renewal and are the ones most likely to downgrade, cut seats, or churn quietly. Customer success teams target flat curves with reactivation playbooks before renewal.
What does a dip in an adoption curve mean?
A sudden drop after a period of healthy adoption is one of the loudest churn signals a customer success team receives. It usually means a champion left, a key workflow broke, a competing tool entered the account, or an org change pushed the product off the daily path. The dip is visible in the live curve within a week, which is the window where a save play can still move the outcome.
How is an adoption curve calculated?
For each week since the account's go-live, divide the number of users on that account who met the active definition during the week by the number of licensed seats on the account at the end of the week. Plot the result on the y-axis against elapsed weeks on the x-axis. The active definition is a saved rule applied the same way across every account, so the slope of the curve is comparable across the whole book of business.
Can an adoption curve go above one hundred percent?
No. The denominator is licensed seats, so the maximum value on the curve is one hundred percent, which represents every licensed user active in the same week. Most healthy curves plateau well below one hundred, because not every licensed user needs to be active every week. If activity exceeds licensed seats, the account is likely sharing credentials or using features that do not require named seats, and the measurement setup needs review.