Retention is the measure of how well a service keeps its users over time - the share still active after a week, a month, a quarter. As the inverse of churn, it is the metric subscription economics ultimately turn on, since a retained subscriber keeps generating revenue while an acquired-then-lost one rarely pays back their acquisition cost.
Analysts study retention with cohort curves that show how each group of new users decays over time, looking for the point where the curve flattens (a stable, habitual base) versus keeps falling. Retention is driven by everything upstream - onboarding, content, discovery, and QoE - which is why it serves as the north-star outcome that engagement and quality metrics feed into.
The handbook · 7 volumes
Fora Soft Video Engineering Handbook
Retention decides whether subscription economics work, and playback quality and discovery both move it. We wrote seven volumes covering the video stack; for retention start with Volume 3 on QoE monitoring and the economics of streaming, then Volume 6 on search over a video archive, with real-time AI features in Volume 7. Written by Nikolay Sapunov, CEO at Fora Soft.
Subscribers leaving after the first month and you cannot see why?
We will review your viewing and QoE data and send a retention plan with the product and playback fixes to test first. 250+ video products shipped since 2005.
