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Learning about the metrics that drive successful products


The Cost Per Acquisition (CPA) measures the costs associated with acquiring one new paying customer for your product

1 minute read

Cost Per Acquisition (CPA) is an important measure looking at the costs associated with acquiring a new paying customer for your product. It is a term heavily used in marketing, where the costs of a particular campaign can be directly associated with the resulting sales coming from the marketing activity.

Customer lifespan

Customer lifespan is the average length a user uses your product for, before ceasing and using an alternative

1 minute read

Customer lifespan measures the average length of usage for active users of your product. So, if a new user joins in Jan 2015 and stops using in Jan 2019 then their lifespan has been 4 years. When looked at as an average across all your users you get a sense for the stickiness of your product.

Python for Product Managers

Check out all the posts in the Python for Product Managers series:

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Hey, I'm Joshua, a Product Manager and data fan. This is my blog and a place to post random musings and tutorials.