How would plumbers know about the app without advertising?
> Find any plumbing supplier [...] they'll tell their members at no-charge
In other words: They would advertise it.
It's quite clear we are talking about paid advertising, not the broader concept of people saying things.
This app currently has over 100 real reviews online, averaging 4.9 stars out of 5. Retention is nuts - 98% of people who ever started using the product (which has a monthly fee) are still using it. The company is three years old.
Perfect to take off, right? But few industries are actually viral. We just doubled the number of new customers per month using FB ads in the first two months of scaling it out, and we'll scale much further over the next 3.
Anyone who works in start-up growth will tell you the same things I am.
You can certainly pay for eyeballs, the question is whether FB ads are giving users with a retention level high enough to justify the advertising expense. Users from online ads tend to much lower quality than those that come from organic traffic, I would not expect your organic retention numbers to hold.
And yes, all ad spend should be measured against true LTV.
Advertising is a waste money for quality products, only makes sense for inferior ones.