Growth loops and local go-to-market
A funnel describes how one person goes from stranger to customer. A loop describes how today's customers bring in tomorrow's, so growth compounds instead of being bought one customer at a time. This lesson shows how to map a product's loops, work out what a referral programme really costs, and launch in a new city or district the way products in fast-growing markets did: one dense area at a time, with field agents, offline channels and places to turn cash into digital money.
By the end you can
- Explain the difference between a funnel and a growth loop, and map the main loops of a product
- Calculate a referral loop's yield and its true cost per retained customer
- Choose loops that fit the product: viral, content, paid and sales loops
- Plan a local launch with density first, field agents, offline channels and cash-in points
- Write a launch plan whose gates tie spending to product-market fit
The everyday picture
Two farmers want more maize next year. The first buys seed at the market every season; to grow more, she has to buy more. The second keeps part of each harvest as seed, so every good harvest makes the next one bigger. The first farmer's growth is bought. The second farmer's growth compounds. That is the difference between a funnel and a loop.
The second farmer also knows that seed scattered thinly over ten fields gives ten poor harvests. She plants one field properly, waters it, keeps the birds off, and moves to the next field only when the first one is thriving. Local launches work the same way: density first, then the next field.
From funnels to loops
A funnel (acquisition, activation, retention, revenue, referral) is useful for finding where people drop off, as in Funnels, activation and adoption. But it runs in one direction. In a 2018 Reforge essay, Growth Loops are the New Funnels, Brian Balfour, Casey Winters, Kevin Kwok and Andrew Chen argued that "funnels operate in one direction", so nothing reinvests the output, and growth needs ever more input. A growth loop is a closed system: new users go through a process that produces something, and that output brings in more new users. They also observed that the fastest-growing products are usually powered by one or two major loops.
Most loops are one of four kinds:
- Viral or referral: users invite users. A referral code shared in a chat group; a shared cart that a friend opens and orders from.
- Content: users create things that bring in others. Their essay describes Pinterest: people save and organise pins, Pinterest makes that content findable in search engines, and searchers arrive and start saving.
- Paid: revenue from customers funds ads that bring more customers. It only compounds if a customer earns back more than they cost to acquire (Unit economics).
- Sales: revenue funds sales reps or field agents who sign up more customers, whose revenue funds more reps.
Marketplaces add a fifth: the supply and demand loop. More partner shops and stores close to people mean faster delivery, which brings more customers, whose orders attract more shops (Marketplaces, platforms and moats).
Mapping a loop means writing each step, the conversion at each step, and how long one cycle takes. A loop that converts well but takes three months per cycle grows slowly. A loop with a broken step does not compound at all, however good the other steps are.
Quick check
Which of these is a growth loop rather than a one-way channel?
In a loop, the output of one round (new customers) feeds the next round (they share codes too). The billboard, the bank email and the influencer posts bring a batch of people and stop; to get more, you pay again.