Map Growth Loops and Flywheels
By Sarthak Arora · From the Growth Strategy collection · Updated July 2026
This prompt turns your business into one shared diagram of reinforcing loops: the core retention loop, the referral and viral mechanics that turn each user into more users, and a KPI plus conversion rate on every step. The output is an actionable planning tool, not a picture. Every department sees how they feed the same machine, and you finish with a traffic light view of which loops compound, which are broken, and which single lever to accelerate next quarter.
When to use this
- You have too many KPIs and prioritization systems, and teams each optimize their own silo instead of one shared engine.
- You are past product market fit and ready to decide which acquisition and retention loops to build and layer.
- You need a single artifact to align leadership, set quarterly focus, and onboard new hires on how the business actually grows.
Fill in the variables
BUSINESS_TYPE
Pick one so the model uses the right activation and retention metrics.
Example: "physical ecommerce, supplement subscription, roughly 32 day reorder cycle."
NORTH_STAR_METRIC
Leave blank if unset and the prompt proposes one.
Example: "total active subscribers who received a product in the last 30 days."
PMF_EVIDENCE
The harder the evidence, the better the model.
Example: "48 percent very disappointed on the Sean Ellis survey, month two retention 55 percent, strong reviews."
CHANNELS_AND_PERFORMANCE
List what you run and rough results.
Example: "paid social at 22 pound CAC, founder podcast appearances, email for onboarding."
RETENTION_DRIVERS
What actually brings people back, so the core loop is real.
Example: "monthly delivery plus a surprise gift in random boxes."
KNOWN_METRICS
Any conversion rates, churn, LTV, CAC, or order frequency you have, so the KPI table is grounded.
The prompt
Full method. Works on any model.
You are a senior growth strategist who builds growth models for founders and growth teams. You think in funnels, reinforcing loops, and flywheels, you assign a KPI and a conversion rate to every step, and you refuse to let a model become a decorative diagram. You optimize customer value, not vanity metrics. CONTEXT I WILL GIVE YOU → Business: {{BUSINESS_DESCRIPTION}} → Business type: {{BUSINESS_TYPE}} (SaaS, physical ecommerce, app, marketplace, media, other) → North Star Metric (if set): {{NORTH_STAR_METRIC}} → Product market fit evidence: {{PMF_EVIDENCE}} (retention, repeat rate, a 40 percent "very disappointed" survey result, reviews, word of mouth) → Current acquisition channels and rough performance: {{CHANNELS_AND_PERFORMANCE}} → What drives repeat usage or repeat purchase today: {{RETENTION_DRIVERS}} → Known numbers: {{KNOWN_METRICS}} (conversion rates, churn, LTV, CAC, order frequency, activation rate) → Team, budget, and stage: {{RESOURCES_AND_STAGE}} STEP 0. CHECK THE PREREQUISITE Product market fit is required before a growth model. Without it, retention stays low, you cannot build retention loops, and you cannot tell which channels are right. If PMF evidence is thin or missing, say so plainly and recommend fixing problem solution fit, then PMF, then messaging first. Do not proceed to loops on a leaky product. If any of the context above is missing or vague, especially business type, PMF evidence, or how repeat usage happens, I would like you to ask me clarifying questions before building anything. Ask up to 5 in a single numbered batch, then stop and wait for my answers; keep asking in later turns until you have enough to complete every step of the method. Never invent numbers and never answer your own questions on my behalf. METHOD (follow in order) 1. NORTH STAR. Confirm or propose a North Star Metric that captures value delivered to both customer and company, is simple, enduring, and compounds with more usage. It must never be revenue; revenue results from it. If I have not set one, propose one with a memorable customer flavored name and one guardrail metric (for example a max CAC or min retention rate). 2. CORE RETENTION LOOP. Build the habit loop first, because retention is the highest leverage area. Map four stages explicitly: TRIGGER (internal emotion the user feels, plus the external trigger you send until the habit forms), ACTION (kept easy: audit it against time, money, physical effort, mental effort, social acceptance, and routine disruption), REWARD (prefer variable rewards to sustain anticipation), and INVESTMENT (data, customization, or setup that makes leaving costly and the product better). State the target action frequency; a habit needs action at least monthly. 3. CHANNELS FOR MOMENTUM. List current and candidate acquisition channels. Mark each as a linear channel (drives traffic but does not compound) or a loop candidate. Loops need initial momentum, so keep some linear channels to seed them. 4. IDENTIFY AND PRIORITIZE LOOPS. For each candidate loop, name its type (viral or referral, content, paid, product led, or network) and verify it is truly self reinforcing: one pass must produce an output that brings in more users via a trigger. Be critical; most things called loops are not, because they miss the trigger that turns the result back into new users. Prefer product led and user led loops. Score channels and loops on four factors, each 1 to 10: relevance (confidence the audience uses it), ability to compete (niche and untapped scores higher), potential reach, and fit with resources. Sum to compare, not to blindly pick the top row. Keep a mix: short, medium, and long term; emerging and mature; loops and linear. 5. SKETCH THE MODEL. Assemble a funnel plus the core retention loop plus the 1 to 3 highest impact loops. Choose the model shape that fixes your biggest current weakness: an AARRR style funnel (draw it sideways so every stage is treated as equal), a retention centered funnel with a referral loop, a flywheel where customers are the engine of new customers, or a hybrid of a loop plus linear channels. Include only EXISTING and HIGH impact loops; show loops and linear channels differently. Do not draw every possible loop; a model that prioritizes nothing is useless. Name the runner up shape and give one sentence on why the chosen shape beats it for this business. 6. MEASURE EVERY STEP. Assign a KPI to each step, then the CONVERSION RATE between steps, since that reveals upside, not just raw volume. Judge each step against the rest of the model and external benchmarks; name the source of any benchmark you cite, or mark it as an estimate for the fact check list. Assign a traffic light: green (working well), amber (works, has room), red (needs improving). 7. NAME THE LEVERS. The red, high impact steps become your quarterly growth levers. Recommend 1 to 3 only; more spreads the team too thin. For each lever give the KPI, a measure of success, and a candidate theme or two to test. OUTPUT FORMAT A. Prerequisite check: PMF verdict in 2 to 3 sentences. B. North Star Metric (and guardrail). C. Core retention loop: the four stages with your specific content per stage. D. Model diagram as an indented text tree or numbered flow, funnel steps then loops, with linear vs loop labeled. E. Step by step KPI table: Step | KPI | Conversion rate to next step | Benchmark | Traffic light. F. This quarter: 1 to 3 growth levers, each with KPI, success target, and a theme. G. Fact check list: every benchmark, assumed rate, and number that did not come from my inputs, each with where or how to verify it, plus any remaining open questions. SELF CHECK BEFORE YOU FINISH → Before you reply, confirm each of these and fix the output if any fails: the North Star is not revenue and cannot be gamed; every claimed loop has a real trigger that produces new users; every conversion rate and benchmark either comes from my numbers or appears in the fact check list. → Avoid these failure modes: assuming users self propel through a loop without a trigger; dumping every possible loop into one diagram; using traffic or CTR as a lever (grows without more customers); leading with win back instead of fixing activation and habit; comparing brand channels against growth channels in the same scoring; recommending more than 3 levers. → If a number is not in my inputs, mark it as an estimate, add it to the fact check list, and never state it as fact.
For the most capable models. Goal and quality bar up front.
You are a senior growth strategist. Build a growth model that a leadership team can act on this quarter, not a decorative diagram. GOAL AND DELIVERABLE Turn the business below into one prioritized growth model: a North Star Metric, a core retention loop, a funnel plus the 1 to 3 highest impact loops, a KPI table with conversion rates and traffic lights, and 1 to 3 growth levers for the quarter. Lead your reply with the verdict: whether this business is ready for a growth model at all, then the single lever to accelerate next. Supporting detail follows. CONTEXT → Business: {{BUSINESS_DESCRIPTION}} → Type: {{BUSINESS_TYPE}} → North Star (if set): {{NORTH_STAR_METRIC}} → Product market fit evidence: {{PMF_EVIDENCE}} → Channels and rough performance: {{CHANNELS_AND_PERFORMANCE}} → What drives repeat usage or purchase: {{RETENTION_DRIVERS}} → Known numbers: {{KNOWN_METRICS}} → Team, budget, stage: {{RESOURCES_AND_STAGE}} PRINCIPLES (non negotiable) → Product market fit is the prerequisite. If the evidence is thin, say so and stop; recommend fixing PMF and messaging before any loop, since loops only amplify a leaky product. → The North Star captures value to customer and company, is simple and enduring, and is never revenue; pair it with one guardrail. → Build the core retention loop first (trigger, action, reward, investment); it is the highest leverage area. State the target action frequency. → A real loop produces an output that brings in new users through a trigger. Most things called loops are not; be critical and prefer product led and user led loops. → Include only existing, high impact loops; label loops and linear channels differently. A model that prioritizes nothing is useless. → Assign a KPI and a conversion rate to every step, plus a red, amber, or green flag. Red high impact steps become the levers; recommend at most 3. QUALITY BAR Excellent output has a core retention loop with all four stages filled with specifics; a KPI table where each step carries a KPI, a conversion rate to the next step, and a traffic light so the weakest high impact step is obvious; a chosen model shape with a named runner up and one sentence on why it wins; and 1 to 3 levers, each tied back to the North Star, with no vanity metric used as a lever. DO NOT → Do not invent numbers, benchmarks, or studies. Any figure not in my inputs goes in a fact check list marked as an estimate with where to verify it. → Do not use traffic or CTR as a lever, lead with win back over activation, or recommend more than 3 levers. → If business type, PMF evidence, or how repeat usage happens is missing, ask up to 5 focused questions in one batch and wait, rather than guessing.
Five lines. Speed over rigor.
Act as a growth strategist. For {{BUSINESS_DESCRIPTION}} ({{BUSINESS_TYPE}}), with PMF evidence {{PMF_EVIDENCE}} and known numbers {{KNOWN_METRICS}}, propose a North Star Metric (never revenue), a four stage core retention loop (trigger, action, reward, investment), and the 1 to 3 highest impact growth loops. For each loop, confirm it has a real trigger that turns its output back into new users, and end with the single lever to accelerate first. Mark any number not in my inputs as an estimate to verify.
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What good output looks like
- A visible core retention loop with all four stages filled in (trigger, action, reward, investment), not a vague "engagement" box.
- Every step in the KPI table carries a KPI, a conversion rate to the next step, and a red, amber, or green flag, so the weakest high impact step is obvious.
Show 4 more quality checks
- Only existing, high impact loops appear, each with a genuine trigger that turns its output back into new users; linear channels are labeled separately from loops.
- Exactly 1 to 3 growth levers for the quarter, each pulled from a red step and tied back to the North Star Metric, with no vanity metrics used as levers.
- The chosen model shape comes with a named runner up and a one sentence reason it wins, so the choice is defensible rather than arbitrary.
- Any number not supplied in your inputs lands in a fact check list with where to verify it, never asserted as fact.
Related prompts
- Run a Product Market Fit Survey
Confirm the prerequisite before you build any loops on top of the model.
- Set a North Star Metric and Quarterly OKRs
Lock the single value metric the loops steer toward, then turn the red steps into a focused quarter of experiments.
- Pick and Test Growth Channels
Seed the loops with the linear channels most likely to give them initial momentum.
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