Diagnose a retention problem

To: Leo (Head of Growth) From: PM, Activation Subject: Hold on doubling paid spend — our flat WAU is an activation and win-back issue, not summer seasonality

Leo,

Before we double paid acquisition, we need to look closely at what is happening beneath our top-line WAU. While it looks like a summer slump, the data shows our flat WAU (~52,000) is actually caused by two product and lifecycle changes from August: the Week 5 onboarding change broke new-user habit formation, and the Week 6 win-back campaign is masking that core retention drop with temporary, low-intent resurrected users.

Doubling paid spend right now will pour expensive acquisition into a leaky bucket. Here is the diagnosis and what we should do before scaling spend.

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1. Why it’s not summer seasonality

If summer weather and holidays were driving our flat WAU, we would see a broad dip across all users in July and August, followed by a recovery in September. Instead: * Pre-Week 5 cohorts are rock solid: Users who signed up in Weeks 1–4 retained at ~30% by Week 8 (hitting late August and September) with zero seasonal decay. * Retention is still worsening in late September: Our weekly churned users rose from ~7,100 in early July to 10,279 in Week 13 (Sept 28). Meanwhile, our core `retained_users` (active both this week and last week) have steadily eroded from ~45,000 in Weeks 1–4 down to 41,636 in Week 13.

2. Root Cause #1: The Week 5 shorter sign-up broke long-term activation

In Week 5 (Aug 3), we removed the goal-setting step ("What do you want to achieve, and how many days a week?") to cut sign-up time from 3 minutes to 1. Sign-up completion jumped from 61% to 74%, and Week 1 retention ticked up ~3 percentage points (from ~55% to ~58%).

However, long-term cohort retention collapsed immediately starting with the Week 5 cohort: * Week 4 Retention: Dropped from ~33.8% (Weeks 1–4 cohorts) to ~24.7% (Weeks 5–9 cohorts)—a ~9 percentage point drop. * Week 8 Retention: Dropped from ~30.0% (Weeks 1–4 cohorts) to 19.9% (Week 5 cohort)—a one-third relative loss in long-term retained users.

Why this happened: Stride’s core value is a weekly workout plan. By removing the step where users state their goals and target workout days, we likely broke the mechanism that personalizes their weekly plan and anchors their habit commitment. Furthermore, cutting friction let through lower-intent users who curious-click in Week 1, skewing Week 1 retention up while failing to build a multi-week habit.

The Math: Even with a 21% boost in sign-up completion (61% $\rightarrow$ 74%), a 33% relative drop in Week 8 retention (30% $\rightarrow$ 19.9%) means every 1,000 visitors to our sign-up flow now yields ~19% fewer long-term active users than before Week 5.

3. Root Cause #2: The Week 6 win-back campaign is inflating WAU and churn

Why hasn’t WAU fallen if core retention is down? Because in Week 6 (Aug 10), lifecycle launched the 21-day inactive win-back email offering a free week of Premium: * Resurrected users spiked: `returningusers` jumped from ~990/week (Weeks 1–5) to ~2,600/week (Weeks 6–13)—adding ~1,600 temporary users per week. * They immediately re-churn: Lifecycle data shows only 12% of win-back users remain active two weeks later (compared to 41% of organic returning users). Once their free week of Premium ends, nearly 90% (~1,400 users/week) churn right back out. * This explains why weekly `churnedusers` spiked from ~7,400 in Week 4 to >9,100 in Week 6 and >10,300 by Week 11. We are propping up headline WAU by cycling ~1,600 promo-chasers in and out of the app every week while our true core base (`retained_users`) shrinks by ~3,200 users.

(Note: When we increased paid social by 25% in Week 9, new users grew, W2–W4 cohort percentages held steady at the post-Week 5 levels, and `retained_users` still dropped by another ~500 users over the next four weeks.)

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What we should do before scaling acquisition

1. Hold off on doubling paid acquisition (and revert the 25% Week 9 increase if CAC is inefficient): Right now, 80% of new sign-ups churn by Week 7. Doubling spend at current retention rates will burn budget for a fraction of the LTV we were getting in July. 2. Restore goal-setting to the activation flow (this week): We need to A/B test bringing back the goal and frequency questions immediately: * Variant A (Control): Current 1-minute sign-up. * Variant B (Revert): Original 3-minute sign-up with goal-setting. * Variant C (Deferred Onboarding): Keep account creation fast, but require the goal-setting & weekly schedule commitment immediately before the user starts their first workout or generates their first weekly plan. * Success metric: Net retained users at Week 4 per 1,000 top-of-funnel visitors (not sign-up completion or W1 retention). 3. Fix the win-back mechanic: Giving a free week of Premium to unactivated users doesn't build a habit. We should shift the win-back hook from a temporary paywall unlock to re-establishing a weekly plan (e.g., "Let's reset your weekly schedule—pick 2 days to work out this week"), and track `retainedusers` separately from win-back `returningusers` in our growth reporting.

Once we see Week 4 cohort retention recover back above 32%, we should turn the paid acquisition tap all the way up.

To: Leo, Head of Growth From: PM, Activation Subject: Diagnosis: Why WAU is flat (and why doubling paid acquisition right now will burn cash)

Leo, you suggested doubling paid acquisition to push through flat summer WAU. I’ve dug into the numbers, and the data tells a different story.

Weekly actives are flat (averaging ~52,000 for 13 weeks), but sign-ups are up 30% (from ~6,000 to ~7,800). The issue isn't seasonal churn—it's that our onboarding changes broke cohort retention, and our win-back campaigns are masking the leak.

Doubling down on paid acquisition right now will just pour more water into a bucket with a widening hole. Here is the diagnosis, the evidence, and what we should do instead.

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1. What’s actually happening?

#### A. Onboarding optimization created low-intent users (Week 5) In Week 5, we removed the goal-setting step to cut sign-up time from 3 minutes to 1. Completion jumped from 61% to 74%, and sign-ups grew.

However, look at the cohort data (`weeklysignupcohorts.csv`). For Cohorts 1–4 (pre-change), Week 1 retention hovered around 55%, and Week 4 retention was ~34%. From Cohort 5 onward, Week 1 retention jumped to ~58% (thanks to frictionless sign-up), but Week 4 retention cratered from ~34% down to ~25%.

By removing goal-setting, we optimized for top-of-funnel conversion at the expense of user intent. We are acquiring users who don't know why they are here or what plan fits them, leading them to drop off heavily by week 4.

#### B. Core retention is quietly declining Look at the growth accounting data (`weeklygrowthaccounting.csv`). Total `retained_users` (users active week-over-week) dropped steadily from ~44,800 in Week 1 to ~41,600 in Week 13, a loss of over 3,200 loyal weekly actives.

#### C. Win-backs are masking the bleeding So why is WAU flat if retained users dropped by 3,200? Look at `returning_users`. From Weeks 1–5, returning users averaged ~980 per week. Starting in Week 6 (when the win-back email launched), returning users spiked to ~2,600 per week.

The win-back campaign is successfully dragging churned users back, propping up our headline WAU. But it’s a leaky bucket: lifecycle data shows that only 12% of win-back users are active two weeks later (compared to 41% of organic returning users). They churn right back out.

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2. Why "Summer" isn't to blame

Your theory about summer (outdoors, holidays) would manifest as broad seasonal churn across all cohorts. But our data shows: 1. Older cohorts (1–4) maintained stable long-term retention. 2. The drop in retention is strictly tied to Cohort 5 onwards—the exact week we shipped the shorter sign-up flow.

It is product-led churn, not seasonal.

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3. What we should do instead of doubling paid acquisition

Before we scale ad spend, we need to fix activation and stop relying on expensive band-aids. Let’s execute a 3-step pivot:

1. Re-introduce intent-matching to onboarding (without hurting conversion): We need to qualify users so they receive the right weekly plan. Instead of a heavy 3-minute form, let’s test a lightweight, single-tap goal selector or defer personalization to the end of the first workout. We must restore Week 4 retention from 25% back toward 34%.
2. Refine the win-back targeting: Pumping win-back emails to all churned users after 21 days is bringing back low-intent users who churn in 14 days. Let’s restrict win-backs to users who reached a milestone or completed at least 3 workouts before churning, matching the profile of our 41% organic returners.
3. Optimize the Week 3–4 activation loop: We shipped 40 new routines in Week 3, but post-onboarding drop-off is neutralizing it. We need to focus activation efforts on guiding new users to these routines before they hit the Week 3 cliff.

Bottom line: Let's hold off on doubling paid acquisition for 4 weeks. If we fix the onboarding leak and improve post-signup intent, organic growth + recovered retention will naturally push us past our WAU plateau without wasting ad dollars on leaky traffic. Let's sync on this today.

To: Leo, Head of Growth From: PM for Activation Subject: Diagnosis: Why WAU is flat and why we shouldn’t double paid acquisition yet

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Executive Summary

WAU is not flat because of summer seasonality. It is flat because of a structural collapse in early habit retention starting in Week 5, which is currently masked by two temporary factors: the Week 6 win-back email campaign and higher sign-up volume.

Our core retained user base has dropped by over 3,200 users, and weekly churn has surged by 44% (from ~7,100 to over 10,200). Doubling paid acquisition today would pour money into an onboarding funnel that currently retains a third fewer users long-term than it did two months ago.

Here is what the data shows and what we should do instead.

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1. The Evidence: The Week 5 Onboarding Change Broke Habit Retention

If summer outdoor seasonality were the culprit, we would expect a gradual, platform-wide decay across all cohorts. Instead, the cohort data reveals an immediate step-change break between Cohort 4 and Cohort 5:

• Cohorts 1–4 (Before Week 5): Week 4 retention was steady at 33.4%–34.2%, flattening to a healthy 30% at Week 8.
• Cohorts 5+ (After Week 5): Week 4 retention plummeted to 24.5%–25.0%, and Week 8 dropped to 19.9%.

This represents a ~33% relative drop in long-term cohort retention.

Why did this happen? In Week 5, we removed the goal-setting step ("What do you want to achieve, and how many days a week?") to cut sign-up time from 3 minutes to 1 minute. While sign-up completion jumped from 61% to 74% and bumped Week 1 retention slightly (55% to 58%), we stripped away the user’s commitment and personal investment.

Stride is a habit product. Without clear goals and a tailored weekly schedule, users drop off rapidly after Week 1 because they lack direction and accountability.

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2. The Illusion: Why Topline WAU Looks Flat

If retention collapsed by a third, why hasn't WAU cratered? Two factors created an artificial floor:

1. Top-of-Funnel Inflow: Sign-ups grew ~30% (boosted by higher sign-up completion and the Week 9 paid budget increase), adding ~1,800 gross new sign-ups per week.
2. The Week 6 Win-Back "Sugar Rush": The win-back campaign added ~1,600 returning users per week (jumping from ~1,000 to ~2,600 in growth accounting).

However, this resurrected volume is extremely low-quality: * Historically, 41% of organic returning users were still active two weeks later. * For win-back users, only 12% remain active after two weeks.

We are cycling low-intent, discount-incentivized users who churn almost immediately. Meanwhile, underlying retained users dropped from 45,074 (Week 3) to 41,636 (Week 13), while churn surged from 7,116 to 10,279 per week.

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3. What Happens If We Double Paid Acquisition Now?

Doubling paid acquisition right now will accelerate cash burn without growing the business:

• Impaired Unit Economics: With Week 8 retention down from 30% to 20%, LTV has dropped sharply. Premium conversion will suffer because fewer users build the 3-week habit required to see the value of paid features.
• Higher CAC for Diminishing Returns: Scaling paid spend when the conversion engine is degraded will cause CAC to rise while payback periods stretch unsustainably.
• A Leaky Bucket: In Week 13, we added 7,847 new users and churned 10,279. Adding more sign-ups does not fix a machine that is churning users faster than it can onboard them.

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4. Recommended Action Plan

Before increasing ad spend, we need to plug the leak and fix activation.

1. Reinstate and Optimize Goal-Setting (Immediate): * Re-introduce the goal-setting and schedule-commitment step in onboarding, framed as building the user's "Personalized Weekly Plan." * Test progressive onboarding: let users quickly select goals without friction, but ensure their first workout calendar is anchored before Day 1. * Target: Return Week 4 retention to ≥33%. 2. Re-evaluate Win-Back & Lifecycle Spend: * Stop relying on the 21-day "free Premium week" email to prop up WAU. Shift CRM focus to Days 1–7 activation, reinforcing the weekly plan set during onboarding. 3. Hold Paid Social at Current Levels: * Keep paid spend flat (or pull back the Week 9 25% increase) until Cohort Week 3/4 retention recovers. 4. Scale Acquisition Once Activation Is Fixed: * Once Cohort Week 4 retention crosses 32% for two consecutive cohorts, we double paid acquisition. At that point, every dollar spent will generate 50% more long-term active users than it would today.