Markets and business models
Consumer subscriptions
Tiny ACV, low conversion, store fees and emotional churn. Retention and organic growth do the work paid ads cannot.
Subscriptions turn a consumer product into something closer to SaaS: recurring revenue, churn math, unit economics. The differences matter. ACV is tiny. Conversion is low. Stores take a cut. Churn is monthly and emotional.
Concept
ACV here is often $5–$20/month. Freemium conversion is the share of free users who pay — often a rough 2–5% band for many products (category-dependent). Store tax on Apple and Google has historically been about 15–30% of digital goods; rates change, so model current policy.
The constraints
- ACV is tiny. Annual plans at a discount improve cash and retention.
- Conversion is low. 95–98% of users may never pay — they are acquisition fuel, ad inventory or dead weight.
- Platform tax. Web billing can avoid some of the store cut but loses one-tap IAP convenience.
- Churn is monthly. Consumers cancel when the habit breaks, a card declines or a competing app appears. Trial-to-paid and month-1 retention dominate LTV.
Paying users for $10M ARR at $10/month:
$10M / ($10 × 12) ≈ 83,000 payers
At 4% free→paid, free actives ≈ 83,000 / 0.04 ≈ 2.1MThat is why consumer subscription companies obsess over organic growth and retention: paid CAC at consumer ARPU often does not pay back unless LTV is long and ads are efficient.
Walking through a trial funnel
50,000 trials/month, 40% trial→paid, $12/month, 8% monthly logo churn among payers.
New payers/month = 50,000 × 0.40 = 20,000
Steady-state payers ≈ 20,000 / 0.08 = 250,000
ARR ≈ 250,000 × $12 × 12 = $36MIf CAC per trial is $8 and 40% convert, CAC per payer = $8 / 0.40 = $20. Gross profit per month at 70% margin ≈ $12 × 0.70 = $8.40 → payback ≈ 20 / 8.40 ≈ 2.4 months — healthy if those assumptions hold. Raise CAC to $25/trial and payback blows past a year.
A second sketch with store fees:
Price $10/month, store fee ~30% → net ≈ $7/month
Paid lifetime ≈ 8 months → LTV ≈ $56
Blended CAC $35 → LTV/CAC ≈ 1.6× (fragile)
Blended CAC $15 → LTV/CAC ≈ 3.7× (healthier)Moving lifetime from 8 to 12 months lifts LTV 50% with no new creatives. Retention work is growth work.
AI consumer apps often mix subscription tiers with usage credits. All-you-can-eat flat fees collide with inference COGS. Hybrids keep predictable ARPU while metering expensive generation — same logic as usage economics.
Involuntary churn (failed cards) silently erases paid cohorts. Dunning, account updaters and retries are revenue systems.
Common mistakes
- Paid acquisition at consumer ARPU without long LTV or a large organic share.
- Ignoring the store tax. 30% off $10 is $7 of contribution before other COGS.
- Unlimited AI on a $10 plan. The heaviest users become the least profitable.
Check yourself
$10M ARR at $10/month. How many paying subscribers?
About 83,000. $10M / ($10 × 12) ≈ 83,000.
Why does a 4-month longer lifetime beat a new ad creative?
8 → 12 months is +50% LTV with no extra CAC. Retention multiplies every acquisition dollar.
Key takeaways
- Consumer subscriptions live on conversion, churn and store fees.
- Freemium conversion is often low single digits; most users never pay.
- Organic growth and retention are usually the only affordable path at this ARPU.
- Meter expensive AI generation. Do not give power users unlimited inference.
Further learning
Next, how users bring users: consumer virality.