Let's run the numbers on your legal compliance tool.
Optimistic scenario. CAC $97 via targeted LinkedIn ads to "SaaS founder" job titles, ARPU $34 (upsells to annual), 18-month retention → LTV $612, LTV/CAC = 6.3. Your 3-month cohort breaks even in month 6.
Realistic scenario. CAC $185 (legal compliance is low-urgency purchase, long sales cycles), ARPU $29, 11-month retention → LTV $319, LTV/CAC = 1.7. Payback 6.4 months, but contribution margin barely covers your $8k/month burn rate.
Pessimistic scenario. CAC $280 (freemium cannibalizes paid conversions, competitive with Termly/TermsFeed at same price), retention 7 months → LTV $203, LTV/CAC = 0.73. You're burning cash on every customer.
Here's what breaks your model: acquisition cost sensitivity. SaaS founders are overwhelmed with compliance tools competing for the same $29 budget slot. Privacy policy generators, GDPR checkers, contract templates — all commoditized. Your CAC will spike because you're selling a "nice-to-have" that competes with free alternatives and DIY legal templates.
Revenue math doesn't work at current ARPU. Even hitting your 8-month payback target means CAC of $232 — that's $23k for your first 100 customers, nearly half your runway. At realistic 15% trial-to-paid conversion from freemium, you need 667 signups for 100 paying customers. That's organic growth or paid acquisition at $35 per signup, which puts you back at $280+ CAC.
Freemium vs trial decision: Skip freemium entirely. Your "2 free analyses" gives away your core value and trains users to expect free legal advice. 14-day trial forces faster buying decisions and higher intent signups.
Bottom line: You need either 60%+ higher ARPU ($45-50/month) or 70% lower CAC ($50-70) to hit sustainable unit economics. Current pricing puts you in the valley of death between free tools and real legal counsel.