Jun 17, 2025

The saas founder's false dilemma: acquisition vs. retention (and why you're asking the wrong question)

This article challenges the conventional wisdom around SaaS growth metrics and offers a framework for thinking about user acquisition and retention that actually drives sustainable business growth.

Adam Martelletti

Adam Martelletti

7 min read

Walk into any SaaS founder meetup and you'll hear the same debate:

"Should I focus on acquiring more users or retaining the ones I have?"

It's the wrong question.

And it's costing you money, time, and sanity.

Here's why this binary thinking is broken—and what successful SaaS founders focus on instead.

The Problem with the Acquisition vs. Retention Debate

The question assumes you have to choose. But that's like asking a restaurant owner: "Should you focus on getting customers through the door or making sure they enjoy their meal?"

Both matter. But when they matter depends on what you actually mean by "user."

Because here's the dirty secret most SaaS founders won't admit: not all users are created equal.

The User Hierarchy: What Actually Counts?

Before you can decide where to focus, you need to define what you're measuring. Most SaaS companies track these user types:

1. Freemium Signups

  • What they are: People who created an account

  • What they're worth: Almost nothing (yet)

  • Retention focus: Getting them to activate

2. Free Trial Users

  • What they are: Higher-intent prospects testing your product

  • What they're worth: Potential revenue if they convert

  • Retention focus: Reaching the "aha moment" before trial expires

3. Paid Users (New)

  • What they are: Customers who've paid at least once

  • What they're worth: Your actual revenue

  • Retention focus: Onboarding and early value delivery

4. Churned Users (Under 4 Weeks)

  • What they are: Customers who paid but left quickly

  • What they're worth: Negative (they cost more than they paid)

  • Retention focus: Understanding why they left

5. Retained Users (90+ Days)

  • What they are: Customers who've stuck around and found value

  • What they're worth: Your business foundation

  • Retention focus: Expansion and advocacy

The insight: You can't optimize for "users" generically. You need different strategies for different user types.

The Stage-Based Framework: What to Focus on When

Stage 1: Pre-Product-Market Fit (0-100 Paying Customers)

Primary Focus: High-intent acquisition + rapid learning

You need volume to learn, but not just any volume. Focus on:

  • Quality signups over quantity

  • Getting to "aha moments" faster

  • Understanding why people churn in the first 30 days

  • Iterating product based on early user feedback

Why acquisition matters more: You can't retain what you don't have. You need enough users to identify patterns.

Retention metric that matters: Time to first value (not overall retention rate)

Stage 2: Early Product-Market Fit (100-1,000 Paying Customers)

Primary Focus: Retention optimization + sustainable acquisition

You've proven people want your product. Now prove they'll keep paying for it:

  • Onboarding optimization to reduce early churn

  • Feature usage analysis to identify sticky behaviors

  • Customer success processes for high-value accounts

  • Referral systems from happy customers

Why retention becomes critical: Churn is expensive. Every lost customer costs 5-25x more to replace.

Retention metric that matters: 90-day retention rate and expansion revenue

Stage 3: Scale Mode (1,000+ Paying Customers)

Primary Focus: Retention-driven acquisition

You understand your product and customers. Now it's about efficient growth:

  • Cohort-based acquisition targeting your best customer profiles

  • Expansion revenue from existing customers

  • Customer advocacy programs for organic growth

  • Churn prediction and proactive intervention

Why they're inseparable: Acquisition and retention become the same thing. Happy customers drive growth.

Retention metric that matters: Net Revenue Retention (NRR) and Customer Lifetime Value (CLV)

The Real Question: What's Your Leaky Bucket Problem?

Instead of asking "acquisition or retention," ask:

"Where is my biggest leak, and what's the highest-impact fix?"

Common Leak Points:

1. Signup to Activation

  • Problem: People sign up but never use the product

  • Solution: Better onboarding, clearer value prop, remove friction

  • Focus: Acquisition quality + activation optimization

2. Trial to Paid

  • Problem: Users try but don't convert

  • Solution: Faster time-to-value, better trial experience, pricing optimization

  • Focus: Trial user retention + conversion optimization

3. Early Customer Churn (0-90 days)

  • Problem: Customers pay but leave quickly

  • Solution: Customer success, expectation setting, product improvements

  • Focus: New customer retention

4. Long-term Value Stagnation

  • Problem: Customers stay but don't expand

  • Solution: Feature adoption, upselling, account management

  • Focus: Expansion revenue + long-term retention

The Metrics That Actually Matter

Stop tracking vanity metrics. Start tracking these:

For Early-Stage SaaS:

  • Activation Rate: % of signups who complete key actions

  • Time to First Value: How quickly users get their "aha moment"

  • Trial-to-Paid Conversion: % of trials that become customers

  • 30-Day Churn Rate: % of new customers who leave in first month

For Growth-Stage SaaS:

  • Monthly Churn Rate: % of customers lost each month

  • Net Revenue Retention: Revenue growth from existing customers

  • Customer Acquisition Cost (CAC): Cost to acquire a paying customer

  • CAC Payback Period: How long to recover acquisition costs

For Scale-Stage SaaS:

  • Gross Revenue Retention: Revenue retained from existing customers

  • Net Promoter Score (NPS): Customer satisfaction and advocacy

  • Expansion Revenue Rate: % of growth from existing customers

  • Customer Lifetime Value (CLV): Total revenue per customer

The Compound Effect: Why Great SaaS Companies Do Both

Here's what successful SaaS founders understand:

Acquisition and retention aren't opposing forces—they're compound multipliers.

The Retention-Driven Acquisition Loop:

  1. Happy customers refer others (lower CAC)

  2. Product improvements reduce churn (higher LTV)

  3. Better unit economics enable more acquisition spend (faster growth)

  4. More customers provide more feedback (better product)

  5. Better product increases retention (cycle repeats)

The Acquisition-Informed Retention Strategy:

  1. High-quality acquisition teaches you about ideal customers

  2. Understanding ideal customers improves onboarding

  3. Better onboarding increases retention

  4. Higher retention improves unit economics

  5. Better unit economics enable higher-quality acquisition

The Framework: A Decision Tree for SaaS Founders

Ask yourself these questions in order:

1. Do I have enough users to identify patterns?

  • If no: Focus on acquisition (but quality over quantity)

  • If yes: Move to question 2

2. Are my users reaching their "aha moment"?

  • If no: Focus on activation and early retention

  • If yes: Move to question 3

3. Are my customers staying long enough to be profitable?

  • If no: Focus on retention and churn reduction

  • If yes: Move to question 4

4. Are my unit economics healthy?

  • If no: Focus on retention and expansion revenue

  • If yes: Focus on scaling acquisition

5. Am I growing efficiently?

  • If no: Optimize the entire funnel

  • If yes: You've figured it out—keep doing what works

Case Study: How Slack Solved the False Dilemma

Slack didn't choose between acquisition and retention. They made them the same thing.

Their insight: Teams that send 2,000+ messages have a 93% retention rate.

Their strategy:

  • Acquisition focus: Get teams to 2,000 messages fast

  • Retention focus: Get teams to 2,000 messages fast

  • Product focus: Make sending messages valuable and easy

  • Growth focus: Happy teams invite more teams

Result: Acquisition and retention became one metric—time to 2,000 messages.

The Anti-Pattern: Why Most SaaS Companies Fail

The Acquisition-Only Trap:

  • Focus on signups and trials

  • Ignore activation and onboarding

  • Celebrate vanity metrics

  • Result: High churn, poor unit economics, unsustainable growth

The Retention-Only Trap:

  • Perfect the product for existing users

  • Ignore new customer acquisition

  • Over-optimize for edge cases

  • Result: Slow growth, limited market reach, competitive vulnerability

The Real Trap: Treating them as separate problems instead of interconnected systems.

The Modern SaaS Playbook: Integration Over Isolation

Phase 1: Foundation (Months 1-12)

Goal: Prove people want and will pay for your product

Acquisition Strategy:

  • Target high-intent prospects

  • Focus on quality over quantity

  • Use manual, high-touch sales processes

  • Prioritize learning over scaling

Retention Strategy:

  • Obsess over onboarding

  • Measure time to first value

  • Conduct churn interviews religiously

  • Iterate product based on feedback

Success Metric: Paying customers who stay 90+ days

Phase 2: Optimization (Year 2-3)

Goal: Build predictable, profitable growth

Acquisition Strategy:

  • Systematize what worked manually

  • Build content and SEO for organic growth

  • Implement referral programs

  • Test paid acquisition channels

Retention Strategy:

  • Automate successful onboarding patterns

  • Build customer success processes

  • Create expansion revenue opportunities

  • Implement churn prediction

Success Metric: Positive unit economics and predictable growth

Phase 3: Scale (Year 3+)

Goal: Dominate your market category

Acquisition Strategy:

  • Scale proven channels aggressively

  • Build brand and thought leadership

  • Expand to new customer segments

  • Develop partner channels

Retention Strategy:

  • Proactive customer success at scale

  • Advanced product analytics

  • Predictive churn prevention

  • Customer advocacy programs

Success Metric: Market leadership and sustainable competitive advantage

The Tools That Support Both

For Acquisition:

  • Analytics: Mixpanel, Amplitude for user behavior

  • Marketing: HubSpot, Marketo for lead nurturing

  • Sales: Salesforce, Pipedrive for deal management

  • Content: SEMrush, Ahrefs for organic growth

For Retention:

  • Onboarding: Appcues, Pendo for user guidance

  • Customer Success: ChurnZero, Gainsight for account management

  • Support: Intercom, Zendesk for customer service

  • Analytics: Mixpanel, Amplitude for usage tracking

For Both:

  • Communication: Slack, Teams for internal coordination

  • Data: Segment, Rudderstack for unified tracking

  • Experimentation: Optimizely, LaunchDarkly for testing

  • Feedback: Typeform, Hotjar for customer insights

The Mindset Shift: From Either/Or to Both/And

Old thinking: "Should I focus on acquisition or retention?"

New thinking: "How can I make acquisition and retention reinforce each other?"

The questions that matter:

  • How can happy customers drive more acquisition?

  • How can better acquisition improve retention?

  • What's the minimum viable retention rate for sustainable growth?

  • What's the maximum acquisition cost for profitable growth?

Conclusion: The Integrated Growth Model

The most successful SaaS companies don't choose between acquisition and retention.

They build systems where:

  • Great products drive word-of-mouth acquisition

  • Happy customers become growth engines

  • Retention insights improve acquisition targeting

  • Acquisition feedback enhances retention strategies

The real focus isn't acquisition OR retention.

It's building a business where both happen naturally.

Because at the end of the day, sustainable SaaS growth isn't about choosing sides in a false dilemma.

It's about creating value so consistently that customers can't imagine leaving—and can't stop telling others to join.


Ready to stop choosing between acquisition and retention? Start by measuring what actually matters: the path from signup to long-term value. Everything else is just vanity metrics.