Best Churn Analytics Tools for Solo SaaS Founders (2026)
Six churn analytics tools fit solo Stripe SaaS founders: Stripe's free Customer Portal captures cancellation reasons, ProfitWell Metrics syncs Stripe revenue with no cap, ChartMogul stays free under $120K ARR, PostHog tracks product behavior at 1M events free, Baremetrics syncs Stripe at $99/month with alerts, and RetentionCheck synthesizes cancellation feedback into actions. Start with Stripe Portal + ProfitWell (both free), add PostHog when you need product context, upgrade to Baremetrics when you need revenue forecasts or alerts. Churnkey ($250+/mo) waits until cancellation volume justifies automation—usually $25K+ MRR.
Running churn analysis on a tight budget is the default state at indie SaaS scale. The good news: the five free-tier churn tools available in 2026 cover 80% of the questions solo founders ask. The trick is knowing which free tier to pick, where the cap sits, and when—if ever—to upgrade.
This guide ranks the six tools that matter for solo Stripe SaaS founders. Each entry covers what's free, what the tier cap is, and what to do when you hit it.
What "Free" Means in Churn Analytics
Free tiers in analytics fall into two buckets. One: free forever, no cap—you can grow to $100K MRR without upgrading (ProfitWell Metrics, Stripe Portal). Two: free tier with a cap—you outgrow it, then you upgrade or switch (ChartMogul at $120K ARR, PostHog at 1M events/month).
The mistake is treating capped free tiers as "free forever." ChartMogul is not free at $50K MRR, even if you're using the free plan. It will stop syncing once you cross $120K ARR. Plan for that moment before it arrives.
1. Stripe Customer Portal Cancellation Reasons (Free)
What it is: Built into every Stripe account. Free cancellation reason capture, no setup code required, works on all subscription models.
What's free: Cancellation flow with up to 8 reason options, optional customer comment field, reasons attached to subscription object in Stripe, full API access to reason data. Works with both Checkout and Customer Portal flows. No monthly cost.
What's not free: Stripe does not aggregate, analyze, or summarize the reasons. You get raw data; you do the synthesis yourself. No dashboards, no reporting, no automated insights. No save-offer logic or win-back automation.
Best for: Every Stripe founder from the first paid customer onward. This is foundational—enable it before you have churn to analyze. The data compounds weekly.
When to upgrade: Never upgrade Stripe itself. Instead, layer a tool on top: RetentionCheck (free tier) to synthesize reasons, Baremetrics ($99/mo) to see churn rates alongside reasons, or Churnkey ($250+/mo) to automate win-back flows.
2. ProfitWell Metrics by Paddle (Free Forever, No Cap)
What it is: Free SaaS metrics dashboard from Paddle (formerly ProfitWell). Auto-syncs with Stripe, Paddle, Braintree, Recurly, Chargebee, and Zuora. One of the cleanest revenue dashboards available.
What's free: MRR, ARR, churn rate, customer count, ARPU, gross and net revenue retention, customer churn, MRR churn, plan-level breakdowns, cohort retention curves. Unlimited revenue, unlimited customers, unlimited time horizon. No tier cap.
What's not free: ProfitWell Retain (automated cancellation win-back flows) is paid starting at $500/month. Recognized (revenue recognition accounting module) is paid. Free tier has no scheduled reports or Slack alerts; you check dashboards manually or build email summaries yourself.
Best for: Stripe SaaS at any revenue who want a clean revenue dashboard without paying. ProfitWell Metrics is the cheapest path to a single revenue source of truth.
When to upgrade: Never for metrics alone. Add Retain only if you're closing 5+ cancellations per week and willing to invest in automated win-back (usually $25K+ MRR).
3. ChartMogul Free Tier (Under $120K ARR)
What it is: Subscription analytics platform with one of the cleanest UIs in the category. Free tier auto-syncs Stripe, Paddle, Braintree, Recurly, and Chargebee.
What's free: MRR, ARR, churn rate, growth rate, customer journey timeline, cohort retention analysis, plan tier breakdowns, customer count. Up to $120K ARR (roughly $10K MRR). One workspace, no team seats, no API.
What's not free: ChartMogul Cancellation Insights (in-app survey capture on cancellation) is paid. Custom customer segments require paid plan. Forecasting and advanced cohort analysis are paid. API access is paid. Above $120K ARR, the free plan stops syncing; you must upgrade or migrate.
Best for: Founders under $10K MRR who prefer visual dashboards and cohort curves over spreadsheets. ChartMogul's customer journey timeline is especially useful for understanding who churned and when.
When to upgrade: At $120K ARR or when you need cancellation reason capture in the same tool. Paid entry plan starts at $249/month.
4. PostHog Free Tier (1M Events/Month)
What it is: Open-source product analytics. Free tier covers behavior tracking, session recordings, feature flags, and surveys. Run on PostHog Cloud (managed) or self-host (unlimited events if you run infra).
What's free: 1 million events per month, 5,000 session recordings, unlimited feature flag requests, 250 surveys. Full dashboard, custom events, funnels, retention curves, cohort builder. All available in free tier.
What's not free: PostHog Cloud: cross 1M events and you pay roughly $300/month for 2M events. Self-hosted: free forever but requires running Postgres, ClickHouse, and maintaining infrastructure yourself.
Best for: Founders who need to see what users do inside the product—where onboarding drops, which features get adopted, where users pause before canceling. Answers "why they left" before they tell you in a cancellation reason.
When to upgrade: When you cross 1M events per month on Cloud and want to stay managed. Self-hosted pays forever.
5. Baremetrics ($99/Month)
What it is: Purpose-built SaaS metrics and analytics for Stripe, Paddle, and Braintree. Auto-syncs revenue, forecasts MRR, sends weekly Slack alerts, segments churn by cohort.
What's free: No free tier. $99/month is the floor.
What's not free: The $99/month entry plan includes MRR forecast, churn tracking, customer segments, Slack alerts, and basic reporting. Dunning recovery (retry failed payments) is an add-on. API access and custom views require higher tiers.
Best for: Stripe founders at $10K+ MRR who need forecasting ("what's MRR in 90 days if current churn holds?") and weekly Slack alerts. Faster to onboard than building the same queries in PostHog. Better UX for founders who prefer dashboards to SQL.
When to upgrade: You're already on the entry plan. Higher tiers unlock API, more integrations, and team seats.
6. RetentionCheck ($0-249/Month)
What it is: Weekly churn synthesis tool. Paste cancellation feedback (from Stripe Portal or anywhere else), get AI-powered churn drivers ranked by severity, Churn Health Score (0-100 letter grade), and customer quotes backing each insight.
What's free: Three churn analyses per month, no signup required. Cancellation reason synthesis, top 5-8 drivers ranked by severity, supporting customer quotes, 0-100 Health Score with letter grade (A+=90+, F=<35).
What's not free: Founder tier ($99/month): unlimited weekly synthesis, Slack integration, team seats, analysis history. Pro tier ($249/month) adds competitor benchmarks ("your churn vs. industry average") and report generation.
Best for: Stripe founders collecting cancellation reasons but lacking time to synthesize them into actions weekly. Turns raw text into one sentence decision per week. Stacks well with Stripe Portal + ProfitWell.
When to upgrade: At $5K+ MRR when weekly synthesis becomes a recurring 90-minute task. Founder tier ($99) converts that time into Slack alerts + team collaboration.
The Solo Founder Stack: Free Through $50K MRR
Start with three: (1) Stripe Customer Portal for cancellation reasons (free), (2) ProfitWell Metrics for revenue truth (free), (3) RetentionCheck free tier for weekly synthesis (three analyses/month).
Add a fourth at $10K MRR: Baremetrics ($99/month) for MRR forecast and alerts, or upgrade RetentionCheck to Founder tier ($99/month) for unlimited weekly synthesis.
Add PostHog (free 1M events/month) when you want behavioral context—"users are canceling after they hit X feature, not because of pricing."
Delay Churnkey ($250+/mo) until you're closing 5+ cancellations per week and the cost of manual outreach exceeds the tool investment.
When Free Is Enough vs. When to Upgrade
Free is enough when:
- You're under $25K MRR and your bottleneck is clarity, not automation.
- Your weekly retention review takes less than 60 minutes.
- You haven't hit a tier cap (ChartMogul at $120K ARR, PostHog at 1M events).
- A paid tool would not change a single action you'd take next week.
Upgrade when:
- You cross a tier cap and the cap blocks a real workflow.
- You need automation a free tier doesn't offer (Slack alerts, forecasts, save-offer flows).
- Your weekly review takes more than 90 minutes because you're stitching data from three free tools.
- A paid tool would let you act on an insight faster than you can today.
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Frequently Asked Questions
▶What's the cheapest way to set up churn tracking for a Stripe SaaS under $5K MRR?
Free: Enable Stripe Customer Portal cancellation reasons (built-in), add ProfitWell Metrics (no cap, syncs Stripe revenue). Total cost: $0. Weekly effort: 30 min to scan cancellation reasons in Stripe Dashboard and document patterns. Add PostHog (free 1M events) when you want to know what users do before they cancel.
▶When should I stop using free tools and upgrade to paid?
At two thresholds: (1) You cross a tier cap (ChartMogul at $120K ARR, PostHog at 1M events). (2) Your weekly retention review takes more than 60 minutes because you're stitching data from multiple tools. A paid tool should save you time immediately or give you a decision you couldn't make before. Don't upgrade preemptively.
▶Is Baremetrics worth $99/month for a solo founder?
Only if: (1) You're at $10K+ MRR (so $99 is <1% of revenue), (2) You want Slack alerts so churn drops into your inbox weekly instead of you checking dashboards, (3) You need MRR forecast 90 days out for hiring/funding decisions. Below $10K MRR, Stripe Portal + ProfitWell stay free and serve the same questions.
▶Do I need RetentionCheck if I'm already using Baremetrics or ChartMogul?
No. RetentionCheck reads cancellation feedback (open text from your Customer Portal) and synthesizes it into insights. Baremetrics and ChartMogul show you churn rates, segments, and cohorts—the numbers, not the words. Use RetentionCheck if you're spending 2+ hours per week manually reading cancellation reasons and want AI to do it. Use Baremetrics if you need forecasts. Use both if you want data + narrative.
▶What's the difference between 'free tier' and 'stays free forever'?
Free tier = you outgrow it (ChartMogul at $120K ARR, PostHog at 1M events). Stays free forever = no cap (ProfitWell Metrics, Stripe Portal). Pick free-forever tools first, add tier-capped tools second when the cap actually blocks you, not preemptively.
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