Free SaaS Metric Calculators in 2026: LTV, MRR, Churn — All Compared

If you run a SaaS product, subscription box, or any recurring-revenue business, you’re making pricing and growth decisions based on metrics that most accounting software doesn’t surface cleanly. LTV, MRR, churn, CAC payback period — you either know these numbers or you’re flying blind on what growth actually costs.

I spent time testing both the dedicated SaaS analytics platforms and the standalone calculators that promise to give you these numbers free. Here’s the honest picture of what each delivers — and where each falls short.

Short on time? The tool I keep coming back to is the DDH Customer Lifetime Value Calculator Pro — it’s free to try for 14 days, no card. The full breakdown is below.

Why SaaS Metrics Are Worth Tracking Precisely

The difference between a 3% monthly churn rate and a 5% monthly churn rate isn’t 2 percentage points — it’s the difference between a business with 3 years of average customer lifetime and one with less than 20 months. That gap changes your entire acquisition budget, your LTV:CAC ratio, and whether your business model is viable at your current pricing.

Most SaaS founders I talk to know their MRR. Far fewer know their actual LTV, their true churn by cohort, or their CAC payback period by acquisition channel. These aren’t vanity metrics — they’re the numbers that tell you whether you’re building a business or burning cash toward a ceiling.

Baremetrics: Best for Connected MRR/Churn Data

Baremetrics is purpose-built for SaaS analytics and connects directly to Stripe, Braintree, and other payment processors. When it’s connected to real transaction data, it generates accurate MRR, ARR, churn rate, LTV, and ARPU automatically — updated in real time. The free tier was discontinued; paid plans start around $58/month based on MRR.

The honest limitation: Baremetrics is designed for businesses with structured subscription data already flowing through a supported payment processor. If you’re pre-revenue, on a different billing setup, or want to model scenarios before you have clean data, Baremetrics can’t help you.

ChartMogul: Similar Positioning, Similar Gap

ChartMogul is Baremetrics’ main competitor in the connected-data SaaS analytics space. It supports a broader range of data imports including Stripe, Recurly, and CSV uploads. ChartMogul has a free plan for up to $10K MRR, which is genuinely useful for early-stage SaaS companies. Its cohort analysis and segmentation features are strong. Like Baremetrics, it requires actual subscription data to produce useful output — it’s not a calculator, it’s an analytics platform for existing revenue.

ProfitWell (now Paddle Metrics): Free LTV and Churn Tracking

ProfitWell, acquired by Paddle, offers free SaaS metric tracking by connecting to your billing system. For businesses on Stripe, it’s one of the better free options for ongoing metric tracking. The setup requires a Paddle or Stripe connection, and the tool is most useful for active SaaS businesses, not for founders doing pre-launch financial modeling.

SaaS Calculator Sites: Fast but Shallow

There are dozens of free LTV and CAC calculators scattered across SaaS-focused content sites. Most follow a basic formula: enter ARPU, enter churn rate, get LTV. These are useful for a quick sanity check on a single scenario. The limitations:

• No saved data — you lose your inputs when you close the tab
• No scenario comparison — you can’t run “3% churn vs. 5% churn” side by side
• No CAC payback period or LTV:CAC ratio in the same tool
• No connection to revenue projection or pricing analysis

These tools answer one question at a time. Running a real financial model requires multiple questions answered together.

DDH Customer Lifetime Value Calculator Pro: Calculations Without the Data Integration

The DDH Customer Lifetime Value Calculator Pro fills the gap between single-question calculators and full analytics platforms that require live payment data.

You enter your inputs directly: ARPU, monthly churn rate (or customer lifespan), gross margin percentage, and acquisition cost per customer. The calculator outputs LTV, LTV:CAC ratio, CAC payback period, and a summary of whether your current unit economics support growth. You can run multiple scenarios in the same session and compare them.

This is specifically useful for:

• Pre-revenue SaaS founders modeling pricing before launch
• Founders using payment systems not supported by Baremetrics/ChartMogul
• Anyone who wants to model “what if we reduce churn by 1%?” without waiting for a pipeline to update
• Investor prep — getting your unit economics clear before a pitch deck conversation

DDH also has MRR/ARR calculators, churn rate analysis tools, and the P&L generator for connecting SaaS metrics to overall business profitability. All 261 tools share one login — you’re not maintaining separate accounts for each metric.

Comparison: Free SaaS Metric Calculators

Tool	Free Tier	LTV Calculation	Churn Tracking	CAC Payback	Requires Live Data	Best For
Baremetrics	No (~$58/mo+)	Yes (from data)	Yes (real-time)	Yes	Yes (Stripe required)	Active SaaS with Stripe
ChartMogul	Yes (under $10K MRR)	Yes (from data)	Yes (cohort analysis)	Yes	Yes (billing integration)	Early-stage SaaS with billing connected
ProfitWell/Paddle	Yes	Yes (from data)	Yes	Partial	Yes (Stripe/Paddle)	Stripe-based SaaS, free ongoing tracking
One-off calculator sites	Yes	Basic formula only	Single input	No	No	Quick single-metric checks
DDH LTV Calculator Pro	14-day trial, no card	Yes (manual inputs)	Scenario modeling	Yes	No — input-driven	Pre-revenue modeling, scenario comparison, non-Stripe setups

How the DDH Customer Lifetime Value Calculator Pro Works

Here’s the three-step process from opening to a complete LTV analysis:

1. Enter your unit economics. Monthly ARPU, monthly churn rate (or expected customer lifespan), gross margin percentage, and customer acquisition cost. All four inputs drive different parts of the output.
2. Run your primary scenario. The calculator outputs LTV, LTV:CAC ratio, monthly gross margin per customer, and payback period. It also flags whether your LTV:CAC ratio is below the 3:1 threshold that most investors and SaaS benchmarks consider sustainable.
3. Run alternatives. Change the churn rate by 1-2 percentage points and see how dramatically LTV shifts. Change ARPU and see how pricing affects payback period. These scenarios take about 30 seconds each to run.

[screenshot: DDH Customer Lifetime Value Calculator Pro showing LTV, LTV:CAC ratio, and CAC payback period with scenario inputs]

The most common insight people get in their first session: their LTV:CAC ratio is significantly below 3:1, which means either their acquisition cost is too high or their churn is too high. That’s a strategic insight that changes what you work on next. According to research from the SBA’s small business guidance, understanding unit economics is one of the most important financial skills for business owners — and most don’t calculate it regularly because the tools are either too complex or too disconnected.

→ Try the DDH Customer Lifetime Value Calculator Pro free for 14 days — see your first result in about 60 seconds, no credit card.

The SaaS Metrics That Move the Needle Most

Not all SaaS metrics matter equally in the early stages. Based on what actually drives decisions for sub-$50K MRR businesses:

MRR growth rate. Are you growing? At what rate? This is the primary signal of whether the business is working at all. Track it weekly in the early stages.

Monthly churn rate. This is the most important operational metric after revenue. A 3% monthly churn compounds to losing 30%+ of your customer base per year. Even a 1% reduction in churn meaningfully extends average LTV. If churn is above 5% monthly, customer success is the highest-impact work you can do — not acquisition.

LTV:CAC ratio. Is each customer acquisition paying for itself? Below 3:1, you’re acquiring customers at a loss on most time horizons. Above 5:1, you may be under-investing in growth. The DDH LTV calculator helps you find where you sit.

CAC payback period. How many months of customer revenue does it take to recover acquisition cost? Below 12 months is healthy; above 18 months is a warning sign that your acquisition cost or pricing needs adjustment.

FAQ: Free SaaS Metric Calculators

What is the best free tool to calculate LTV for a SaaS business?

For businesses with Stripe-connected billing: ChartMogul’s free tier (under $10K MRR) or ProfitWell. For input-based calculation without payment integration, the DDH LTV Calculator Pro handles the full unit economics calculation including CAC payback period and LTV:CAC ratio.

How do I calculate SaaS LTV without Stripe data?

You need four inputs: ARPU, monthly churn rate, gross margin, and acquisition cost. With these four numbers, you can calculate LTV and all related metrics manually or in a tool like DDH that accepts manual inputs rather than requiring a payment integration. The formula: LTV = (ARPU × Gross Margin) / Churn Rate.

What’s a good LTV:CAC ratio for a SaaS business?

The commonly cited benchmark is 3:1 or higher — meaning each customer generates at least three times their acquisition cost in lifetime value. Early-stage SaaS businesses often fall below this while still being viable, especially if churn is decreasing as the product matures. Below 1:1 (LTV less than CAC) is unsustainable at scale.

Can I track SaaS metrics without a dedicated analytics platform?

Yes, at early stages especially. A spreadsheet with monthly data entry works well when you have 50–200 customers. Purpose-built calculators like DDH give you more structure. Dedicated platforms like Baremetrics or ChartMogul become worthwhile when you have enough data history to benefit from cohort analysis and trend visualization — typically around $5–10K MRR.

SaaS Pricing Strategy: How LTV Calculations Should Drive Your Decisions

Most SaaS founders set pricing based on competitive benchmarks or gut feel. That’s not wrong as a starting point — but it leaves money on the table or caps growth unnecessarily. LTV calculations should drive three specific pricing decisions:

1. Your floor price. If your LTV at current churn is $180, you cannot afford a CAC of $200 and survive. LTV sets an absolute floor on what CAC can be at your current pricing. If your LTV is too low to support the acquisition channels you want to use, you either raise prices or reduce churn first.

2. Whether a price increase is worth the churn risk. Raising prices typically increases short-term LTV but may increase churn. DDH’s LTV calculator lets you model both scenarios: “What’s LTV at $29/month with 4% churn?” vs. “What’s LTV at $39/month with 6% churn?” The answer tells you which is actually the better business decision — not which feels better.

3. Which acquisition channels are viable. Google Ads for SaaS might run $50-150 per trial signup. Whether that’s sustainable depends entirely on your LTV. At $120 LTV, a $60 CAC is a 2:1 ratio — below the 3:1 benchmark. At $300 LTV (higher ARPU or lower churn), the same $60 CAC is a 5:1 ratio and highly sustainable. The calculator makes these channel viability decisions data-driven instead of intuition-driven.

Common SaaS Metric Mistakes (and How Calculators Help)

Two mistakes I see SaaS founders make consistently with their own metrics:

Calculating LTV without gross margin. LTV = ARPU / Churn Rate is the common formula — but it ignores the cost of delivering the product. A SaaS product with 60% gross margin has significantly lower actual LTV than the revenue-only formula suggests. The DDH LTV Calculator Pro includes gross margin in the calculation precisely because this matters for real business decisions.

Using an average churn rate instead of cohort churn. Average churn hides cohort behavior. Your first-month churn might be 15% while your month-6+ churn is 2%. A blended average of 5% dramatically overstates LTV for new customers. This is where connected platforms like ChartMogul genuinely outperform calculators — they can show cohort-specific churn, which manual inputs can’t capture. For early-stage businesses without that data yet, the calculator is the right starting tool; for post-Series-A businesses, cohort analysis in a proper analytics platform becomes essential.

Which SaaS Metric Tool Should You Use?

If you have Stripe and more than $5K MRR: connect ChartMogul’s free tier. It will pull your actual data and show you real cohort analysis that no calculator can replicate.

If you’re pre-revenue, on non-Stripe billing, or want to model scenarios without waiting for data to accumulate: DDH’s LTV calculator and the broader SaaS metrics suite give you calculation capability without integration requirements.

If you need small-business financial visibility beyond SaaS metrics — P&L, project profitability, revenue forecasting — see the best small business calculators overview for the full picture. And for the productivity side of running a SaaS product solo, the all-in-one productivity dashboard guide covers what actually helps solopreneur founders stay on top of both their product and their pipeline.

Ready to stop comparing and start using one? Start your free 14-day DDH trial — all 261 tools, one login, cancel anytime.