How to measure Trial-to-Paid Conversion

The percentage of users who start a trial and become paying customers.

Trial→Paid = Paid Conversions ÷ Trials Started × 100

Why it matters: The hinge between acquisition and revenue. Small lifts here compound through the whole funnel — and the metric exposes whether your activation, not your top-of-funnel, is the bottleneck.

6 tools that produce Trial→Paid

Side-by-side: how each tool produces this number, what to read before adopting, and where to find the official docs. Saasly does not integrate with these tools — this is a reference so you can pick the right one for your stack.

ToolCategoryHow it produces Trial→PaidPricing
RevenueCatMobile subscriptionSDK / integrationFree up to $2.
AdaptyMobile subscriptionSDK / integrationFree up to $10K MTR; then ~$249/mo for Pro.
MixpanelProduct analyticsComputed (SQL / export)Free up to 1M events/month; from $24/mo (Growth) to enterprise.
AmplitudeProduct analyticsComputed (SQL / export)Free up to 50K MTU; from $49/mo (Plus).
PostHogProduct analyticsComputed (SQL / export)Free up to 1M events/month; usage-based after.
Saasly CalculatorManual calculatorManual entryFree forever, no signup.

Per-tool: what to know before you plug it in

RevenueCat

SDK / integration

Mobile subscription

Cross-platform mobile subscription SDK with analytics for iOS, Android, and web in-app purchases.

Before you adopt: Trial conversion is a first-class RevenueCat chart across App Store / Play Store. A conversion only counts after the trial period ends and the first paid renewal clears — so the current period's rate stays incomplete until in-flight trials resolve.
Pricing: Free up to $2.5K MTR; then 1% of tracked revenue.
Official docs for Trial→Paid RevenueCat home

Adapty

SDK / integration

Mobile subscription

Mobile subscription analytics with paywall A/B testing engine.

Before you adopt: Adapty reports trial → paid conversion per paywall variant, so you can see which paywall lifts conversion — its core A/B testing use case. As with RevenueCat, the rate for recent cohorts is provisional until each trial completes its first paid renewal.
Pricing: Free up to $10K MTR; then ~$249/mo for Pro.
Official docs for Trial→Paid Adapty home

Mixpanel

Computed (SQL / export)

Product analytics

Event-based product analytics for funnels, retention, and cohort analysis.

Before you adopt: Build a funnel from 'trial started' to 'subscription started' to get conversion rate by segment. Mixpanel sees the product events but not the billing source of truth — reconcile the paid step against Stripe / RevenueCat so a tracking gap doesn't undercount conversions.
Pricing: Free up to 1M events/month; from $24/mo (Growth) to enterprise.
Official docs for Trial→Paid Mixpanel home

Amplitude

Computed (SQL / export)

Product analytics

Event-based product analytics with strong cohort and behavioral retention tooling.

Before you adopt: Use a funnel chart from trial start to paid event for conversion by cohort or acquisition channel. Amplitude tracks the behavioral steps but not billing — confirm the paid event against your billing system so missed events don't understate conversion.
Pricing: Free up to 50K MTU; from $49/mo (Plus).
Official docs for Trial→Paid Amplitude home

PostHog

Computed (SQL / export)

Product analytics

Open-source product analytics with self-hosting option.

Before you adopt: Build a funnel from trial start to paid event. PostHog sees product behavior, not billing — verify the paid step against your billing system so a tracking gap doesn't undercount conversions.
Pricing: Free up to 1M events/month; usage-based after.
Official docs for Trial→Paid PostHog home

Saasly Calculator

Manual entry

Manual calculator

Manual-entry calculator that computes the core SaaS metrics with Skok-tier classification.

Before you adopt: Enter trials started and paid conversions — get trial-to-paid conversion rate with benchmark context. Best as a quick check before you've wired a product-analytics funnel to track it continuously.
Pricing: Free forever, no signup.
Official docs for Trial→Paid Saasly Calculator home

Already have your numbers? Run the math.

The Saasly Calculator computes Trial→Paid (and 15 other SaaS metrics) from manual input — useful when you've pulled the underlying numbers out of one of the tools above and want a quick sanity check with industry benchmark percentiles.

Open the calculator

Other metrics

How to measure Customer Lifetime Value
The total gross profit a single customer is expected to generate over their entire relationship with you.
How to measure Customer Acquisition Cost
The fully-loaded cost of acquiring one paying customer in a given period.
How to measure Monthly Recurring Revenue
The normalized monthly value of every active subscription, regardless of billing period.
How to measure Customer Churn Rate
The percentage of customers who cancel in a given period. Counts logos, not dollars.
How to measure Net Revenue Retention
How much revenue a cohort of existing customers generates compared to where they started — including expansion, contraction, and churn.
How to measure CAC Payback Period
The number of months of gross profit from a customer required to recover the cost of acquiring them.
How to measure SaaS Quick Ratio
The ratio of revenue gained (new + expansion) to revenue lost (churn + contraction) in a period.
How to measure Magic Number
Annualized net-new ARR generated for each dollar of the prior quarter's sales & marketing spend.
How to measure Gross Margin
The percentage of revenue left after the direct cost of delivering the service (hosting, support, payment fees, third-party APIs).
How to measure Net Promoter Score
A survey-based score from the 0–10 'how likely are you to recommend us?' question, taking promoters (9–10) minus detractors (0–6).
How to measure DAU/MAU Ratio
The share of monthly active users who use the product on a given day — the standard 'stickiness' measure.