Blog · SaaS

THE ARITHMETIC OF YOUR PRODUCT

For products with paying users. Every post takes one number from your product, shows how it is calculated and ends in what moving it is worth.

← All lines

October 5, 2026

→

Product market fit survey: who would miss you

A product market fit survey asks one question: how would you feel without this product? How to run it, the 40 in 100 bar and how to read it by segment.

October 3, 2026

→

DAU MAU ratio: stickiness at the right rhythm

The DAU MAU ratio moves weeks before churn does. The formula, the threshold by usage cadence, and the number you compute from your own data.

October 3, 2026

→

User acquisition: priced at signup, paid at month three

User acquisition, defined for SaaS: three prices of the same user, and why the one that matters is set by product as much as by marketing.

October 2, 2026

→

The aha moment: the threshold, not the example

The aha moment is a 2x retention split you compute from your own cohorts — not a screenshot from someone else's onboarding flow.

September 19, 2026

→

Conversion Rate Optimization Agency: The Traffic Floor

A conversion rate optimization agency bills by the month; a valid test needs a fixed number of sessions. Here's the traffic floor where the math flips.

September 18, 2026

→

SaaS Pricing Strategy: The Switch Cost Number

A SaaS pricing strategy switch has a cost. Here's the ARPU uplift a value-based move must clear before it pays for itself.

September 17, 2026

→

Your positioning statement is not a marketing document

A vague positioning statement doesn't just blur messaging. It lets wrong-fit trials in, and that shows up in your trial-to-paid rate.

September 16, 2026

→

User Onboarding Best Practices: Price the First Session

User onboarding best practices need a revenue test. Calculate what one activation point adds to MRR before paying for a first-session redesign.

September 15, 2026

→

SaaS churn rate: the denominator that flatters it

SaaS churn rate explained: the starting-base formula, two reporting traps, and what cutting monthly churn by one point preserves on a €50,000 MRR base.

September 14, 2026

→

Time to value: the formula, and the day it decides churn

Time to value is the formula that predicts trial-to-paid conversion. The threshold day, one worked cohort, and the number your own data gives you.

September 11, 2026

→

North Star Metric: The Vanity Metric Trap

A north star metric only works if it moves with revenue. Here's the ten-week test that tells you if yours is vanity in disguise.

September 7, 2026

→

Customer retention rate formula: what one point is worth

The customer retention rate formula is ((E−N)/S)×100. Calculate it on your own numbers and price what one percentage point costs you in ARR.

August 31, 2026

→

Product led growth: what it costs, and what it returns

Every SaaS founder says PLG is cheaper than sales. The arithmetic usually disagrees — until you know which number to move. Here is the equation.

The next step is five days long.

$500. Zero commitment. Yours either way.

Book the Activation Audit See how we work

Flamel · 2026