The best Growth Hacking Agencies in Amsterdam

What you are buying

Experimentation across the funnel: acquisition, activation, retention, referral.
A cadence of tests with hypotheses written down before results arrive.
The prerequisite is volume. Below a few thousand relevant events a month, most tests cannot resolve, and the engagement becomes opinion with extra steps.

How it is priced

51%Sprint retainerA fixed number of experiments per month.
28%Embedded teamPeople working inside your product process.
21%Audit and roadmapA one-off review with a prioritised backlog.

Rough share of engagements. An embedded arrangement works when your engineers can ship the winners; without that, experiments queue up and the retainer buys reports.

Running the selection

Ask for three experiments that failed and what was learned. A supplier with only winners is either new or editing.

Establish who can deploy a change to the product, and how long that takes. This single constraint decides whether the engagement can work at all.

Agree the statistics up front: what counts as a result, and who calls it.

Put these in the contract

Tests per month	A committed number, and how many reached a conclusion.
Documented hypotheses	Written before the test runs, not after.
Implementation route	Who ships the winning variant, and within how long.
Retention in scope	Growth work that ignores retention flatters itself.
Knowledge left behind	A readable log of what was tried and what it taught.

Ask before you sign

Do we have enough volume for your tests to conclude?
Tell us about three experiments that failed.
Who deploys a winning change, and how quickly?
What counts as a result, and who decides?
What will we know in six months that we do not know now?

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