Last updated: 19 October 2026
Terms & Conditions
These terms apply to the services we offer under the name Minimum Viable Funnel Sprint.
1. Scope
These terms apply to all services provided by Jakub Michalski and Dom Nyari (“we”, “us”) under the name Minimum Viable Funnel Sprint, including validation calls, demand-test sprints and related consulting. Where an individual offer or statement of work says something different, the individual offer takes precedence.
2. Validation calls
Booking a validation call is free and non-binding. The call does not create an obligation for either party to start a sprint.
3. Agreement
A sprint starts once both parties have agreed in writing (email is sufficient) on the question to test, success measures, budget, timeline and fees.
4. Fees and payment
Sprint fees are set out in the individual offer. Unless agreed otherwise, invoices are due within 14 days of the invoice date. All prices are net and subject to VAT where applicable.
5. Ad spend and third-party costs
Advertising budgets, software and other third-party costs needed for the test are paid by the client, either directly or reimbursed at cost. They are not part of the sprint fee unless the offer states otherwise.
6. Client cooperation
The client provides the relevant data, account access and approvals in good time. If required input is missing or approvals are delayed, the timeline is extended accordingly.
7. Results
A demand test produces evidence, not a guaranteed outcome. We do not guarantee a specific number of inquiries, sales calls, purchases or a positive result. Our recommendation is based on the results the test produces and the measures agreed in advance.
8. Confidentiality
Both parties treat all confidential information received from the other party as confidential, during and after the engagement.
9. Rights to work results
Once all invoices are paid in full, the client receives the right to use the pages, messages and other assets created for the test. We remain free to use our general methods, know-how and experience in other projects.
10. Liability
We are liable without limitation for intent and gross negligence and for injury to life, body or health. For slight negligence, we are only liable for the breach of essential contractual obligations, limited to the foreseeable damage typical for this type of contract and to the amount of the sprint fee.
11. Cancellation
Cancellation terms for a sprint are set out in the individual offer. Validation calls can be rescheduled or cancelled at any time through the booking link.
12. Final provisions
The law of the Federal Republic of Germany applies. If the client is a merchant, the place of jurisdiction is Berlin, Germany. If any provision of these terms is invalid, the remaining provisions remain in effect.