Author
Thomas Kraaibeek
Founder of CronLoom and one of the managing directors of Sprint Zero UG (haftungsbeschränkt) in Münster, the company that runs it. He is responsible for the content of the CronLoom blog and its guides.
Thomas is a software engineer from Münster. He holds an M.Sc. in computer science, started out in IT security and then spent several years as a full-stack engineer on enterprise software.
Since 2023 he has also worked independently for his own clients, building websites and software at fixed prices and by the hour. The guides come from the questions that work raises: which rate holds up, how many hours a fixed price really buys, and which client pays what per hour.
Elsewhere: linkedin.com
How the guides are written
- Each guide starts from a question freelancers search for, checked against what already answers it.
- Every number is worked out in the text, linked to a dated source, or marked as an assumption.
- Examples are labelled as examples. What a guide says about CronLoom is true of the shipped product.
- The English and German versions are written separately, each for the words people search in that language.
- Thomas reviews every guide before it is published.
Guides
- Freelance broker or direct client: who pays more per hour? Sep 28, 2026
- Context switching between clients: the cost in hours Sep 20, 2026
- What freelance proposals cost you, counted in hours Sep 18, 2026
- Minimum fee for small freelance jobs: how to work it out Sep 14, 2026
- How to estimate a freelance project: your overrun factor Sep 2, 2026
- Why the first project with a new client pays the worst Sep 1, 2026
- How many hours should a freelance retainer include? Aug 29, 2026
- Rush fee for freelancers: what a tighter deadline costs Aug 28, 2026
- What a late-paying client costs you, counted in hours Aug 26, 2026
- What a freelance discount really costs: price it in hours Aug 24, 2026
- Fixed-price projects: work out the hour budget first Aug 23, 2026
- Which freelance clients are profitable? Rank by the hour Aug 22, 2026
- Floor rate vs effective rate: your minimum hourly rate Aug 21, 2026
- Billable vs non-billable hours: your utilization rate Jun 3, 2026
- Fixed-Price vs Hourly Billing for Freelancers: How to Choose Jun 3, 2026
- How to raise your freelance rates, and on which clients Jun 3, 2026
- Freelance day rate: how to set it from your hourly rate Jun 3, 2026
- How to Track Billable Hours Across Multiple Clients May 20, 2026
- How to calculate your freelance hourly rate May 12, 2026