Marty Cagan
Inspired and Empowered taught me to check every idea against four risks: value, usability, feasibility and viability.
About
Hi, I'm Daniel: a product lead with a curious mind who loves building.
AI let me test ideas on problems I had wanted to solve. Each build taught me more about using AI. It snowballs: the more I use it, the more I ask of it and the more I learn. Also a reader who keeps a second brain.
Product work and curiosity
In Nov '24 I built my first app, SmartChef, by prompting an AI coding tool page by page. I had no coding background. The app reached the App Store.
My product work runs from understanding a user problem to deciding what to do and checking the result. AI helps me research, challenge assumptions and make that work easier to pick up again.
Side projects gave me room to experiment. Sparktale is live and built with a partner developer. Wellness Coach is a work in progress. I stopped Parapet with a written reason. I share what I learned alongside the tools.
At a glance
- In product
- 9+ years, across B2B and B2C
- Product kinds
- Consumer mobile apps, products built on AI models, 0-to-1 builds and B2B SaaS
- Built since Nov '24
- SmartChef first, then LandMyCV, Sparktale, Parapet, Wellness Coach and the second brain
- Builds with
- AI coding tools, end to end
- Roles and teams
- On LinkedIn
What you can use
Tools you can adapt to your work
I share the files so other PMs can use them on their own work. Each tool page starts with what it fixes, then why I built it and how to copy it.
The workflow shows how I use AI across product work, with the principles behind my choices. The side projects show experiments and lessons. For help adapting a tool, message me on LinkedIn.
Product influencers I learn from
People whose work I follow. Each link goes to their own work; none has reviewed or endorsed this site.
Lenny Rachitsky
- Lenny's Newsletter (since 2019)
His newsletter is the first source my PM digest reads, twice a week.
Paweł Huryn
I studied pm-skills before I wrote my own skills. I keep his product metrics guide (North Star, AARRR, HEART) in my notes.
Claire Vo
- How I AI, her podcast on Lenny's network (since 2025)
How I AI shows people walking through their real AI workflows. I saved her 25-point framework for bringing an engineering team onto AI.
Also in my twice-weekly digest
John Cutler
The Beautiful Mess, on how product teams work. Co-author of The North Star Playbook (2019)
... and many more.
Offenlegung / Imprint
Offenlegung gemäß § 25 MedienG. Medieninhaber: Daniel Cohen, Wohnort: Wien. Diese Website stellt meine Person und meine Projekte dar (kleine Website im Sinne von § 25 Abs. 5 MedienG). Kontakt: linkedin.com/in/danielercohen
Media disclosure under § 25 MedienG: Daniel Cohen, Vienna. This site presents me and my projects. Contact: linkedin.com/in/danielercohen
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