Lorenzo’s Ledger

How products get made now.

LatestFounder notesOct 17, 20265 min

This time, the update is what I removed

I took whole mechanisms out of an app people already use. Pride was never what held me back. The rewiring was, and for a while I mistook that fear for a reason.

Oct 8, 2026Why my Claude Code rules never stuckA rule in a file asks the agent to behave. Put rules where every project reads them, phrase them as behavior someone can observe, and add a check at a moment the agent always passes through.Building with AI7 min Oct 8, 2026Duolingo’s onboarding: every answer is a promiseEach onboarding question promises that the answer will change what the learner sees next. In one recording of Duolingo’s flow, the owl answers most choices, and the loading screen quotes a goal the learner never picked.Teardowns7 min Oct 8, 2026Compare on facts that stay trueA reader acts on your comparison page as if you checked it this morning.From the day you write it to the day it is readFounder notes6 min

Aftershock

One topic, one opinion, filed the day it matters. Each one makes a call, and comes back to say if it held.

Oct 9, 2026 8 days after Claude Code modsMods run as you. Read what they call first.Open Oct 8, 2026 1 day after Haiku 5.5Haiku 5.5 reads. A bigger model decides.Open Sep 26, 2026 4 days after Opus 5.5Rent the model, own the routingOpen

Lorenzo Alejandro Montes

I make consumer apps and take them from the first interview to the store listing. Crew and Farro are live on iOS and Android.

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Lorenzo Alejandro Montes Milan, Italy RSS feed

04 / Ledger SCRL 0.00 Milan --:--