Make hard product decisions faster, and learn from every one.
Write down your first instinct. Lumo does the research, shows where your instinct and the evidence disagree, and drafts an update for each person or team who needs to know. Over time, you see where your instincts are right and where they're off.
How it works
Jordan Ellis is a sample product manager. This is Jordan's 41st decision in Lumo.
Ship the new booking flow on October 14, or hold three weeks for Brightline?
Brightline wants the multi-location view before they sign. They're talking about a three-year deal.
Multi-location is three weeks, minimum. Can't do it alongside the payments fix.
Payments fix. Double charges on rescheduled bookings. 40 customers affected.
New booking flow ships October 14.
Launch review with Maya, Friday 10am.
AI gave you more options. It didn't give you more judgment.
You get more drafts, more analysis, and more ideas than ever. You still have the same hours to decide what's right.
And the more you hand off, the less you practice the part that's still yours.
It shows up when you are about to do it again.
A record you have to go and read is a record you forget. This one interrupts the next decision.
Do we promise Northwind the API by March 14?
Ten times you have been this sure about a date.
Seven of them slipped.
Your rule: add Marco's worst case before you give a date.
Either way, Lumo records what you choose.
40 decisions in this record. Lumo read every one — that's how it spotted the date pattern. See the whole map
A pattern is only useful if it changes the next decision.
1 · The patternDates and deadlines are where your instinct is off.
Seven of the ten date decisions you were most sure about turned out worse than you expected.
2 · Why it happensYou are most confident right before a date slips.
Your confidence peaks when the schedule is already under pressure. That is when it is least reliable.
3 · The rule you setBefore you give a customer a date, add your engineering lead's worst case.
Saved. Lumo raises this the next time a date comes up.
4 · Since thenThree of your last four date decisions landed.
One still slipped. The record keeps counting either way.
Works right away. No IT approval needed.
There is nothing to install and no account to set up. Start with whatever you already have.
Why not ChatGPT, or a decision journal?
A chat will help with one decision, but it starts from nothing every time. It doesn't record your first instinct before you know the answer, and it doesn't know how your past decisions turned out. A decision journal keeps the history, but you do all the work. Lumo does the research on the decision in front of you and remembers how it turned out.
I'm a product leader and three-time founder. I kept watching product manager friends make a hard decision, then spend days explaining it to every team that needed to hear it. AI made the drafts faster. It didn't make the decisions better, and it never remembered how last quarter's decisions turned out. Lumo is my attempt at that part. It's a working prototype, built end to end.
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