Photosynthesis
Light + water + CO₂ make sugar and oxygen.
The oxygen comes from the CO₂.
Does it? Then where does the water’s oxygen go?
What if your notes talked back?
Riddled is a writing space where AI doesn't wait to be asked. It thinks alongside you.
Start writingFree to start.
Anything you write.
Lecture notes, a journal, meeting notes, the essay you’re stuck on, a grocery list. Riddled works out what each page is for and asks accordingly. Sometimes that means nothing at all.
Sunday
Couldn’t sleep again. The new place is fine. It’s probably the coffee.
Same week as the move. Why the coffee?
Thursday sync
- Launch moves to the 14th
- Everyone agreed on the new pricing
Agreed, or just didn’t object?
Groceries
- Eggs
- Oat milk
- Coffee filters
- A card for Sam
On remote work
Offices only exist because managers don’t trust people to work alone.
Only? What else did the office give you?
Launch budget
- Ads $400
- Video $250
- Mic $90
- Domain $12
- Ads$400
- Video$250
- Mic$90
Just write. It reads along.
No prompting. No copying and pasting into a chatbot.
Riddled is like a diary that writes back. It follows your thinking, notices the things worth questioning, and quietly leaves a thought beside yours.
Most of the time, it says nothing. And that’s the point.
Rather say it? Hold ⌥ and talk.
Follow the thought.
A question catches your attention? Open it.
Ask why. Push back. Explore the idea until it makes sense.
Every conversation stays attached to the thought that started it. Close it whenever you’re ready, and keep writing.
Users never read the onboarding emails, so we can drop them.
Your notebook. Your voice.
Plain, warm, blunt, or a little mischievous.
Same thoughtful questions. Different ways of asking them.
Seeing any visited node means we've found a cycle.
Does that hold if the node was visited in a branch that already finished?
Bring in the expert.
Make a Riddler that thinks like the best reviewer you know: a staff engineer, a sharp editor, a skeptical investor, your old professor.
Keep it for yourself, or share it with your team. Give a note the right Riddler, and it gets the questions they’d ask.
We'll cache every user's feed in Redis so the home page loads instantly.
What happens to the cache when someone with 50,000 followers posts?
Call it into the conversation.
In a shared note, type @riddled in any discussion. It reads the note and the thread, then asks what the room hasn’t.
Coming with Teams
We'll move every customer to the new billing system over one weekend.
MayaFeels tight for one weekend.
Leo
It won’t think for you.
It won’t rewrite your notes. It won’t hand you every answer. And it won’t interrupt every passing thought.
The page is yours. Riddled just asks the questions you might have missed.
See where your thoughts take you.
Start writingFree to start.