Sticky notes on an infinite canvas is a genuinely approachable weekend build. A canvas that stays smooth and perfectly in sync while ten people drag things around at once is Figma's problem wearing a different color scheme.
VIBE SCORE 68/100
The parts this build actually needs, each rated on its own — the average is the Vibe Score above.
| Landing page | 99 |
| Realtime collaboration | 67 |
| User login | 92 |
| Custom canvas/rendering engine | 15 |
Two real costs, not just "free": the AI agent's own usage, and hosting once it's running. Both are estimated from this app's own effort rating and component list — see the assumptions on the method page.
| AI agent — with a subscription (Claude Pro/Max, Cursor, etc.) | $0 marginal |
| AI agent — pay-per-use API, no subscription | $43–$86 one-time |
| Hosting, once it's running | $5–$10/mo |
| Domain name, if you want your own | ~$12/yr |
Miro costs $10/mo, but hosting alone could run $5–$10/mo — that can eat the whole subscription saving before the agent cost even comes into it.
Don't feel like building it? These are already made, open-source, and free.
Borderline. Sticky notes on an infinite canvas is a genuinely approachable weekend build. A canvas that stays smooth and perfectly in sync while ten people drag things around at once is Figma's problem wearing a different color scheme.
Miro costs $10/mo (about $120/yr) as of 2026-08. That's what a working rebuild would save you.
Real-time multi-cursor collaboration at a smooth frame rate is the same class of hard problem as Figma's — not a lighter version of it Their template library (retros, roadmaps, story maps) is a content investment, not a technical one, but it's most of the perceived value for many teams Video huddles and presentation mode layer real-time video on top of an already-hard realtime canvas
Yes — Excalidraw, tldraw are open-source options worth trying before you build your own. Details are in the standard parts section on this page.
Curated sets Miro appears in.
Closest matches on the register — ranked by the build parts they share with Miro, not just by category.
Browse all design tools · every comparison · how scoring works · the full register
An occasional email when new apps get reviewed — the verdict, the effort, and what changed. No tracking pixels, no drip sequence, one click to leave.