a0.dev

We make mobile apps using AI.

2.6Score#482 of 999 agents#9 of 19 in App builder

Why it ranks #482

a0.dev, an AI app builder from YC W25, ranks #482 of 999 AI agents and #9 of 19 in App builder, with a score of 2.6 of 10. Data as of 3 Oct 2026.

The score adds four parts, each 0 to 10, by weight. Every point comes from public evidence. How scoring works ·

Proof 2 × 30% 0.6
Scale 2 × 30% 0.6
Momentum 2 × 25% 0.5
Autonomy 6 × 15% 0.9
= 2.6

Proof
Do customers use it? 30% of the score
2
Claims a customer count.
- +2
  A customer count
  “The response from our first launch has been incredible - 100k+ developers are shipping apps faster than ever with a0.”
  Launch YC post · 3 Jul 2025 · 2 claims
Not found: revenue or growth (+4), named customers (+3), a customer result (+2), work done at scale (+2)
Scale
Is there a real company behind it? 30% of the score
2
3 people.
- +2
  3 people on its YC page3 or 4 people
Not found: funding round in its news (+3)
Momentum
Is it shipping and growing now? 25% of the score
2
Shows hiring.
- +2
  Hiring: 2 open rolesFounding Growth Lead (Contract-to-Hire), Founding Brand and Content Lead (Contract-to-Hire)YC page
Not found: launch YC post in the last 6 months (+3), new traction claim in the last 6 months (+2), funding news in the last year (+2), a batch in the last year (it is YC Winter 2025) (+1)
Autonomy
How much of the job does it do on its own? 15% of the score
6
Supervised agent: takes actions in other systems; a person approves key steps.
- +6
  Level 2 of 4: Supervised agentTakes actions in other systems; a person approves key steps.
What the model read
- Acts in other systems: 72% likely
- Finishes whole tasks: 25% likely
- Calls itself an agent: 3% likely
Level 2: Takes actions in other systems; a person approves key steps.

About a0.dev

a0.dev is a platform that helps mobile developers build high quality apps in days instead of weeks by generating custom react native projects. We've launched top ranking apps that have been used by hundreds of thousands, and now we're creating the tools we wish we had to build faster.