DAIVIN! YC Application

Winter 2026Active

DAIVIN! went through Y Combinator in the Winter 2026 batch as a Industrials company. Below: what the company does, who founded it, and its application to YC, reconstructed question by question in the real YC form.

YC batch: Winter 2026
Industry: IndustrialsDefense
Team size: 1
Status: Active
Launched: 2026

Founders

Leo KankkunenFounder & CEO

What DAIVIN! does

DAIVIN! builds tankless dive gear that unlocks breath autonomy in extreme environments. Starting from underwater environment our mission is to remove the need for dangerous, heavy and bulky oxygen tanks in space, air and on land and replace them with water!

DAIVIN!'s YC application, reconstructed

Y Combinator application

DAIVIN!, Winter 2026 batch. The real form questions, answered from public data.

Founders2
Company7
Progress7
Idea4
Equity3
Curious2
Batch Preference1

Company

Company name

DAIVIN!

Describe what your company does in 50 characters or less.

Tankless Dive Gear - Breath Autonomy

What is your company going to make? Please describe your product and what it does or will do.

We are building tankless dive gear that eliminates the need for bulky oxygen tanks underwater. Our product lets divers breathe autonomously by extracting oxygen from water, and we aim to extend this tech to space, air, and land environments.

Where do you live now, and where would the company be based after YC?

We live in San Francisco, CA, and the company will remain based here after YC.

Explain your decision regarding location.

San Francisco is where we have access to the right technology, partners, and a community interested in industrial and defense applications, so it makes sense to stay here.

21 more answers in the full application

Founders, Progress, Idea, Equity, Curious, Batch Preference are in the full version. Create a free account to open it in YC Insights, next to every other YC batch.

See full application

Frequently Asked Questions

Is this the real DAIVIN! YC application?

No. Y Combinator keeps submitted applications private. This is a reconstruction: the real YC form questions, answered from DAIVIN!'s public data (launch notes, founder backgrounds, product description). It shows how a company like DAIVIN! would present itself to YC, not the text they submitted.