HEAD about

One small studio,
one commit at a time.

OnCommit is a one-person app studio based in South Korea that builds apps people want to keep close. Planning, design, development and operations are all done in-house by the founder.

init the name

On (溫), warm. Commit, a promise.

"On" is the Korean word for warmth. For developers, a commit finalizes a change, and it is also, literally, a commitment. The more AI builds for us, the more we want to keep the promise of adding a little warmth to the day of the people who use our apps.

work what we do

Quiet help, right when it's needed.

Travel eSIMs, mobile invitations, a travel guide for visitors to Korea, housing lottery information, digital business cards and four-pillars astrology. Different fields, one rule: everyday services that help people get things done with less confusion.

rules how we work

Four things we keep

People firstWe look at what users go through before choosing any technology.

One thing at a timeBuild small, verify, and commit honestly.

Only what's neededNo sign-up where possible, and data is deleted once it has served its purpose.

Test what can't be wrongAnything that must be exact, like calendar math, is pinned down by tests.

log what we've shipped

Products

Jalga eSIM LiveTravel eSIM, auto-provisioned

Mosim LiveMobile invitations

Korea Ready LiveTravel guide for visitors to Korea

청

ApplyTalk LiveHousing lottery info · AI advice

QR

CardNex LiveDigital business card exchange

봄

Tagonabom Coming soonAndroid · iOS

사주

Saju In developmentFour-pillars calculator

info company

OnCommit (온커밋)

Founder: Seunghwan Cheon (천승환)
Founded: October 1, 2026
Type: Independent app studio
Location: South Korea
Website: oncommit.co.kr
Email: [email protected]

Questions, partnership proposals and bug reports are all welcome. Every email is read and answered by the founder.