미술 (art) + code · Product studio, Seoul

Software, made the way paintings are made.

MisulCode is the independent studio behind HoverNotes, JonjaBird and Quest. We sketch, paint over and redo until the product is right.

See the work Company details
312 try again
Fig. 1 — underdrawing, then paint

Works

3 products, in use today
No. 01

HoverNotes

AI notes from any online lecture or tutorial, saved to your own Obsidian vault.

Medium
Browser extension, web app, AI
In use
30,000 Chrome users · rated 4.6
Role
Designed and engineered by MisulCode for HoverNotes LLC (US)
hovernotes.io
No. 02

JonjaBird

A mailroom run by AI agents that keeps foreign inmates in Korea and their families abroad in touch by letter.

Medium
Web portal, AI agent, postal mail
In use
Over 100 letters handled in its first year
Role
Founded, built and operated by MisulCode
jonjabird.com
No. 03

Quest

Trip planning and quoting software for tour operators in Uganda and East Africa.

Medium
Web platform, branded trip documents
Team
Kampala and Seoul
Role
Co-founded; technology led from Seoul
questbooking.ai

How a product gets made

Method
  1. 01

    Sketch

    Rough ideas, fast to draw and cheap to throw away.

  2. 02

    Block in

    A first working version, in front of real users.

  3. 03

    Paint over

    Keep what works. Redo what doesn’t.

  4. 04

    Finish

    Ship it, run it, and take the lessons to the next one.

“What hackers and painters have in common is that they’re both makers.”
Paul Graham, Hackers and Painters
Studio

A registered Korean business, based in Seoul.

Hamza Kyamanywa
Hamza Kyamanywa Founder. Technical founder and full-stack AI engineer. untilhamza.com
Business name · 상호
미술코드 (MisulCode)
Representative · 대표
Kyamanywa Hamza
Opened · 개업
29 May 2026
Business type · 업종
Information and communications · computer programming services
Address · 소재지
4F, 13 Saimdang-ro 8-gil, Seocho-gu, Seoul
Reg. no. · 사업자등록번호
771-06-03343
Contact
hello@misulcode.com