Manjijak Studio

Manjijak Studio is a software studio in Incheon, South Korea that turns experience from the field into apps, websites and operations systems.

What we do

We make our own product, DoWellLog. We also build apps, websites and work systems for other organizations. The work runs from product planning and UX design to app and web development, workflow analysis and record structure design.

DoWellLog

DoWellLog is an iPhone and Android app for small food businesses in Korea, such as restaurants, cafes, pubs and delivery-only kitchens. Owners and staff use the same app. It starts from work schedules and clock-in and clock-out records and carries them through to pay and weekly holiday allowance calculations, pay slips, employment contracts, and preparation documents for withholding tax and the four social insurance programs. It does not replace tax accountants or certified labor attorneys. Filing and professional judgment are done together with licensed experts.

Pricing: Free for up to 3 registered employees. From the 4th employee, 12,000 KRW per store per month, VAT included.

Where to get DoWellLog

DoWellLog is available on the Korean App Store and on Google Play. The app is in Korean.

Songdo Canalwalk

We took part in building and operating the app and website for the Songdo Canalwalk merchants' association, working through the prime contractor. The app lets visitors find shops in the district by category and area and see local events and offers. The app launched on Google Play and the App Store in August 2026.

How we build with Claude

Between 9 September and 9 October 2026, about three out of four commits in our main product repository carried a Claude co-author credit. The same repository defines nine Claude Code agents for company functions such as development, marketing, sales and accounting.

Company facts

Name:: Manjijak Studio
English name on business registration certificate:: MANJIJAK STUDIO
Korean name:: 만지작스튜디오
Legal form:: Sole proprietorship
Business opened:: 25 June 2026
Business registration number:: 338-75-00539
Location:: Incheon, South Korea
DoWellLog on the App Store:: https://apps.apple.com/kr/app/id6788130453
DoWellLog on Google Play:: https://play.google.com/store/apps/details?id=com.manjijak.app