Application software development
Internal business systems your team uses every day, and customer-facing web services. Often the work starts by moving a spreadsheet-and-paper process onto a screen.
Let's get started!
From an ideato software that runs.
Addsoft is a software development partner that handles planning, development and operation in one place — from internal business systems to mobile apps and games.
- Founded
- 2020
- Core practice areas
- 4
- Primary stack
- .NET · Unity
- End-to-end delivery
- Plan → Operate
About
We start small and see it through
Addsoft is a software company founded in 2020 in Icheon, Korea. Requirements, design, development, deployment and operation all stay in the same hands, so nothing gets lost in translation. We are small on purpose — and we finish what we take on.
Services
What we can build
Internal business systems, customer-facing web services, mobile apps and games, and commerce. Hand us the whole thing or just the part you need.
Mobile app & game development
Mobile games in Unity and apps built on web technology — including store submission and post-launch updates.
E-commerce & commerce platforms
Not just listing products and taking orders — making the order, settlement and delivery flow actually fit together.
Technical consulting & maintenance
We also take on systems that are already running — reading code nobody handed over, and getting it back to a state you can change safely.
Works
Things we have built
Client business systems alongside our own services and games, planned and operated in-house.
Client project2025
After-service management system
A B2B system where headquarters, distributors and service centers handle after-service intake, assignment, processing and settlement in one place — with a different view and different editable fields per role.
Stack
- ASP.NET Core MVC
- EF Core
- MySQL
- log4net
- Docker
Own product2025
RecipeDrawer
A web service that collects recipes, plans a month of meals and turns the plan into a shopping list. Planned, built and operated in-house.
Stack
- .NET 9
- ASP.NET Core MVC
- MySQL
- Tailwind CSS
- Alpine.js
Own product2025
Sucker Mart
An idle shop-management simulation set at a dungeon entrance, where adventurers are the customers. A non-combat title released on Android.
Stack
- Unity 6
- C#
- 2D URP
- Android
Have something you want built?
A rough idea is enough to begin with. We can work out the shape of it together.