Web Development
From customer-facing screens to servers and databases.
WithSoft, a one-person development studio
Complex work made simple.
What you need, built right.
From web and apps to business automation.
Built hands-on, from planning to launch.
Talk directly with the developer
From web to embedded
All source code handed over
What you can hand over
From tedious workflows to new services.
All your work in one place
Manage clients, orders and settlement in one system.
Automate repetitive work
Automate the lookups, data entry and data collection you do every day.
Turn ideas into services
Customer-facing web and apps, built together with the admin tools.
Equipment and PCs too
We build installed programs and equipment control software.
Real projects
The results speak for themselves.
- Client records migrated
- About 5,000
- Manual reports automated
- 24
- Departments unified in totals
- 36
Business Systems
Client Management System for an Education Consultancy
24 reports generated automatically
View caseBusiness Systems
Delivery Control System for Institutional Catering
Orders, delivery and settlement in one flow
View caseAutomation
Data Collection Automation for an Insurance Partner
Automated data collection with admin approval
View caseDesktop
Patient Safety Management Desktop App for a Hospital
Names of 36 departments unified
View caseSee other projects
Platform
Delivery Driver Matching Platform
Platform
Online Management Office for Multi-Unit Buildings
Platform
Local Experience Booking Marketplace
Embedded
MODBUS Communication Module for Industrial Equipment
Automation
Brokerage API Automated Trading and Market Data Tools
Desktop
Digital Signage for a Public Institution
Cases are anonymous to protect client confidentiality. Figures reflect each project's development and verification scope.
Coverage
From web to hardware.
The technologies you need, connected into one flow.
Mobile App Development
iOS and Android, including device features.
Desktop App Development
Offline work and large file processing.
Back Office · Admin Systems
Operations tools with permissions, statistics and reports.
Business Automation · RPA
Automating repetitive lookups, data entry and downloads.
Embedded · Firmware
Equipment control and real-time industrial communication.
Legacy Modernization · Data Migration
Moving existing data to a new system, verified.
App Store Launch · Operations
From store review to updates and incident response.
How it works
Clear criteria, results reviewed together.
- 01
Consultation
Current workflow and top-priority problems
- 02
Planning · Quote
Requirements spec · Acceptance criteria · Per-feature quote
- 03
Design
Screen layout · Data structure · Integrations
- 04
Development · Check-ins
Working versions reviewed every week
- 05
Launch · Maintenance
Final deliverables · Source code · Handover documents
After delivery
So the next round of development can continue.
Source code and repository
After the final payment, we hand over all source code and the repository.
Deployment and operations docs
We also deliver deployment settings and the documents needed to run it.
Acceptance and warranty
Acceptance criteria and defect repair terms are set in the contract.
Before you ask
Frequently asked questions
How is the cost determined?
Once the features and integrations are defined, we send a quote with the effort for each feature. If the scope changes, we agree on schedule and cost again.
How long does it take?
A first version usually takes 4–8 weeks, depending on size. Core features can be released first, in stages.
How does the contract work?
We sign after agreeing on requirements and acceptance criteria. Completion conditions and delivery scope are clearly written down.
Can I see progress during development?
Every week we share a working version you can try yourself, and we apply your feedback.
Who owns the source code?
After the final payment, you receive all source code, repository access and handover documents.
What about maintenance after launch?
We fix defects for the period and scope set in the contract. New features and ongoing operations are agreed separately.
Can you take over a project someone else left unfinished?
Yes. We review the code and data first, then explain with reasons whether to continue it or rebuild.
What should I prepare before a consultation?
Just tell us what is not working in your current workflow. If you have reference services or Excel templates, send them along.
Contact
What shall we build together?
No spec needed. Start by telling us what is not working.
Start with these three things.
- 01The workflow that bothers you
- 02Features you need and who uses them
- 03Preferred timeline and budget
Please do not include sensitive personal data or passwords.
Phone
Hours
Weekdays 09:00 – 18:00 (KST)
Consultation
Phone · Email · Online meeting