
Old systems renewed, data kept safe.
Move work out of Excel or legacy apps into a fast, maintainable system, without losing data or stopping operations.
If this sounds familiar.
The three complaints we hear most before a project starts, and how we fix them.
Layers of Excel files, one wrong formula away from trouble.
Data moves into one central system that checks its own inputs.
An old app is slow, and nobody dares to touch it.
We study the code and renew it in stages, using AI to read the old code and developers to test every change.
Worried about losing data when switching systems.
Migrations are rehearsed on a copy of your data, and the old system keeps running until the new one is ready.
A good fit for
- Businesses whose operations still run on Excel
- Companies with legacy apps that are slow or hard to change
- Teams whose original developer is long gone
What we can build.
What projects like this usually include, shaped around your needs rather than a fixed package.
Legacy system audit
Maps the features, data, and problems of the system you run today.
Data migration
Moves data out of Excel, old databases, or other apps safely.
Code overhaul
Updates outdated code so it's faster, safer, and easier to maintain.
Staged rollout
The new system goes live in stages, so operations keep running.
Move to the cloud
Moves apps off old servers onto more reliable infrastructure.
Team training
Your team is guided until they're comfortable with the new system.
Things we can build for you.
The kinds of projects we build most often for this service.
Excel to web app
Legacy database migration
Old PHP app updates
Moving servers to the cloud
Fixing slow apps
Merging several apps into one
Digitizing paper forms
Refreshing old app interfaces
Upgrading to the latest framework
Data cleanup & consolidation
Connecting old systems to new apps
Taking over projects from other developers
What you need isn't on the list?
Tell us about it first. If it can be built, we'll help you find the way.
Tell us what's brokenWhat you get.
All of it in writing, handed over when the project is done.
Handover
Legacy Modernization
- An audit of your current system and data
- A staged migration plan
- A new system with your data already moved
- Team training and documentation
- The code and data are fully yours
Xenverr
You
Pay once. Own it for good.
You pay once to have it built. The code and data are yours, so the software is a business asset, not a monthly rent. The final figure follows your project scope.
To start
From
Rp7.5million
Timeline from 3 weeks
Moving off Excel or one legacy app
To grow
From
Rp27.5million
Timeline from 8 weeks
A large system renewed in stages
1 month of free maintenance after launch
The final price is in the proposal before any work starts. After the free month, ongoing maintenance is optional. We can handle hosting and domain for you, or you can manage them yourself. No hidden costs.
Technology we work with
- Next.js
- React
- Laravel
- Node.js
- Python
- PostgreSQL
- MySQL
- Supabase
- Docker
- AWS
- Google Cloud
- Claude API
Questions we often get.
Short answers to what usually comes up before a project starts.
Do operations have to stop during migration?
No. The old system keeps running until the new one is tested, then the switch happens at an agreed time.
What if our old data is messy?
We check and clean it first. Anything doubtful is flagged for your team to confirm.
Can you take over an app built by another developer?
Yes. We study the code first, then share a condition report and recommendations before continuing.
Got another question?
Ask on WhatsAppOne team for all of it.
Websites, apps, and automation are built by the same team, so everything connects without juggling multiple vendors.
It starts with one conversation.
Tell us about the problem or the idea. We reply with clear next steps, before any commitment.

