09 · Services
Notion / HubSpot / Zendesk almost fits, but the gap is costing your team hours every day. Off-the-shelf can't do it. A throwaway prototype isn't safe enough to ship.
Custom Apps
When Notion / HubSpot / Zendesk almost fits — we build the version that does.
Who this is for — For ops/product/CTO teams who need a real internal tool, dashboard, or customer-facing AI feature — built to last, not to demo.
Output
Code is yours
Diagnose
2-week scope
Thin slice
End-to-end in 4w
Harden
Auth · evals · obs
Hand off
Or run for you
What you get
What we actually ship.
- Internal AI copilots for sales, support and ops — embedded in the tools your team uses
- Custom dashboards on top of your data warehouse — finally, the numbers your CFO trusts
- Customer-facing AI features built into your product — not a chatbot you rent
- Extensions on existing tools (HubSpot, Zendesk, Notion, Slack) so the gap closes properly
- Production-grade Next.js / Python / TypeScript — code is yours, no vendor lock
How it works
Build the thing — properly.
When the off-the-shelf tool doesn't fit, we build the version that does. Real production-grade software — internal copilots, customer-facing AI features, dashboards on top of your data — not throwaway prototypes.
- 01
01Step
Plan it out
A two-week diagnostic. We walk the workflow with you, sketch the system on paper, name where it can break. You leave with a written plan and a price you can hold us to.
0202Step
Build the first working version
A real end-to-end version in 4 weeks — with your data, your users, your feedback. We ship the smallest useful thing first because it beats six months of perfect planning.
0303Step
Connect it to the rest
Login, security, monitoring, deploys. Wired into your CRM, your spreadsheets, whatever you already use. The code lives in a repo that belongs to you.
0404Step
Run it or hand it over
We can keep running it for you, or train your team to take over. Most clients keep us on a part-time retainer for the first 6 months, then bring it in-house once the team's confident.
Featured outcome
“It’s a system now. Not a one-off win.”
— CEO, sundata.io
Diagnose
2-week scope
Thin slice
End-to-end in 4w
Harden
Auth · evals · obs
Hand off
Or run for you
How this compares
The cost of the old way — same gap, three tools.
When the off-the-shelf tool almost fits, here's what each path costs you.
How long to a working version
Status quo
4–8 weeks of tinkering. Breaks at scale.
Generic agency
3–6 months. Decks first, code later.
With Mediseo
Working thin slice in 4 weeks. Real users, real data.
Production-readiness
Status quo
Bubble / Retool — fine until it isn't.
Generic agency
Production-ish. Auth/observability bolted on.
With Mediseo
Next.js / Python / TypeScript. Auth, evals, observability built in.
Code ownership
Status quo
Locked into the platform. Migration = rebuild.
Generic agency
Often theirs. They charge to hand it over.
With Mediseo
Yours, in your repo, docs included.
Cost over 2 years
Status quo
€10–20K platform + maintenance pain.
Generic agency
€60–150K + ongoing retainer.
With Mediseo
From €12K build + optional €200/mo for tuning.
Frequently asked questions
What people ask about custom apps.
Low-code is great for prototypes; it breaks at scale, can't own your data security story, and locks you in. We use it for diagnostics and ship production code (Next.js / Python / TypeScript) for anything that needs to last.
Further reading
Twenty minutes, your AI potential mapped — for free.
We look at your business, name the workflows AI can take off your plate, and put a price on each. You leave with a one-page map — no deck, no roadshow.