CUSTOM SOFTWARE · FIXED PRICE
Custom apps, AI-powered automations, MVPs, and in-house tools. Fixed price. Available in weeks.
CUSTOM SOFTWARE
01
Complete software built for your specific workflow. From resource planning to billing systems, we build applications that do exactly what your business needs.
02
Intelligent integrations that connect your existing tools and automate manual processes. From document classification to report generation, AI works for you.
03
From idea to production in weeks. We build minimum viable products that allow you to validate your concept with real users, quickly.
04
Dashboards, management tools, and internal systems that replace spreadsheets and manual processes. Built for the team that uses them every day.
05
Cloud infrastructure architecture, deployment, and management. From migration to AWS/Azure/GCP to cost optimization and cloud operations.
06
Technical and strategic consulting for software projects. From architecture assessment to roadmap planning and code audits.
07
Experienced developers who integrate seamlessly into your team. Temporary or permanent support with professionals we know and have worked with.
HOW WE WORK
01
We audit a workflow and prototype the solution. You receive a fixed price before we build anything.
02
Scope in writing, price locked in. Scope changes are new quotes — never surprise invoices.
03
Your tool is in production in 4–8 weeks, not quarters. You see the progress every week.
04
We keep it running, secure, and up-to-date. Minor changes included. You run the business.
PACKAGES
Transparency is key. It all starts with a diagnosis.
1.900 €
CLOSED
2 WEEKS
Audit of a workflow, navigable prototype, and fixed budget for construction. If you proceed, the cost of the diagnostic will be deducted from the construction cost.
€6,900–14,900
CLOSED
4–8 WEEKS
An internal tool (a workflow, after the Diagnosis): budgeting, tracking, planning, or reporting, deployed and in use. Includes a 3-month license. Applications, MVPs, and staffing are finalized in writing, not included in this agreement.
from €390
/MES
CONTINUOUS
Hosting, security updates, regulatory and API changes, minor change hours, and business hours support.
PROJECTS
Nummo is a B2B product with its own brand, currently without a public website.
Glowapp is a cycling app for organizations.
WHO ANSWERS
Wallion is run by its founder: the person who defines the project is responsible for its success. No account managers, no transfers, no ghost teams.
Oscar has 14 years of experience building with React, Node.js, TypeScript, and AWS. In recent years, he has led the technical development of TitanOS, the Linux operating system for Philips' 2026 televisions (18 million users in Europe), and an AI assistant for Opella/Sanofi serving 11,000 employees. He is based in Barcelona.
Do you already know what you need? Fill out this form and you will receive a fixed-price quote in writing within 48 business hours, or a recommendation to start with a diagnostic assessment for €1,900.
Tell us what's wrong. We'll tell you if custom software can fix it — and exactly how much it would cost.
