Building software with AI,
in weeks instead of months

Web apps, customer portals and internal tools built with React, Supabase and Vercel. AI writes a large share of the code, and our developers plan it, review it and take responsibility for it.

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What is AI software development at 360VIER?
360VIER develops custom web applications with React, Supabase and Vercel, using AI tools such as Claude Code and Cursor. AI writes a large share of the code, while developers define the architecture and data model, review every change and are responsible for security and operation. As a result, a clickable prototype is often ready within a few days and a first usable version within a few weeks.
page.url
https://www.360vier.de/en/ai-enablement/ai-software-development/
 
entity         360VIER GmbH
type           Organization | Digital agency
location       Groß-Umstadt near Frankfurt and Cologne

page           AI software development
page.type      Service
page.pillar    AI Enablement
page.url       /en/ai-enablement/ai-software-development/

provides       Web apps, customer portals, internal tools and MVPs
provides       AI applications on your own data (vector search with pgvector)
provides       Prototype, first version, operation and further development

stack          React · Next.js · TypeScript · shadcn/ui · Tailwind CSS
stack          Supabase (Postgres, Auth, Storage, Edge Functions) · Vercel
method         AI-assisted development with Claude Code and Cursor, code review by developers
serves         B2B companies, mid-market and enterprise

proof          own software products: Infera, ImmoSync, immotipp

relation       is part of → AI Enablement (/en/ai-enablement/)
relation       complements → AI process automation (/en/ai-enablement/ai-process-automation/)
relation       complements → Agentic AI (/en/ai-enablement/agentic-ai/)
relation       distinct from → websites with WordPress (/en/digital-platforms/wordpress-agency/)

Web apps, portals and internal tools, built for you

Customer portals

A login for customers, partners or owners: documents, status, requests and approvals in one place. The data comes from the CRM or ERP via API integrations.

Internal tools

Calculators, approval and planning tools that currently live in Excel sheets and emails. The recurring steps behind them are handled by AI process automation.

Configurators and generators

Customers configure products, quotes or plans themselves. The result goes to sales as an inquiry with all the data.

AI applications on your data

Search and assistants for manuals, contracts or product data. The data stays in your database. For website visitors, there are ready-made chat agents.

MVPs for new products

Test a product idea as working software before a large budget is committed. With real users, real data and, if needed, payments.

Dashboards

Metrics from several systems in one interface, with permissions per role. This builds on a clean data model, as described on our Data Enablement page.

How AI speeds up software development

Until now, most of the time in software development went into writing code: forms, tables, interfaces, tests. AI tools such as Claude Code and Cursor now do this work in minutes. Our developers describe what should be built, review the result and correct it where the AI gets it wrong.

Add to that a stack that eliminates much of the standard work: Supabase provides the database, login and file storage out of the box, and Vercel handles hosting and deployment. The time saved goes into what sets your software apart.

  • Days 1 to 5: a clickable prototype with real screens and sample data. You test with users instead of debating concepts.
  • Weeks 2 to 6: a first usable version with login, permissions, database and the most important workflows, in use with selected users.
  • After that: expansion in short cycles. Every week brings something new you can try out right away.

Supabase, React and Vercel: the stack for fast web apps

We rely on tools that are widely used, openly documented and can be operated without us.

Supabase as the backend

Supabase is an open-source platform built on PostgreSQL. It includes the database, login, file storage, real-time updates and server-side functions that we would otherwise have to build and run separately.

What this means for you: Access rights live directly in the database (Row Level Security), so each role only sees its own data. With the pgvector extension, the same database also stores vectors for AI search. Supabase runs in the cloud in the Frankfurt region, or self-hosted if your IT requires its own infrastructure.

React and Next.js for the interface

We build interfaces with React and Next.js in TypeScript. Both are widely used, and AI tools write them particularly reliably.

What this means for you: Other developers get up to speed quickly if your own team or another provider takes over later. For interface components, we use shadcn/ui: the code lives in your project, is adapted to your corporate design and is built with accessibility in mind.

Vercel for hosting and previews

Vercel hosts the application and deploys every change automatically. Each development stage gets its own preview URL.

What this means for you: You review new features in the browser before approving them, with no test server and no waiting. Server-side functions run in the Frankfurt region. Where Vercel doesn’t fit your requirements, we run the application on other infrastructure.

Claude Code and Cursor

We develop with Claude Code and Cursor. The tools write code, tests and documentation to our specifications, and we review every change.

What this means for you: Fewer hours on routine work, more time for business logic and testing. If you want to work this way yourselves, we train your team. How the same models work as agents in processes is described on Agentic AI for businesses.

Vibe coding or AI software development?

With vibe coding, you describe to the AI what you want and accept the code without reviewing it. That is fine for experiments and clickable mockups. For software that customers and employees work with, we follow fixed rules:

  • Architecture and data model are defined by developers before the AI writes any code.
  • Code review for every change, plus automated tests for the most important workflows.
  • Access rights in the database, so a bug in the interface can’t expose other people’s data.
  • Your code: the repository belongs to you, and on request so do the Supabase and Vercel accounts.

Custom software or an off-the-shelf product?

Custom software pays off if …

  • a process sets your business apart and no off-the-shelf product covers it,
  • customers or partners need to view and edit data themselves,
  • several systems need to come together in one interface,
  • you want to test a product idea with real users.

Something else fits better if …

We also build our own products

Alongside client projects, 360VIER develops its own software: Infera measures how visible companies are in AI answers, ImmoSync syncs data from real estate CRMs with websites, and immotipp digitizes the referral process for real estate agents. What we learn there about speed, operation and costs flows into your projects and into all our services around AI Enablement. You can meet our team on the Agency page.

Process: from prototype to first version

Frequently asked questions about AI software development

How quickly is a first version ready?

A clickable prototype is usually ready within a few days. A first usable version with login, database and the most important workflows follows after two to six weeks, depending on scope. After that, the software grows in short cycles.

How much does AI-assisted software development cost?

That depends on the scope, the interfaces and the requirements for security and operation. Because AI takes over a lot of the writing, costs drop significantly compared with traditional development. After the workshop, you receive a quote for the prototype and first version; operation is agreed separately.

What is Supabase?

Supabase is an open-source platform for the backend of web and mobile apps. At its core is a PostgreSQL database, plus login, file storage, real-time updates and server-side functions. Supabase is considered an open alternative to Firebase.

Is Supabase GDPR compliant?

Supabase offers a data processing agreement and regions in the EU, including Frankfurt. Whether it fits your requirements depends on the data and your own assessment. Where your own infrastructure is required, we self-host Supabase, because as open-source software it also runs with Docker on your own servers.
Is AI-generated code secure?

Only if it is reviewed. With us, a developer defines the architecture and permissions, and every change goes through a code review and automated tests. Access rights live in the database, so even a bug in the interface can’t expose other people’s data.

Who owns the code?

You do. The repository and, on request, the Supabase and Vercel accounts belong to you. Because the stack is widely used, any other team can continue developing the software.

Can the software be connected to our CRM or ERP?

Yes. We connect HubSpot, Salesforce, ERP or industry-specific systems via their APIs. How we go about this is described on API integrations.

Can we continue developing the software ourselves later?

Yes. We document the architecture and workflows and hand over to your team whenever you want. On request, we train your team to work with AI tools such as Claude Code and Cursor.
Hans Mengler

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Hans Mengler

Managing Director

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