What is the difference between a web app and a website?

A website mainly presents content; a web app is software where users log in, enter data and get things done: dashboards, portals, calculators, booking systems.

Does it make sense to start with an MVP?

In most cases, yes. A small first version that solves the most critical workflow lets real user feedback guide the next steps.

Do you also build mobile apps?

Our focus is web apps; we build responsive web apps that work well on mobile and, where needed, progressive web apps. When a native mobile app is required, we say so clearly.

Clutch 5.0· 8 reviews
Meta Business Partner

Web app development

We build web apps that your customers, partners or team will use every day.

Get a proposal Tell us about your project

proposal-panelmain · live

// leads/route.tsexport async function POST(req) {  const lead = await req.json()  await crm.create(lead)  await notify('sales', lead)  return ok({ id: lead.id })} // panels/Proposals.tsxexport function Proposals() {  const rows = useQuery('proposals')  return <Table rows={rows} />}

Overview
Proposals
Clients
Reports
Settings

Open proposals24

Won this month9

Avg. reply2 h

Logistics · multilingual portalNewnow

Education · application systemProposal2 h

SaaS · API integrationBuildingyesterday

Manufacturing · dealer panelLive3 days

Last updated 21 October 2026

View as Markdown

Next.js
API
AI

From idea to live

A working release every sprint. You see what shipped, and when.

01
Discovery
The workflow, the users and the success measure on one page.
- Scope
- Measure
- Use case
- Success measure
- System map
- Data flow
02
Design
Screens and the data model, a clickable prototype.
- Prototype
- Data model
- Model → tool → answer
- Data sources
- API contract
- Failure cases
03
Build
Two-week sprints, a working release in each.
- Sprints 1–4
- Preview
- Sprints 1–3
- Preview
- Sprints 1–3
- Sandbox
04
Test
Automated tests, acceptance on real data.
- Acceptance
- Performance
- Evaluation set
- Human review
- End to end
- Load test
05
Launch
Go-live, monitoring and maintenance.
- Live
- Monitoring
- Live
- Cost monitoring
- Live
- Monitoring and alerts

v1.4 · Sprint 4 · proposal panel, notifications ✓ tests passed
v1.3 · Sprint 3 · CRM connection ✓ live
v1.2 · Sprint 2 · role-based access ✓ live

Sample flow · every project has its own release log

In short

What is Web app development? The answer in one paragraph.

Roicool's web app development service covers user and workflow analysis, the scope of the first version (MVP), interface design, authentication and authorization, the data model, CRM and other system integrations, testing, launch and maintenance.

Last updated: 21 October 2026View as Markdown

Your customers email you to ask about the status of a quote, order or project.

Three problems we solve.

Your customers email you to ask about the status of a quote, order or project.
Your team runs a critical process on spreadsheets.
You want to add a section to your site that needs user accounts.

Scope

What we do

01
Analysis and scope
User roles, workflows and the limits of the first version.
Deliverable · Scope and architecture
02
Design
A usable, accessible interface; prototype and user testing.
Deliverable · The launched app
03
Development
Authentication, authorization, data model, business logic.
Deliverable · Source code and
04
Integration
CRM, ERP and other systems; for details, see API integration.

01Analysis and scope

Analysis and scope

User roles, workflows and the limits of the first version.

Deliverable · Scope and architecture

02Design

Design

A usable, accessible interface; prototype and user testing.

Deliverable · The launched app

03Development

Development

Authentication, authorization, data model, business logic.

Deliverable · Source code and

04Integration

Integration

CRM, ERP and other systems; for details, see API integration.

Price: by scope, written in the proposalAsk for a proposal

Cases

Results, with their method. One case from this service.

All case studies

SESTEK
SaaS

SESTEK: how we connected Webflow forms to Dynamics 365

We connected SESTEK's Webflow forms not straight to the CRM but to a Webflow Cloud app on the site's domain; only this server layer talks to Microsoft Dynamics 365, and the browser never does. The forms are React code components managed from the Designer, on a bilingual CMS whose folder and item slugs are largely translated.

Read the SESTEK case

In the same area

In the same area. Services that work side by side.

This service is part of Custom software development

Team and proof

The team that does the work, the result we measured. Our rating and our badges can be checked.

Clutch reviews Clutch

5.0★★★★★8 verified reviews

“Roicool knew what they were doing and were ready to answer our questions with their expertise anytime.”
Sena Miskioğlu, SESTEK Marketing Manager · 20 October 2026

Clutch profile

Case result

delivery channels at SESTEK: a CDN library, code components and a Cloud app

Team

Strategy, content, development and measurement in one team.

projects: 13
cases: 9

Ali ParsaProfile Senior Developer · Owner of this service

Partnerships and certifications

Frequently asked questions

What is the difference between a web app and a website?
A website mainly presents content; a web app is software where users log in, enter data and get things done: dashboards, portals, calculators, booking systems.
Copy link
Does it make sense to start with an MVP?
In most cases, yes. A small first version that solves the most critical workflow lets real user feedback guide the next steps.
Copy link
Do you also build mobile apps?
Our focus is web apps; we build responsive web apps that work well on mobile and, where needed, progressive web apps. When a native mobile app is required, we say so clearly.
Copy link