March Code
Service

Web App Development

Customer portals, B2B portals and dashboards built around your processes, from $4,900. Integration with your ERP and CRM. The first working version in a month

Demo in 3–5 daysfree, before any contract
from $4,900transparent quote
13+ yearsof founder experience · US, Europe, CIS

Free consultation · 30 minutes · No obligation

Cost
from $4,900
First step
A prototype of the key screens in 5 days, free
First paid stage
Customer portal: from $4,900, 3–4 weeks
  • Quote in 24 hours
  • Pay by stage
  • Your code from day one
  • Weekly demos
  • 3-month warranty
  • Contract and invoices

Telegram @marchcode · info@march-code.tech · Mon–Fri 9:00–18:00 Central European time, and on Telegram we reply outside these hours too

When it matters

Situations where we help

If you recognize even one, we can be useful

01

Managers spend 3 hours a day answering "where's my order?"

A logistics company: the current website is 5 pages on a site builder. No customer portal with tracking. The company pays 1.5 full-time managers to give answers that a self-service web portal could provide.

02

A C# desktop app with no remote access

Manual installation on every computer, updates on USB sticks. Remote work is impossible. Support eats a serious budget and gets more expensive every year. Moving to the web solves all of it at once.

03

You need a calculator with 30+ parameters and PDF output

An insurance company: a policy price calculator, a link to vehicle registration records, document generation, e-signatures, payments. Website builders and WordPress can't handle this; you need a proper web application.

04

HR processes scattered across email, Excel and chats

500 employees, and an HR team of 3 spends 60% of its time on routine work. Vacations, timesheets, documents, the knowledge base: every process lives in a separate tool. A single portal cuts that routine by 70%.

Let's estimate the budget for your task

Describe your task and we'll come back with a timeline and cost estimate within 1 business day. Want to see the product before the numbers? We'll build a free prototype.

Get a quote
What you get

Features and benefits

Concrete results we deliver for you

01

Next.js: SEO-friendly, with SPA speed

Server-side rendering so search engines can index your pages, plus client-side navigation for instant transitions. The best of both: you rank on Google and still work at the speed of a native app.

02

PWA: offline mode and install on your phone

A web app you can "install" on the home screen. It works without internet and supports push notifications. For warehouses and production floors with unreliable Wi-Fi, it's the only option that actually works.

03

Authentication and roles: SSO, 2FA, RBAC

OAuth 2.0, JWT, SSO via SAML/OIDC, two-factor authentication. A flexible role system: from a simple admin/user split to complex access matrices with object-level control.

04

Real-time updates: fresh data without reloading

WebSocket and Server-Sent Events for instant updates: chat, notifications, dashboards, tracking. Users see changes in real time, no F5 needed.

05

Any business logic: calculators, workflows, dashboards

Unlike brochure websites, a web app can handle complex logic: multi-step forms, charts, filters, document generation, integrations with external APIs.

06

Integration with your ERP, CRM and payments

The portal sits on top of your ERP or accounting system (QuickBooks, Xero, NetSuite, SAP Business One) via REST API: stock, prices, orders and documents sync automatically. Managers don't copy data by hand. In the SHATE-M case, built on top of 1C (a popular ERP and accounting platform in Eastern Europe), this moved 70% of orders online.

Process

How we work

A transparent process with clear stages and deliverables

1
Stage 1

Analysis and architecture: 1–2 weeks

We define the features, business logic and user roles. We design the API contracts and choose the stack. You get a spec with a fixed quote.

2
Stage 2

UX/UI design: 2–3 weeks

We start with a free clickable prototype of the key screens in 5 days, before any contract. Then user flows, wireframes and the full UI design. Mobile-first for responsive apps.

3
Stage 3

Development: 4–14 weeks

Frontend (SPA/SSR), backend (API), authentication, business logic. For an MVP these stages run in parallel, so the first working version arrives in a month. A demo every 2 weeks, TypeScript on both ends.

4
Stage 4

Testing: 1–2 weeks

Unit tests, integration tests, load tests, a security audit. Test coverage of 80% or more.

5
Stage 5

Deployment and launch: 1 week

CI/CD, monitoring, backups, documentation, training. A 3-month warranty period.

Cost and timeline

What it costs

You get an exact quote within 24 hours of the call

Cost
from $4,900
What's included
  • Start with a free clickable prototype of the key screens in 5 days, before any contract
  • Customer portal with core features: from $4,900, 3–4 weeks
  • Corporate portal with roles and dashboards: from $19,900, 6–8 weeks
  • Complex app with real-time features, integrations and offline mode (PWA): $35–90K, in stages
  • You pay in stages; the code and documentation are yours

The final cost depends on scope. We'll work it out after a short call.

Prices shown are indicative and for information only; they are not a binding offer. The final cost is set in the contract once the project requirements are agreed.

From a customer portal to a full platform

A web app is the fastest way to give your business a working tool: a customer portal from $4,900, a corporate portal with roles and dashboards from $19,900. We start with a free clickable prototype in 5 days, so you see the key screens before any contract or prepayment. The SHATE-M B2B portal case shows how big a "customer portal" can get: a catalog of 500,000+ items on top of 1C, with dealers placing 70% of orders online. Another scale: an analytics platform with 33 pages and 39 data marts, built in 6 weeks.

If you're launching a product with subscriptions and billing, that's a separate service: SaaS development. If you need a system that goes deeper than a portal (an ERP, an integration bus, a legacy migration), see custom software development. You can estimate your project with the cost calculator, and the price ranges for every service are on the pricing page.

Case studies

Real results

Projects where we applied this service

Case study: ERP modernization and a B2B portal for an auto parts distributor
70%of orders go through the portal

ERP modernization and a B2B portal for an auto parts distributor

Auto parts and distribution

Experience from our CTO's portfolio: ERP modernization and the launch of a B2B portal for a large auto parts distributor with a catalog of 500,000+ items. 1C (a popular ERP and accounting platform in Eastern Europe) connected via REST API, search by VIN and cross-reference numbers through TecDoc, dealer accounts with personal pricing. The project was completed before March Code was founded.

70%of orders go through the portal
500K+catalog items with VIN search
into 1Corders arrive with no manual entry

«Dealers stopped calling managers to ask whether something is in stock: they see the stock in the portal themselves. An order takes minutes and goes into 1C without anyone retyping it. Within a year, 70% of our total turnover went through the portal, and that changed how our sales department works.»

— Sergey Deineko, Business Development Director

Case study: ERP/FSM Platform for Managing Contractors in the US
15 minfrom request to crew assignment, down from 28

ERP/FSM Platform for Managing Contractors in the US

Contractor management

An ERP/FSM (field service management) platform for running field service crews and contractors in the US. It covers the full cycle in one window: request intake, dispatching, GPS tracking of crews, job completion control, billing and analytics. It comes with a mobile app for crews with photo reports and offline mode.

15 minfrom request to crew assignment, down from 28
since 2019platform in production
1 systemrequests, GPS, billing and analytics

«This team built a platform that holds up under 3x business growth. The dispatcher sees every crew in real time and billing runs on its own, so we no longer close the month two weeks late. The team really got the specifics of field service in the US.»

— Raz Bajwa, CEO

Case study: AI platform for lead generation and qualification
6 minto qualify a lead, down from 30

AI platform for lead generation and qualification

Marketing and sales

An AI platform for generating, scoring and qualifying B2B leads. An ML model collects data from public sources and social media, assesses how ready each lead is to buy and sets priorities for the sales team right in the CRM.

6 minto qualify a lead, down from 30
7%lead-to-deal conversion, up from 5%
4 peoplehandle the entire flow with no extra hires

«Now our reps spend their time only on people who are actually ready to buy. The scoring is spot on: leads with a score above 70 turn into deals three times as often. The platform took the load off the team and grew revenue at the same time. I used to think that wasn't possible.»

— Pavel Kuryanov, Founder

Case study: Payment System MVP with Banking API Integrations
3.5 mofrom idea to a working MVP

Payment System MVP with Banking API Integrations

Financial technology

An MVP of a payment platform with KYC/AML verification, multi-currency transfers and banking API integrations. We launched it in 3.5 months, in time for an investor demo day, and after the demo day the startup closed its seed round.

3.5 mofrom idea to a working MVP
10K+transactions in the first month of beta
0KYC/AML issues raised by partner banks
FAQ

Frequently asked questions about Web apps

Answers to the questions we hear most often

A clickable customer portal prototype in 5 days, free

Customer portal from $4,900, prototype free

Prices are indicative and not a binding offer.

We build an interactive prototype of up to 5 key screens of your customer account, portal or dashboard. Judge the solution before any contract or prepayment.

Step 1 of 2 · Task

Keep exploring

Read next

How Much Does a Website Cost in 2026Article

Pricing · 16 min

How Much Does a Website Cost in 2026

What a website costs in 2026, from a $1,500 landing page to a $50,000 online store. A price table, CMS vs custom development, and the hidden costs.

Learn more
ERP/FSM Platform for Managing Contractors in the USCase study

Contractor management

ERP/FSM Platform for Managing Contractors in the US

An ERP/FSM (field service management) platform for running field service crews and contractors in the US. It covers the full cycle in one window: request intake, dispatching, GPS tracking of crews, job completion control, billing and analytics. It comes with a mobile app for crews with photo reports and offline mode.

Learn more
Payment System MVP with Banking API IntegrationsCase study

Financial technology

Payment System MVP with Banking API Integrations

An MVP of a payment platform with KYC/AML verification, multi-currency transfers and banking API integrations. We launched it in 3.5 months, in time for an investor demo day, and after the demo day the startup closed its seed round.

Learn more
ERP modernization and a B2B portal for an auto parts distributorCase study

Auto parts and distribution

ERP modernization and a B2B portal for an auto parts distributor

Experience from our CTO's portfolio: ERP modernization and the launch of a B2B portal for a large auto parts distributor with a catalog of 500,000+ items. 1C (a popular ERP and accounting platform in Eastern Europe) connected via REST API, search by VIN and cross-reference numbers through TecDoc, dealer accounts with personal pricing. The project was completed before March Code was founded.

Learn more
Website Cost CalculatorCalculator

2 minutes · free

Website Cost Calculator

This calculator estimates the cost of a website: a landing page, a corporate site, an online store or a Next.js web app. It accounts for design, page count, features (user accounts, payments, filters, search) and SEO. You get a budget and a timeline in 2 minutes.

Learn more