Web app development

A web app runs in any browser, on any device, with nothing to install. That makes it the fastest way to put a new idea in front of customers, or to replace the spreadsheets and email threads your team relies on today.

We design and build web apps from the first sketch to launch: the screens your users see, the server and database behind them, sign-in and permissions, payments, emails and the admin tools you need to run it. You get a fixed quote before we start, a working demo every week, and the full source code at the end.

Get a free consultationSee prices

What we build

SaaS productsSubscription software with accounts, teams, billing and an admin console — ready for your first paying customers.
Customer portalsLet customers place orders, book appointments, track jobs or download documents without calling you.
Dashboards and reportsLive numbers from your systems in one place, with charts, filters and scheduled email reports.
Internal toolsReplace error-prone spreadsheets with a simple app that fits exactly how your team works.
Marketplaces and directoriesListings, search, reviews, messaging and payments between buyers and sellers.
Fast marketing websitesPages that load instantly, rank on Google and are easy for your team to update.

Why work with us

  • Fixed quote and timeline agreed before work starts — no surprise invoices.
  • A working demo every week, so you can steer early instead of waiting months.
  • Mobile-first, accessible and fast: every screen is tested on phone, tablet and desktop.
  • Automated tests on every feature, so changes later do not break what already works.
  • You own the code, the domain and the hosting account. No lock-in.

Technology

We pick proven tools that suit your project and your team, never the trendiest ones.

  • TypeScript
  • React / Next.js
  • Astro
  • Node.js
  • Python
  • PostgreSQL
  • Stripe
  • AWS / Azure / Vercel

Typical prices

Small tool$1,000 – $5,000One focused app: a booking form, an internal tracker, a calculator or a simple portal. 2–4 weeks.
Business system$5,000 – $20,000Several user roles, an admin console, reports and integrations with the tools you already use. 1–3 months.
Product / SaaS$20,000+A complete product with accounts, billing and onboarding, built to grow with your customers. 3+ months.

Every project gets a fixed quote after a free consultation. Prices in US dollars.

Frequently asked questions

How much does a web app cost?

Most of our web apps cost between $1,000 and $20,000. A small focused tool is at the low end; a multi-role business system or a SaaS product is at the high end. After a free consultation we send a fixed quote, so you know the full price before we start.

How long does it take to build a web app?

A small tool usually takes 2–4 weeks, a business system 1–3 months, and a full SaaS product 3 months or more. You see a working demo every week from the start.

Will it work on phones?

Yes. Every web app we build is designed mobile-first and tested on phones, tablets and desktops. It can also be installed on a home screen like an app.

Who owns the code?

You do. At the end of the project you get the full source code and admin access to the hosting, domain and any third-party accounts.

Can you work with our existing systems?

Usually, yes. We connect to accounting, CRM, payment and email tools through their APIs, or import data from spreadsheets and older databases.

Tell us about your project

We only use your details to reply to you. See our privacy policy.

Other services

📱Mobile appsTinymo builds iOS and Android apps from one codebase and publishes them to the App Store and Google Play.🤖AI & automationTinymo builds practical AI for business: chatbots trained on your documents, document processing, and workflow automation that saves your team hours every week..🏢Business systemsCustom HR, point-of-sale, inventory, booking and ERP systems built around how your business works.