Three owners come to us in the same week. One says "we need a website", one says "we need an app", and one says "we need a portal". Two of the three are asking for the wrong thing, and it is not their fault: the words are used interchangeably by the people selling them. The difference matters because the three are built differently, cost differently by a factor of five or more, and fail differently. This guide sorts them out and ends with a four-question test you can answer in five minutes.
The one-line definitions
- A website is read. Pages about your business that people find on Google, read, and contact you from. Its job is to be found and to convert a visitor into an enquiry.
- A web application is used. It has logins, data and actions. Users see their own information and do things to it: order, approve, book, pay, download, submit. It runs in a browser on any device.
- A mobile app is installed. It lives on the phone, comes from an app store (or is installed to the home screen as a progressive web app), and can use the camera, GPS, offline storage and background notifications.
The simple test: if your site needs a login that does something, you are building an application. If that application needs what only a phone has, you are building a mobile app. Everything else is a website.
Not sure which you need? Tell us who has to log in and what they need to do. We reply within 24 hours with the right-sized build, including when the answer is the smaller one. See application development.
Book a free scoping callWebsites: the right answer for most businesses, most of the time
If your need is for customers to find you, understand what you do, trust you and contact you, you need a website, and nothing more. A good one loads fast on a phone, ranks for the searches your buyers make, shows proof, and makes enquiring a two-tap job on WhatsApp or a form. It is the smallest of the three builds and the one with the clearest return, because it feeds every other channel. Our website design page covers what a conversion-first site needs.
Where owners go wrong is adding "a customer login" to a website brief because it sounds professional. The moment a login does real work, the engineering changes, and so does the price. Add it only when customers actually need to act on their data.
Web applications: when people must act on your data
A web application is the right answer when customers, dealers, partners or staff must do things, not just read things. A dealer checks stock and places an order. A customer downloads invoices and tracks delivery. A branch manager approves a purchase. A field engineer submits a report. A founder turns a process they have run by hand into a product other businesses pay for. In each case there are accounts, permissions, data that must never be lost, and actions that must happen exactly once.
Three reasons we build applications on the web first. It works on every device today with nothing to install. It can be updated in a minute, with no store review. And with modern techniques it installs to the home screen and sends push notifications on Android, which removes the need for a native app in most business cases. We have shipped our own products this way, from a multi-branch operations system to multi-tenant SaaS, and it is the default we recommend.
Mobile apps: when the phone itself is the point
A native or cross-platform mobile app earns its cost when it needs what only a phone has: the camera for site photos and documents, GPS for attendance and route proof, offline storage for places with no signal, background notifications that must reach the person, or a daily habit that justifies an icon on the home screen. Field service teams, delivery staff, site engineers, loyalty programmes with weekly use and internal operations apps are the clear yes cases.
The honest warning is about running cost. Two platforms, store review, device testing, operating system updates every year and a server behind it all. The build is the beginning. Businesses that were not told this abandon the app by month eight. Our mobile app development page starts with a fit check for exactly this reason.
Side by side
| Website | Web application | Mobile app | |
|---|---|---|---|
| Main job | Be found, build trust, get enquiries | Let people act on data | Use the phone's hardware and habits |
| Login | None | Yes, with roles | Yes, with roles |
| Where it runs | Any browser | Any browser, installable on Android | Installed on the phone |
| Updates | Instant | Instant | Store review, user must update |
| Relative build cost | 1x | 3x to 8x | 5x to 15x including the backend |
| Yearly running cost | Low | Moderate | Highest: OS updates, two platforms, server |
| Clear yes cases | Almost every business | Portals, dashboards, SaaS, ordering, approvals | Field teams, delivery, weekly-use loyalty, offline work |
The progressive web app: the middle path most owners have not heard of
A progressive web app is a web application built so that it installs to the phone's home screen with an icon, opens full screen like an app, works offline for the parts you choose, and sends push notifications on Android. No app store, no review, instant updates. For status checks, bookings, payments, statements and most customer-facing needs it is enough, and it costs what a web application costs. It is the first thing we price when an owner says "we need an app", and often the last.
The four-question test
- Do people need to log in and act on their own data? No: website. Yes: continue.
- Will they use it at least weekly? No: web application, and keep it simple. Yes: continue.
- Does it need the camera, GPS, offline use or background notifications on iPhone as well as Android? No: progressive web app. Yes: continue.
- Can you fund a year of maintenance after launch, not just the build? No: build the web application now and revisit. Yes: a mobile app is worth scoping.
Most Indian businesses stop at question one or three. That is good news for the budget. The owners who reach question four and answer yes usually have a field team, a delivery operation or a loyalty business, and for them the app is a serious asset worth building properly.
Three mistakes to avoid
- Building the app before the backend. Every app is a web application with a phone in front of it. If the server, the data and the rules are not scoped, the app is a pretty front on nothing.
- Letting a vendor choose the biggest build. A developer who hears "app" and quotes a native build for both platforms without asking who uses it and how often is pricing their revenue, not your need.
- Forgetting who runs it in year three. Stack and hosting should be chosen for the person who will maintain the system, not for what is fashionable. For a branch business in a tier-two city that often means something a local developer can read.
Whichever you need, the method is the same: write down every screen and rule before pricing, get a fixed price per milestone, ship something small early, and keep the code and accounts in your name. Our application development and custom software development pages describe that method and the products we have built with it.
Frequently asked questions
What is the difference between a website and a web application?
A website is read: pages people find, read and contact you from. A web application is used: logins, data and actions, where users see their own information and do things to it. If your site needs a login that does something, it is an application.
Is a mobile app better than a web application?
Only when it needs what a phone has: camera, GPS, offline storage, background notifications, or daily use that justifies a home-screen icon. For most business needs a web application, often as a progressive web app, does the job at a fraction of the build and running cost.
What is a progressive web app?
A web application built to install on the phone home screen with an icon, open full screen, work offline for chosen parts and send push notifications on Android, with no app store and instant updates. It costs what a web application costs.
How much more does a mobile app cost than a website?
Including the backend it needs, a mobile app is commonly five to fifteen times the cost of a good website for an owner-run business, with the highest yearly running cost of the three because of OS updates, two platforms and a server. A web application sits between the two.
Can I start with a website and add an application later?
Yes, and it is often the right order. A website gets you found and converting now. When customers or staff need to act on data, the application is added beside it, usually on the same domain, without rebuilding the site.