You've been quoted €6000-15000+ for a mobile app and you're stuck on one question: will it earn that back, or is it money set on fire? Here's the honest version most agencies won't give you, because they only get paid if you say yes: most businesses don't need an app. A good, fast, mobile-friendly website does the same job for a fraction of the price. But for a specific set of businesses, an app pays for itself fast. Below are the exact criteria to tell which group you're in.
The real cost isn't just the build
The sticker price is the smaller half of the story. A custom app means an ongoing commitment most owners don't budget for:
- Build: MVP from €6000-12000, a full native product €15000+.
- Two stores forever. Apple Developer Program is $99/year, Google Play is $25 once. Both have review processes that can reject you over a small detail.
- Maintenance: budget 15-20% of build cost per year. iOS and Android ship a new major version every autumn, and your app has to stay compatible or it slowly breaks.
- The install barrier. This is the one people forget. A website opens the second someone taps a link. An app has to be searched for, downloaded, account-created, opened. Industry data is brutal here: a large share of installed apps get opened once and never again. You're not just paying to build it, you're paying to convince people to install it.
If your honest answer to "will people open this more than once a month" is no, a website wins before you've spent a euro.
When an app genuinely pays off
An app earns its cost when it does something a website structurally can't, or does it so much better that retention jumps. Five honest signals:
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Repeat usage. People open it weekly or daily, not once a year. A coffee shop loyalty app, a gym, a fitness tracker, a banking-style dashboard. If usage is rare and occasional, the icon on the home screen is wasted.
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Loyalty and push as a real channel. An app icon on the home screen is free real estate, and native push notifications actually arrive and get tapped. If your business runs on bringing the same customer back (offers, points, streaks, "your table is ready"), push is a channel a website can't match on iPhone. This alone can justify the build for retail, food, and fitness.
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Real offline use. People use it where there's no signal: a field-service tech in a basement, a delivery driver, a checklist on a construction site, a travel guide abroad. A website needs the network; an app can carry its data with it.
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Device features. Bluetooth, NFC, the camera doing real work (scanning, AR try-on), background location tracking, motion sensors, Apple Health / Google Fit. If your product idea depends on the hardware, you need a native app, full stop.
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You want your own ordering or booking instead of feeding an aggregator. This is the one I push hardest. If you're paying 20-30% to Glovo, Pyszne, or Booksy on every order, your own app turns repeat customers into commission-free, direct relationships. Do the math: if an aggregator takes €2000/month in fees from you, a €10000 app pays for itself in five months and keeps paying after.
If two or more of these are true for you, an app is probably a real investment, not a vanity buy.
When a good website is enough
Be honest with yourself if this list sounds like you, because building an app here is the expensive mistake:
- People interact with you a few times a year. A dentist, a law firm, a contractor, a one-off service. They Google you, book, and leave. Nobody downloads an app to visit twice a year.
- You mainly need to be found and trusted. A fast site with strong SEO, a Google Business Profile, reviews, and a clear booking form does this far better than an app nobody can find.
- "Our competitor has an app." This is the single weakest reason I hear. A competitor's app sitting unopened on a phone is not a threat. Match them on a better website and faster booking instead.
- You're testing whether the idea even works. Validate demand with a website first. Spending €12000 to find out nobody wanted it is the most expensive way to learn that lesson.
I'll tell a fair number of people who come to me asking for an app that they don't need one yet. It costs me a sale and it earns me trust, which is the better trade.
A real one I shipped
When the criteria do line up, the app is worth every euro. I built Body-Forge, a fitness app, for exactly this profile: daily repeat usage, workout tracking that works offline in a gym with bad signal, push to keep people on their streak, and motion data from the phone. That's a textbook "yes" - none of it works as well on a website. You can see it here: Body-Forge.
The difference between that and a business that came to me wanting an app "because everyone has one" is exactly the five criteria above.
What it costs if you're a yes
I'm one senior developer in Poland, not an agency, so you're not paying for account managers:
- MVP from €6000-12000, iOS + Android, 6-12 weeks, submitted to both stores.
- Full native product €15000+ for chat, maps, deep integrations, offline sync.
- Most business apps run on React Native + Expo - one codebase, both platforms, real native performance. Instagram and Shopify run on it. It cuts the budget 40-60% versus building two separate apps.
If you're not sure which group you're in, that's the most useful 30 minutes you can spend before committing a five-figure budget. Tell me what the app would do and who'd use it, and I'll tell you straight whether to build it or put the money into a better website. See the mobile app development page, or just get in touch - you'll have an honest read and, if it makes sense, a fixed quote within 24 hours.
FAQ
Does my business actually need a mobile app? Probably only if two or more of these are true: people use it weekly or daily, push notifications and loyalty are a real channel for you, it needs to work offline, it relies on device hardware (Bluetooth, NFC, camera, sensors), or you want your own ordering/booking instead of paying 20-30% to an aggregator. If you mainly need to be found and booked a few times a year, a good website does the same job for far less.
Is a mobile app or a website better for my business? For most businesses, a fast mobile-friendly website. It opens instantly from a link, costs a fraction of an app, and gets found on Google. An app wins when you need repeat daily use, native push, offline work, or device features - then the install barrier is worth crossing.
Is "my competitor has an app" a good reason to build one? No, it's the weakest reason there is. A large share of installed apps are opened once and never again, so a competitor's unopened app isn't a threat. You usually beat them faster and cheaper with a better website and easier booking than by matching their app.
How much does a mobile app cost and how long does it take? An MVP runs €6000-12000 and ships in 6-12 weeks on both iOS and Android. A full native product with chat, maps, and integrations is €15000+. On top of the build, budget 15-20% per year for maintenance, plus $99/year for Apple and $25 once for Google Play.
How do I know if an app will pay for itself? Do the unit math. If an aggregator like Glovo or Booksy takes €2000 a month in fees, a €10000 app that moves those customers to direct orders pays back in five months. If usage is rare and there's no commission to win back, the app likely won't earn its cost - a website will.
