How to create an app: a step-by-step guide
Reading progress: 7 min remaining
Seven steps from an idea to an app people can use: pick the problem, choose web or mobile, build with code, no-code or AI, then test and publish it.
Short answer
Creating an app comes down to seven steps: pick one problem and one user, choose web or mobile, decide how to build it (code, a no-code tool or an AI app builder such as Vibely), build a first version, add data and sign-in, test it on real devices, and publish it to the web or the app stores.
This guide walks through each step in order, with the decision you make at each one and what it costs. It works whichever way you build. Where a step is quicker in an AI app builder, it says how that works in Vibely.
1. Pick one problem and one user
Write one sentence: who the app is for and what it does for them. “A booking app for my dental clinic, so patients can request an appointment without calling” is a good sentence. “A platform for health” is not. The sentence decides everything after it, so it is worth an hour.
Then split the features into two lists: what the first version must do, and everything else. The first list should be short enough to build in a day. Everything else waits until real people have used the first version.
2. Choose web, mobile or both
| Web app | Native mobile app | |
|---|---|---|
| How people open it | A link, in any browser | Installed from the App Store or Google Play |
| Review before launch | None | Apple and Google review every release |
| Device features | Limited | Push notifications, camera, location, offline use |
| Cost to publish | Hosting, and a domain if you want one | Apple Developer Program at $99 a year, Google Play at $25 one-time |
Start on the web unless the app needs the phone itself: push reminders, the camera, location or working offline. A web app reaches people the same day, with no review queue. You can add a mobile app later on the same backend.
3. Choose how to build it
| Route | What you need | What you end up with |
|---|---|---|
| Write the code | Programming skills: Swift or Kotlin for native apps, or JavaScript with React and React Native | Full control, and the most time |
| A no-code platform | Time to learn the platform’s visual editor | An app that usually runs on that platform; check whether you can export it |
| An AI app builder | A clear description of the app | A working first version from a prompt; with Vibely, React and TypeScript code you own |
The routes are not exclusive. Plenty of apps start in an AI builder and move into a code editor once a developer joins. If that is your plan, pick a builder that gives you the code. Vibely syncs it both ways with your own GitHub repository on every plan. Our comparison of AI app builders sets the main options side by side.
4. Build the first version
In Vibely, choose Web or Mobile above the prompt box and describe the app. Three things make a first prompt work, and none of them is length: name the user rather than the feature, describe the data in one sentence, and name the look you want. For example:
Build a booking site for a dental clinic. Patients pick a treatment, choose a free time slot and leave their phone number. Show the clinic’s team and opening hours. Calm, clean, lots of white space. No login or database yet.
The last line matters. A first version without logins and a database has less to go wrong, and both are one prompt away later. Vibely writes the code, checks that it builds, and shows the app in a live preview. Then change one thing at a time: ask in the chat, or point at the part of the preview you want different.
5. Add data, sign-in and payments
Once the screens are right, give the app a memory. Most apps need three things:
- A database for what people create, such as bookings, posts or orders. In Vibely, connect a Supabase project and the agent writes the tables and the row-level security rules that keep each person’s data private. The Supabase integration is on Pro.
- Sign-in so people have accounts. See how to add Google sign-in.
- Payments if you charge. See how to add Stripe checkout for the web, or RevenueCat for in-app purchases on mobile. Not sure what to charge for? Read how to make money from an app.
Before strangers use it, run through the security checklist for vibe-coded apps. It covers the leaks AI-built apps most often have, and which of them Vibely’s free scan catches.
6. Test it on real devices
Use the app the way your users will. For a web app, open the preview on your phone as well as your laptop. For a mobile app, scan the QR code in Vibely and run it on your own phone in Expo Go while you build. Then give it to three or four people from step 1 and watch them use it without help. Where they hesitate is your next change.
7. Publish it
On the web, press Publish. The app goes live on a vibelyagent.com address with HTTPS, free on every plan, and publishing never uses credits. On Pro you can connect your own domain.
In the app stores, Vibely runs the native builds and uploads them to TestFlight and Google Play internal testing on Pro, and you submit for review from your own developer accounts. You don’t need a Mac. The App Store publishing guide covers the accounts, the review and the common rejections.
What it costs to create an app
| Item | Cost |
|---|---|
| Building and hosting a web app on Vibely Free | $0, no credit card |
| Custom domains, store publishing and more credits | A paid Vibely plan; see pricing |
| Apple Developer Program (App Store) | $99 a year |
| Google Play Console | $25 one-time |
The store fees go to Apple and Google, in your name, and the listings stay yours.
Frequently asked questions
Can I create an app for free?
Yes. Vibely’s Free plan builds web apps and native iOS and Android apps with no credit card, and publishes web apps to a free vibelyagent.com address. Putting a mobile app in the App Store or Google Play needs a paid Vibely plan plus the stores’ own developer fees.
Can I create an app without knowing how to code?
Yes. With an AI app builder you describe the app in plain language and change it the same way. With Vibely the result is still real code, React and TypeScript for the web or an Expo app for mobile, so a developer can take it further later.
Do I need a Mac to make an iPhone app?
No. Expo’s cloud build service (EAS) builds and signs the iOS app on its servers, and App Store Connect is a website. You do need an Apple Developer Program membership to publish.
How long does it take to create an app?
A first version can be live on the web in about ten minutes with an AI app builder. A finished product takes longer: most of the time goes into deciding what the app should do, testing it with real people and changing it based on what they tell you.
How do apps make money?
The usual ways are subscriptions, one-off purchases and in-app purchases. On the web, Stripe handles checkout and subscriptions. In a store app, Apple and Google require in-app purchases for digital goods, and RevenueCat manages them across both stores.