Start free. Pay when you're building for real.
Free
$0
Try it properly.
Start free- A free building trial, then a little more each week
- Unlimited apps to build and test
- Build and preview in your browser
- A free mini backend for testing every app: 100 MB of database and 500 MB of files
- Version history and one-click undo
- Your projects are private
Builder
Most popular$29 a month
Build and launch your first app.
Choose Builder- All Free features
- Weekly building allowance on our best model
- Unlimited apps to build and test
- Your first live app included, with hosting, sign-in and daily backups
- Each live app: 10,000 people a month, 2 GB of database and 30 GB of files
- More live apps: $10 a month each
- Beyond that, $0.003 a person
- AI in your app at the model's price plus 15%, only when used
- Test on your iPhone, with Apple’s developer membership
- Publish to the App Store, with an Apple review check first
Pro
$79 a month
More building, and room to grow.
Choose Pro- All Builder features
- About 2.7× Builder’s weekly building
- Unlimited apps to build and test
- Your first live app included, with hosting, sign-in and daily backups
- Each live app: 25,000 people a month, 3 GB of database and 100 GB of files
- More live apps: $25 a month each
- Beyond that, $0.003 a person
- AI in your app at the model's price plus 15%, only when used
- Priority builds
- Priority support
Max
$199 a month
The most building, for big audiences.
Choose Max- All Pro features
- About 7× Builder’s weekly building
- Unlimited apps to build and test
- Your first live app included, with hosting, sign-in and daily backups
- Each live app: 50,000 people a month, 5 GB of database and 300 GB of files
- More live apps: $50 a month each
- Beyond that, $0.003 a person
- AI in your app at the model's price plus 15%, only when used
- Highest build priority
- Priority support
Prices in US dollars; tax may be added at checkout. Cancel anytime. Fair use: up to 500 requests to your app's server per person a month; very busy apps count each further 500 requests as another person.
Your app on your iPhone
Building and trying your app in your browser is free. Putting it on your iPhone and publishing it need a paid plan and Apple’s developer membership. Apple charges $99 a year to publish any app. There’s no way around it. Join now and your app is on your iPhone in about a minute, and every change appears in seconds.
Building resets every week
Each plan includes a weekly amount of building, and your week runs from the day you subscribed, so your first week is a full one. You'll always see how much of it you've used. Free starts with a building trial, then a little more each week. Anything that fails on our side never counts. If you run out, wait for the reset or upgrade: an upgrade starts straight away and you only pay the difference for the rest of the month. There's no pay-as-you-go, and your live apps keep running either way.
Your first live app is included
Build and test as many apps as you like. A live app is one your users can reach, and your plan includes your first. Every live app comes with its hosting, sign-in and daily backups, and the same people and storage: people a month, 10,000 on Builder, 25,000 on Pro and 50,000 on Max. Each further live app is $10 on Builder, $25 on Pro and $50 on Max a month, charged for the days it's live, with its own people and storage too. Beyond what your live apps include it's $0.003 a person, and $1 per GB a month for databases and $0.05 for files. Your apps never stop, and we tell you if they go over.
AI in your app, only when used
If your app reads photos, listens or talks back, its AI is billed by use at the model's price plus 15%. Nothing is charged when your app doesn't use AI, and you set a spending limit for each app. It's never part of your plan's price. AI comes with every paid plan: on Free you can build AI features, and they switch on when you upgrade.
Questions about cost
How much does it cost to run?
Your plan covers your first live app. Every live app includes its hosting, database, sign-in, file storage and daily backups, and a set number of people a month. The only extras are more live apps, people and storage beyond what your live apps include, and AI in your app (on paid plans), billed by use and only if your app uses it. Your apps never stop for going over, and we tell you if they do.
Can I make money from it?
You can charge subscriptions from day one, and we help you choose an idea with demand, price it and get your first customers. We'll never promise a number; we'll show you the real ones.
How does the weekly building limit work?
Each plan includes a weekly amount of building, shown as a dial in the app. Your week runs from the day you subscribed (or signed up, on Free), and unused building doesn't carry over. Free starts with a building trial, then a little more each week. Anything that fails on our side never counts.
What happens if I run out?
Wait for next week’s reset, or upgrade: it starts straight away and you only pay the difference for the rest of the month. There’s no pay-as-you-go, and running out of building never affects your live apps.
What counts as a live app?
One your users can reach. You can build and test as many apps as you like; your plan includes your first live app, and each further one is a set price a month, with the same people and storage as the first. Turn one off any time to stop paying for it.
Can I cancel anytime?
Yes. Your plan runs to the end of the period you’ve paid for, and you can export your app and its data at any time.
Results vary. Most apps earn little without consistent work, and we never promise income.