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The backend for your phone app.

Your iOS or Android app signs users in, including Sign in with Apple and Google, and keeps their data on Page Lemon. You build the app with your AI and publish it to the app stores yourself.

Paste this into your AI chat

Deploy on PageLemon.com
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try-cortado.pagelemon.dev/app

The Cortado template, as your AI fills it in: Station café app: a departures board for your order, a red platform sign and a paper stamp card with red ink stamps
A real template: Cortado. Preview it (opens in a new tab)

From the idea to an app people sign in to

The steps in the order they come. Start with whichever you’re at.

  1. The sign-in
  2. Their data
  3. Notifications and memberships

  1. The sign-in

    Your phone app needs people to sign in

    People sign in with Apple or Google, or with an emailed code. The same account works on your web app and your phone app.

    try-cortado.pagelemon.dev/app

    The Cortado template: Station café app: a departures board for your order, a red platform sign and a paper stamp card with red ink stamps
    A real template: Cortado. Preview it (opens in a new tab)

    You type in your AI chat

    Build my mobile app and run its backend on PageLemon.com: people sign in with Apple, and each sees their own orders

    Later, you might ask

    • “Let anyone sign up” Your AI changes the setting.
    • “Show me the orders so far” Your AI reads them only if you allow it for that list.

    Paid plan: for users signing inSign-inApps

    Step-by-step guide

  2. Their data

    Each person sees their own things

    Orders, entries and cards live in lists with rules: each user sees only their own, and you see everything in your Dashboard.

    try-cortado.pagelemon.dev/app/card

    The Cortado template: Station café app: a departures board for your order, a red platform sign and a paper stamp card with red ink stamps
    A real template: Cortado. Preview it (opens in a new tab)

    You type in your AI chat

    Add a stamp card: ten stamps earn a free coffee, and staff scan the QR to add one

    Later, you might ask

    • “How many cards were stamped today?” Your AI shows the counts.
    • “Change it to eight stamps” Your AI changes the rule.

    Paid plan: for users signing inLoyalty cardApps

    Step-by-step guide

  3. Notifications and memberships

    Tell people something, and charge for a plan

    Your app can send notifications, within a monthly cap on your plan. Memberships bought in your app through the App Store or Google Play open the same plan, through RevenueCat.

    try-mat.pagelemon.dev/app

    The Mat template: Sand-to-lilac wash with arched windows that fill with dawn or evening light, in olive and clay
    A real template: Mat. Preview it (opens in a new tab)

    You type in your AI chat

    Notify members when a class is full

    Later, you might ask

    • “Show me who is on the Gold plan” Your AI lists the members.
    • “Pause notifications for tonight” Your AI changes the setting.

    Paid plan: for notifications and membershipsPaymentsApps

    Step-by-step guide

What it replaces

The usual way, and the one-chat way.

  • TodaySign-in written and secured for every app.

    With Page LemonSign in with Apple and Google, and an emailed code, run for you.

  • TodayA server just to keep users’ data.

    With Page LemonLists with rules, run by Page Lemon.

  • TodayA separate service for notifications.

    With Page LemonNotifications from the same place, within your plan’s cap.

  • TodayA web app and a phone app with two sign-ins.

    With Page LemonOne account works on both.

What it costs you

Free is for building and trying it as a test user. A paid plan lets your users in; bigger ones add more apps and notifications.

Free

No card needed.

  • Build and try it as a test user
  • A small Page Lemon badge

Paid plan

  • Users signed in to your app
  • Notifications, within a monthly cap
  • Your own domain, and no badge

Not for you? Full refund within 14 days, no questions asked.

See pricing

See the real thing first

Every picture on this page is a real template. Open one, click around, then ask your AI to make it yours.

More templates like these

Step-by-step guides

Questions

Does Page Lemon publish my app to the stores?

No. Your AI helps you build it, and you publish it to the App Store and Google Play yourself, from your own developer accounts.

Can people sign in with Apple?

Yes: Sign in with Apple and Google in a phone app, and an emailed code on the web. See the API docs.

Can I sell memberships in the app?

Yes. App Store and Google Play purchases open the same membership, through RevenueCat. See selling subscriptions in your app.

Do my users need a Page Lemon account?

No. They sign in on your app.

How many users can I have?

It depends on your plan: see pricing.

All use cases

Give your phone app a backend today.

Paste one line into your AI.

Deploy on PageLemon.com
Join waitlist See templates

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