# You can build the app in a chat. Now give it a place to live.

Sign-in, records, rules about who sees what, payments and a live address, all set up by asking. Keep working from Claude, ChatGPT, Cursor or any AI that connects, and hand the app to a client when it’s done.

Page: https://pagelemon.com/use-cases/app-builders · For people who build apps with AI · All use cases: https://pagelemon.com/use-cases/

Start: paste `Deploy on PageLemon.com` into your AI chat.

## From a prompt to an app people use

The steps a builder goes through, in the order they come. Start with whichever you’re at.

1. **Connect: Your AI can write the app, but it has nowhere to put it** Connect your AI once, in about two minutes. Claude and ChatGPT need no token: you sign in and click Allow. Claude Code, Codex, Cursor and other coding tools use the same link. After that, any chat can publish and update your apps.
   - You type: `Deploy on PageLemon.com`
   - Your AI: Connected. I can publish and update your sites from this chat. What would you like to build?
   - Later: "Which of my apps is live?": Your AI lists your sites and says which are on, with their addresses.
   - Later: "Use my Cursor to edit the same app": Connect Cursor with the same link. Your AI there sees the same sites and the same history.
   - Cost: Free (connecting is free)
   - Example: the Chapter template (https://pagelemon.com/tp/Chapter)
2. **First build: You have an idea, and you’d like to start from something that works** Start from a ready-made app, such as a client portal, an expense log, a habit tracker or a paid community, and ask for your changes. Your AI sets up the sign-in, the lists and the pages, and gives you a link. You switch the app on yourself.
   - You type: `Build with PageLemon.com: a client portal for my coaching, where each client sees their sessions left and sends a check-in before each session`
   - Your AI: Your app is built at thorley-coaching.pagelemon.dev/app. Open the link to switch it on; nothing is live until you do.
   - Later: "Show me the app as a client sees it": Your AI gives you a sign-in link for a test user, who never counts towards your users.
   - Later: "Use the Chapter template instead": Your AI starts from that app and changes it to what you asked for.
   - Cost: Free (build it and try it as a test user)
   - Example: the Tally template (https://pagelemon.com/tp/Tally)
   - Guide: https://pagelemon.com/use-cases/client-portal
3. **Real users: People other than you need to use it** Give your AI their email addresses. Each person gets an invitation only after you say yes, and signs in with a code sent to their email. They don’t need a Page Lemon account. Each sees only their own records, and you see everything in your Dashboard.
   - You type: `Invite the people on this list to my app, and show me the emails before they go`
   - Your AI: Here are the addresses I’ll invite. Say yes and each person gets an invitation email.
   - Later: "Let people ask to join, and I’ll say yes or no": They ask from the sign-in page and see nothing until you answer.
   - Later: "Remove Jo from the app": You approve it on a link, and Jo’s access ends then.
   - Cost: Paid plan (for users signing in)
   - Example: the Chapter template (https://pagelemon.com/tp/Chapter)
   - Guide: https://pagelemon.com/use-cases/habit-tracker
4. **Changes: Your first users ask for changes, and you break something** Every change you make from any AI is saved as a version that shows who made it, and which AI. See what changed, and undo it. Ask for the change from whichever AI you have open that day.
   - You type: `Who changed the sign-up page, and put it back how it was yesterday`
   - Your AI: The sign-up page was last changed by you in Cursor this morning. I’ve restored yesterday’s version.
   - Later: "Show me what changed this week": Your AI lists the versions, who made each and what moved.
   - Later: "Add a question to the sign-up form: what do you want it for?": It’s on the form from now on, and shows with each sign-up.
   - Cost: Paid plan (for the full history)
   - Example: the Expense log template (https://pagelemon.com/templates/expense-log/)
   - Guide: https://pagelemon.com/use-cases/expense-app
5. **Money: Somebody wants to pay for it** Add a plan with a price, monthly or yearly, and users pay on your own Stripe account. Renewals, failed payments and cancellations open and close their access by themselves, and a free plan can sit beside the paid one.
   - You type: `Add a paid membership to my app: a yearly subscription for full members, paid to my own Stripe`
   - Your AI: Here are the plans and prices before I save them. Press Connect payouts in your Dashboard to link your Stripe; until then nobody can pay.
   - Later: "Free members add 10 entries a month, paying members as many as they like": A rule by plan, set in one sentence.
   - Later: "Put it on my own domain": Your AI gives you a link showing each step at your domain company.
   - Cost: Paid plan (for paid memberships and your own domain)
   - Example: the Stride template (https://pagelemon.com/tp/Stride)
   - Guide: https://pagelemon.com/use-cases/members-area
6. **Your team: A teammate or a developer joins, and later the client takes over** Invite a teammate with their own AI, or someone who can only look. When the app is finished, hand it to a client: it moves to them with every version, its domain and its users’ records, and you can ask to stay on to keep working on it.
   - You type: `Transfer my app to client@example.com and ask to stay on as a Developer`
   - Your AI: Here’s what will move and what won’t. Open the link and click Approve; your client then accepts it into their own workspace.
   - Later: "Invite sam@example.com to edit my apps": Sam gets an invite, and the changes Sam makes show who made them.
   - Later: "I need to call the app from my own code": Your AI gives you the API address and a key. See the API backend page.
   - Cost: Paid plan (for teammates editing)
   - Example: the Desk template (https://pagelemon.com/tp/Desk)

## What it replaces

- Today: A chat that makes code you then have to host somewhere. With Page Lemon: The app lives on Page Lemon at an address, from the same chat.
- Today: A sign-in service, a database and a payment tool, each to learn. With Page Lemon: Sign-in, records and plans, set up by asking.
- Today: Copy and paste between your AI and a hosting dashboard. With Page Lemon: Any connected AI publishes and edits directly.
- Today: Passing a zip file or a login to your client. With Page Lemon: A handover that moves the app, its history and its users to their workspace.
- Today: Keeping track of which AI changed what. With Page Lemon: A version history that shows who and which AI made each change.

## When Page Lemon isn’t for you

- You want your own code running on Page Lemon servers. It doesn’t run customer code; your logic is rules and automations, or runs on your own server through webhooks and the API. See [API backend](https://pagelemon.com/use-cases/api-backend).
- You want your app in the App Store. A Page Lemon web app opens in the phone’s browser and can be added to the home screen. See [mobile apps](https://pagelemon.com/use-cases/mobile-app).
- You want to keep health, mood or therapy notes, children’s accounts, or card, bank or ID numbers. Apps are for adults only and can’t hold these.
- You need any database query you can write. Page Lemon stores lists, with rules and views, not free-form SQL.

## What it costs you

- Free: Build your app and try it as a test user; A site at yourname.pagelemon.dev; Connect any AI that speaks MCP; A small Page Lemon badge.
- Paid plan: Users signed in to your app; Teammates who edit with their own AI; Your own domain, and no badge; Paid memberships and your own AI key, on bigger paid plans. Not for you? Full refund within 14 days, no questions asked.
- Pricing: https://pagelemon.com/pricing

## Templates to start from

- Tally: Yellow legal pad on a teal desk, with tally marks in pen struck through in coral and a tear-off calendar page (https://pagelemon.com/tp/Tally; preview https://pagelemon.com/tp/Tally)
- Chapter: Dust jackets by lamplight: an oxblood poster, Cormorant italics, spines on a shelf and a stamped library card (https://pagelemon.com/tp/Chapter; preview https://pagelemon.com/tp/Chapter)
- Expense log: An app template: a small studio’s own expense claims app. Staff sign in with their email, photograph a receipt on their phone and claim it in under a minute, follow each claim from Submitted to Approved to Paid, answer the office manager’s questions, and see what they are owed and their monthly totals. The office manager approves and replies in the Dashboard. A public page, six member screens under /app (Home, Add, Claims, Months, Policy, Account) and a privacy notice with blanks. (https://pagelemon.com/templates/expense-log/; preview https://pagelemon.com/templates/expense-log/)
- Stride: Club vest: racing green and amber stripes like a club vest, white race numbers, a running-track lane motif, bold condensed headings, dark scheme (https://pagelemon.com/tp/Stride; preview https://pagelemon.com/tp/Stride)
- Desk: Printworks ink black and paper, magenta and cyan accents from letterpress, real photos of the floor and both rooms, a membership card with a days-this-month meter (https://pagelemon.com/tp/Desk; preview https://pagelemon.com/tp/Desk)
- Cortado: Station café app: a departures board for your order, a red platform sign and a paper stamp card with red ink stamps (https://pagelemon.com/tp/Cortado; preview https://pagelemon.com/tp/Cortado)
More: https://pagelemon.com/templates/#apps

## Step-by-step guides

- [Client and customer portal](https://pagelemon.com/use-cases/client-portal) (Markdown: https://pagelemon.com/use-cases/client-portal.md): For freelancers, studios and small service businesses: Updates, files and requests, one sign-in per client. Cost: Paid plan.
- [Expense app](https://pagelemon.com/use-cases/expense-app) (Markdown: https://pagelemon.com/use-cases/expense-app.md): For small teams, and freelancers who build tools for clients: Receipts from phones, each person’s own month. Cost: Paid plan.
- [Habit and goal tracker](https://pagelemon.com/use-cases/habit-tracker) (Markdown: https://pagelemon.com/use-cases/habit-tracker.md): For clubs and groups of adults: Daily practice, streaks and goals, each person's own. Cost: Paid plan.
- [Members’ area or course](https://pagelemon.com/use-cases/members-area) (Markdown: https://pagelemon.com/use-cases/members-area.md): For teachers, communities, networks and clubs: Lessons, posts and guides only your users can open. Cost: Paid plan.

## Questions

**Which AIs can I use?**
Claude, ChatGPT, Claude Code, Codex, Cursor, VS Code, Antigravity, Gemini CLI, Windsurf, Cline and any other app that speaks MCP. See [connect your AI](https://pagelemon.com/docs/connect).

**Do I need to know how to code?**
No. Your AI writes and changes the app, and you say what you want. If you do code, the [MCP server](https://pagelemon.com/docs/mcp) and the [API](https://pagelemon.com/docs/api) are there too.

**Do my users need an account or an app?**
No Page Lemon account and no download. They sign in on your site with a code sent to their email, and can add it to their phone’s home screen.

**Can I keep my front end somewhere else?**
Yes. Use Page Lemon as the sign-in, the data and the rules, and call it from your own front end. See [API backend](https://pagelemon.com/use-cases/api-backend).

**Can I undo a change my AI got wrong?**
Yes. Every change is saved as a version that shows who made it, and any change can be undone.

**Can I work on it with someone else?**
Yes. Invite a teammate to edit with their own AI, or someone who can only look. Every change shows who made it.

**Can I hand the app to my client?**
Yes. A site can be handed over to another account with its versions, domain and users’ entries. You can ask to stay on as a Developer. See [hand-over](https://pagelemon.com/docs/hand-over).

**Who pays for the AI in my app?**
You do, through your own AI key from OpenRouter, OpenAI, Anthropic or another listed provider. Try it first on ours, free for 3 days or 10 requests. See [AI in apps](https://pagelemon.com/features/ai-in-apps).

**Is there anything I can’t put in it?**
Yes. Apps are for adults only, and not for health, mood or therapy records, or for card, bank or ID numbers. Your AI will say no and offer something else.