How to Build an App Without Coding in 2026

Start with one useful job

You can ask an AI coding agent to build an app in plain language. Your job is to explain what people should be able to do, try the result, and tell the agent what needs to change.

This guide uses a shared task list: one person adds a task, another marks it done, and both see the update. You can start from your phone at omg.dev. The button above carries the example request into the app so you can review it before starting.

1. Describe the people and the task

A useful first request says who the app is for, what they can do, and what must be saved. Use this example or adapt it:

Build a shared task list for a small team. Let people add tasks, mark them done, and see updates on another phone. Save tasks so they survive a reload. Ask me who should have access before publishing. Test the app, then help me publish it and verify the live link.

Keep the first version small. Add due dates or reminders after adding, completing, and saving tasks work. If you only need a public page with links, say that instead of asking for accounts and a database.

2. Open the request and sign in

Open the starter, review the request, and follow the sign-in prompts. Check any plan or usage information shown before starting work. Current pricing explains the available plans.

The agent may ask questions before building. For this example, decide whether anyone with the link can edit tasks or whether each team member must sign in. Explain whether the whole team shares one list or each person has a private list.

You can ask for a layout proposal first. Tell the agent what you want to review; the workflow does not require a separate Design mode.

3. Review the working app

Open the preview when the agent provides one. Try adding a task with a short name and one with a long name. Mark a task complete. Check that an empty list explains what to do next.

Give feedback about the result you can see:

On a narrow phone screen, long task names hide the checkbox. Keep the checkbox visible and let the task name wrap.

Make one change at a time and repeat the same check after each change.

4. Check saved data and access

Ask the agent to connect persistent storage and verify it. Adding something to a screen does not prove it was saved.

• Add a task and reload the page. The task should remain.
• Open the app in another browser. Confirm the intended people can see the list.
• Mark a task done on one device. Check the result on the other.
• If the list is private, try the link while signed out. It should ask for sign-in instead of exposing the list.

Be explicit about access rules. For a private team list, ask the agent to check that someone outside the team cannot read or edit the tasks.

5. Test on your phone

Use the app at the screen size your team will use. Check the input field with the keyboard open, the add button, and the completed-task state. Ask someone else to try it without instructions.

Report failures with the action and the result:

I added “Book the meeting room”, reloaded, and the task disappeared. Fix saving and test that a task survives a reload.

If a change breaks something that worked, ask the agent to inspect the change and restore the working behavior. Confirm your saved data remains intact.

6. Publish and verify the link

When the preview works, ask the agent to publish the app and verify its live URL. A working preview and a public deployment are separate steps.

Open the final link on a second device. Repeat the saved-data and access checks on that URL. Share it with the team only after those checks pass. Later changes also need to be published and checked on the live app.

A working example to explore

For an example of shared data, see the multiplayer app walkthrough. It includes a working vote board and shows the same count changing across two browsers. That guide uses the ChatGPT integration; the task-list request here starts in the omg.dev web app.

A live example helps you explain the behavior you want. It does not replace testing your own app's storage and permissions.

Common questions

Do I need to write code?

You can describe the app and request changes in plain language. You still need to check the result and answer questions about how it should work.

How long will it take?

A small first version has fewer things to test. Sign-in, external services, and complex access rules add work. Start with the shared list, then expand it after it works for two people.

Can I do this on my phone?

You can open omg.dev in your phone browser, describe the task, and review the agent's work. Check the finished app on the devices your users have.

Is the app public as soon as the agent builds it?

Ask the agent to publish it and verify the live link. Confirm whether the app should be public or require sign-in before sharing it.

What should I build next?

Use the same process for a group poll or a small multiplayer game. Give the agent one clear task, specify who can access the data, and test the published result.