How the generator works
- Describe your idea in one sentence. It does not need to be polished. "I want to organise football matches with my friends and see who is in" is enough — the generator adds the structure.
- Hit generate. The AI takes 5-15 seconds and returns the prompt, the sections it contains and a note listing the decisions it had to make for you.
- Copy and paste. One click puts it on your clipboard. Paste it as the first message in ChatGPT, Claude, Gemini or your app builder.
This is not a search box over other people's templates. Your sentence is analysed, the gaps are filled and the prompt is written from scratch, so two people never get the same result.
The five parts of a prompt that works
Every prompt that lands on the first try answers these five questions. Miss one and the model fills it in silently — that is where generic output comes from.
| Part | Question it answers | What happens if it is missing |
|---|---|---|
| Role | Whose perspective is answering? | Encyclopaedia answers: correct and flat. |
| Context | Who you are, who it is for, what exists already | Advice that does not apply to your case. |
| Task | The exact deliverable | It explains how instead of doing it. |
| Format | Table, list, JSON, copy, code | Paragraphs you have to restructure by hand. |
| Criteria | What "good" means and what to avoid | The first thing it thinks of, at the wrong level. |
The prompts generated here carry all five, plus a closing instruction that forces the model to state its assumptions out loud instead of quietly inventing. That line is what saves you from rewriting the whole prompt three times.
Real output from this generator
Both examples below come straight from the tool above, unedited.
App prompt (default mode)
Conversation mode
Why a one-line prompt is expensive
A short prompt does not save work, it moves it. The model that is not given decisions makes them itself, and usually badly: it picks the screen you did not need, invents fields you will never use and hands back something that needs five corrections. Every correction is another message — and money, on tools that charge per message.
Spending 250 words up front typically saves 5-10 iterations. That is the whole trick.
When a prompt is no longer enough
A prompt handles execution. It does not handle the decisions before it: what to build, for whom, how small the first version should be, in what order. That is what the Inputo wizard does in 7 steps: it asks the minimum, tells you what is out of scope, and returns the prompts in build order — plus a debugging assistant for when something breaks. Step one is free and asks for no card.
Build the full plan — free →Guides per tool
Keep going with the generator
Frequently asked questions
Is this prompt generator really free?
Yes. Generating prompts costs nothing and requires no signup or card. There is a limit of 8 prompts per hour per connection so the service stays up for everyone. The tool links shown with the result are invite or affiliate links: if you end up building with one of them, the commission pays for the generator.
How is this different from asking ChatGPT to improve my prompt?
It adds the decisions rather than rewording them. "Improve my prompt" returns the same request in nicer words; here role, context, data, screens, build order and acceptance criteria get filled in — and you are told which assumptions were made.
Can I use the generated prompts commercially?
Yes. They are yours: edit them, ship them, sell the result. No attribution or link required.
Does it work for building apps, or only for writing?
Both. Conversation mode covers text tasks, app mode covers AI app builders (Lovable, Bolt, Replit, Cursor) and image mode covers Midjourney, DALL·E and Stable Diffusion.
Do you store what I type?
What you type is sent to the model API to generate the prompt and is not used for training. It is not tied to your name, because there is no account to tie it to. See the privacy policy.