✦ free · no sign-up · instant

Better prompts,
better answers.

PromptTune rewrites your rough ideas into clear, structured prompts that get consistently better results from ChatGPT, Claude, Gemini — or any AI tool you use.

5 modes
0 sign-ups needed
100% private
Prompt Improver
Try:
Improved prompt

Three steps, better prompts

No account. No waiting. Just paste your idea and we'll structure it for you.

01

Paste your prompt

Drop in whatever you've got — a half-formed question, a single sentence, or a rough paragraph. It doesn't have to be polished.

02

Pick a mode

Choose General, Coding, Writing, Business, or Study. Each mode applies a different structure tailored to that context.

03

Copy and use it

Get a structured, clear prompt ready to paste into any AI tool. Hit "Improve Again" for additional refinement passes.

Works for almost anything

From quick questions to complex projects, clearer prompts make a real difference in the answers you get.

Coding

Debug scripts, generate functions, explain concepts — structured prompts get you working code faster.

Writing

Blog posts, emails, product copy — tell the AI exactly what tone and format you're after.

📊

Business

Proposals, reports, cold outreach — professional context gets professional output.

📖

Studying

Explain concepts, quiz yourself, summarise chapters — get explanations that actually make sense.

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Brainstorming

Generate ideas, explore angles, challenge assumptions — prompt structure opens up creative thinking.

What makes it different

🔒

Your data stays on your device

Nothing is sent to any server. All transformations happen in your browser. Your prompts are yours.

Instant results

No API calls, no loading spinners, no rate limits. Results appear in under a second.

🆓

Completely free

No subscription, no credits, no hidden costs. Use it as much as you need.

🎯

Mode-specific templates

A coding prompt and a writing prompt need different structures. PromptTune knows the difference.

🔁

Iterative refinement

Not happy with the first pass? Hit "Improve Again" to layer in more depth and precision.

🌐

Works with any AI

ChatGPT, Claude, Gemini, Mistral — better prompts improve results on every platform.

Common questions

Yes, completely. There's no account, no trial period, no credit system. Open the page and use it.
No. PromptTune applies a set of rule-based templates entirely in your browser. There are no API calls, no AI models, no external services. Think of it as a smart formatter, not an AI.
Never. Your prompts only exist in your browser. The app saves your last prompt to localStorage as a convenience — so you can pick up where you left off — but nothing is sent to any server. See our Privacy Policy for details.
Most people write prompts the same way they'd ask a colleague — conversationally, without structure. PromptTune adds a role, a clear task definition, formatting guidance, and constraints automatically. It's the difference between "explain recursion" and a well-scoped, structured instruction that gets a genuinely useful answer.
It runs an additional refinement pass on your already-improved prompt. Each pass adds a new layer — things like step-by-step reasoning instructions, edge case handling, or guidance for expert-level depth. You can run it a couple of times to dial in the level of specificity you want.
All of them. The improved prompts follow general prompt engineering best practices, so they work with ChatGPT, Claude, Gemini, Llama, Mistral, or any other language model. Copy the output and paste it wherever you're working.

Want to know more?

Learn about the project or get in touch if you have questions.

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