Just launched · Chrome Extension · Free to try

Better AI results,
one click away

PromptFox lives inside ChatGPT, Claude, Gemini and every LLM you use — enhancing, compressing, and fixing your prompts before you hit send.

See pricing

No sign-up required. Works instantly.

ChatGPTClaudeGeminiDeepSeekPerplexityMistralGrokChatGPTClaudeGeminiDeepSeekPerplexityMistralGrok
claude.ai/new

Good morning, Alex

write a email to my boss asking for raise and say my performace was good last year

Claude 4 Sonnet
Enhance
Fix

The PromptFox pill lives right inside your AI app

Features

Four modes, one button

Every use case covered, right inside your AI app.

Enhance

Turns rough ideas into precise, detailed prompts the AI actually understands.

Compress

Cuts token usage without losing meaning. Great for long context windows.

Fix

Corrects grammar, clarity, and structure so your intent comes through cleanly.

Shorten

Strips filler and gets straight to the point.

7
AI platforms supported
4
prompt modes
free
to install & try
Why PromptFox

Honest about where we are

We just launched. No inflated numbers, no fake reviews. Here's what we actually are right now.

🔥
Built for daily AI users

If you send more than a handful of prompts a day, you already know the difference a well-crafted prompt makes. PromptFox closes that gap instantly.

Zero friction, right in the page

No copy-pasting to another tool. The enhance pill sits inside ChatGPT, Claude, Gemini and every other LLM you already use.

🦊
Just launched — and improving fast

We're early and honest about it. Every piece of feedback goes straight into the next release. You're not a user number — you're a co-builder.

Got feedback or a feature idea?

We read every email. Seriously — it's just us right now.

support@libraryofapps.com
Pricing

Simple, honest pricing

Start free. Upgrade when you're ready.

Free
$0/ forever

Perfect for trying it out.

  • 10 free prompt enhancements per week
  • Works on ChatGPT, Claude, Gemini & more
  • Compress, Fix & Shorten modes
  • Prompt history (last 5)
Most popular
Pro
$3.99/ month

$47.88 billed annually

  • Everything in Free
  • Unlimited prompt enhancements
  • Tone selector (Professional, Creative…)
  • Context memory for smarter suggestions
  • Priority support & early access

Cancel anytime.

Lifetime
5 left
$89$149

Price increases to $149 soon.

  • All current and future Pro features
  • Unlimited enhancements, forever
  • Advanced AI models
  • Context memory
  • No renewals, no subscriptions

One-time payment, no renewals.

PromptFox

Start for free today

No account needed. Just install and go.

Free foreverNo sign-upWorks instantly