Utilities
Free tools that run in your browser, with no sign-up.
Tools you can use now
Which AI suits you?
Five questions about purpose, privacy, budget, device and experience, and a reasoned recommendation linking to the comparison.
Personal data cleaner
Replace emails, phone numbers, Spanish ID numbers, IBANs, cards and addresses with labels before pasting text into ChatGPT, Gemini or Copilot. Runs in your browser.
Prompt builder
Build a good prompt by filling in six fields: role, task, context, format, tone and limits. Free and in your browser.
All utilities run inside your browser: what you type is not sent to any server or stored in an account. That means you can run a real email through the cleaner before pasting it into an AI chat, or try the prompt builder with details from your job.
A typical use: paste a customer email with their phone number and ID into the cleaner, copy the anonymised version, then use the builder to prepare the request (“summarise this email in three points and suggest a polite reply”). If you are not sure which AI tool to use, the quiz recommends one based on your task, budget and how much you care about privacy.