1 All tools
Open one and it works straight away — nothing to install, nothing to configure. Tap Open tool to launch it in a new tab.
2 How they work
The same three rules hold for every tool on this page.
NO UPLOAD
Your files are read by the browser and stay there. There is no server to send them
to, so nothing can be logged, cached or leaked on the way.
NO ACCOUNT
No sign-up, no API key, no daily quota. Settings and saved sheets live in this
browser's own storage, on this device only.
OFFLINE
Once a tool has loaded — and, for the two AI tools, once the model has been cached
on the first visit — it keeps working with the network switched off.