Stillpool

Settings

These settings need JavaScript, which is off in this browser, so choosing one changes nothing.

Changes apply as you choose them.

Theme
Font
Why these fonts?

Choose the font you find easiest to read. Studies have not found that special "dyslexia fonts" help people read faster or more accurately. More space between letters and words does help some readers, so try the spacing setting too.

Text size
Reading layout
Letter and word spacing
Line spacing
More reading controls

Focus mode hides the Map and Help links, the breadcrumb and the footer, so only the page you are reading is left.

Reading voice and speed

Emma is a computer voice, made with the open Kokoro model. Her readings are saved on this site. Where a part has no Emma reading yet, your device's own voice reads it.

Reading speed

The number is how many times faster than normal. 1.5 is one and a half times as fast. The voice keeps its pitch.

Move or delete progress
Move your progress

This device's save code:

Or open this restore link on the other device:

Privacy notice

This notice describes Stillpool at learn.neurobridgeedu.eu. Stillpool has no accounts and sets no cookies. What it keeps on your device is only what you asked it to keep: your progress and your settings.

Last updated 10 October 2026.

In short

  • There are no accounts and no cookies.
  • Your settings, progress and map choices are kept in this browser and are not sent anywhere.
  • Loading a page or a recording is a request to this site, which is hosted by Vercel.
  • The lessons do not call an AI service. The practice lab does, only when you press Send.
  • A message you send on the feedback page is saved on a server in the EU. Nothing is sent until you press Send feedback.
  • A cookieless Vercel count records visits to pages. See "Counting visits".

What is stored on your device

Stillpool uses local storage, the browser's own storage for one site. It is not a cookie and is never sent with a request. It holds three items, all kept until you remove them or clear this site's data in your browser:

Settings
Font, text size, spacing, colours, motion, reading ruler, the other reading choices, the reading voice, the reading speed and whether lessons show Simple or Deep. Stored as nbl:settings.
Progress
The lessons you finished, the badges you earned and the activity steps you completed. Stored as nbl:progress. If your browser blocks or fills its storage, progress may not be kept.
Map choices
Which topics you opened on the lesson map. Stored as nbl:topics.

The save code and its QR code hold your finished lessons and badges, and nothing else: not your settings, map choices or activity steps. They are made on your device and go nowhere unless you share them. Anyone who has your code can see which lessons you finished. A restore link carries the code after a # in the address, the part a browser does not send to a server, and Stillpool removes it from the address once it has used it. Restoring adds to the progress already in the browser; it does not erase it.

What the host receives

Opening a page, or playing a recording, asks this site's server for files. Stillpool is hosted by Vercel, which receives ordinary request information such as your IP address and browser details, and keeps server logs. ReadVercel's privacy policy (opens in a new tab).

Read aloud uses Emma, a computer voice recorded in advance and hosted on this site. Where a recording is missing, it uses a voice already on your device. Only voices that run on the device are offered, so the lesson's words are not sent to a speech service.

The practice lab

The practice lab at /lab/ is the one place on Stillpool that uses an AI service. It is optional, and nothing is sent until you open it and press Send. When you do, the text you typed in the lab is sent to Mistral AI, a company in Paris, which writes the reply.

The text goes through this site's server, so Vercel and Mistral process it to answer you. Stillpool keeps no copy, stores nothing on your device and logs no text. This notice says nothing about what Mistral keeps. ReadMistral's privacy policy (opens in a new tab), and leave out names and other personal details.

Feedback

The feedback page at /feedback/ is optional, and nothing is sent until you press Send feedback. When you do, what is sent is your message and what it is about: the whole site, the practice lab or one lesson.

The message goes to this site's server, then to a workflow tool run by NeuroBridgeEDU on its own server in the EU. There it is saved in a table that the makers read. Stillpool asks for no name and no account, and does not store the message on your device. The host's usual logs apply, as for any request.

To ask for a message to be removed, write to contact@neurobridgeedu.eu and quote its text. Please do not write your name, your email or anything private in a message.

Counting visits

Stillpool counts how many times its pages are opened, so its makers can see if anyone uses it. Vercel, the company that hosts this site, does the counting with Vercel Web Analytics.

When a page opens, the count records:

  • the page address
  • the site that linked here
  • the time
  • the country, and the region and city where they are known
  • the kind of device, with its system and browser, and their versions
  • the version of the counting script

It does not use cookies. It tells visits apart with a code made from the request, and Vercel resets that code every day. It does not follow you across sites or build a profile of you. The data is used for combined totals only.

A page opened with a save code, or any other text after its address, is not counted. Your answers, settings, progress and save code are not sent to the count. Readhow Vercel describes this count (opens in a new tab).

Cookies and why there is no banner

A cookie is a small file a site asks your browser to keep and send back on every request. Stillpool sets none. A cookie banner asks for consent to store things that are not needed. Here the only things stored on your device are the progress and settings you asked for, and the count sets no cookie, so there is nothing to consent to.

How this information is used

  • Settings change how lessons look and read to you.
  • Progress shows your finished lessons and badges.
  • Map choices keep your topics open or closed as you left them.
  • Text you send from the practice lab is used to write the reply to you.
  • A message you send as feedback is saved and read by the makers, to improve the site.
  • The host serves the site and keeps logs to run it; the count shows how often pages are visited.

Your choices

In Settings, Delete my progress removes finished lessons, badges and steps from this browser. It leaves your settings and map choices. To remove all three, clear this site's data in your browser. A save code you kept can bring your progress back, so delete the code too if you do not want that.

Your rights

Under the General Data Protection Regulation (GDPR), the European law on personal data, you may ask what is held about you, ask for it to be corrected or erased, object to its use and ask for a copy. Stillpool has no accounts, so the only personal data it can see is what the host's logs hold, any email you send and any text you send from the practice lab, which it does not keep. A feedback message is kept: see "Feedback". You may complain to the Irish Data Protection Commission atdataprotection.ie (opens in a new tab).

Contact

Write to contact@neurobridgeedu.eu and put "Privacy" in the subject. Please do not email a save code.