Saccade privacy
Sky Wolf Studio (SWS Strategic Media LLC). Last updated October 23, 2026.The short version
Saccade runs on your device. It has no account, no ads, no analytics and no subscription. The text you read and the way you like it set up stay in your browser or in the app on your phone. The one thing that ever leaves your device is a request for a free book, when you ask for one.
What the app stores
Your settings (speed, words per flash, pauses, font, size, colours), the text you last loaded and where you were in it. All of it lives in this browser's own local storage under keys that begin with saccade. Clearing the site's data, or uninstalling the app, deletes all of it. There is no copy anywhere else.
What leaves your device
Nothing while you read. Pasted text is never sent anywhere.
The Library is the one feature that uses the network, and only when you use it:
- Browsing and search. The most read lists, the subjects and the search box ask a small relay run by Sky Wolf Studio on Google Cloud (
cloudfunctions.net), which reads Project Gutenberg's own public catalogue and Top 100 pages (gutenberg.org) and answers with matching books. The words you type are used for that lookup and nothing else. - Opening a book. Tapping a book asks the same relay for its text. Because gutenberg.org does not allow web pages to read it directly, the relay fetches it and passes it on. The relay forwards only the book's own address or your search words, adds nothing, and keeps nothing: no identifier, no address, no log of who asked for what.
The books themselves are public domain and free. The opening passages built into the Library never touch the network.
What the app does not do
- No accounts, no sign in, no passwords.
- No advertising, no ad networks, no tracking pixels.
- No analytics of any kind.
- No access to your microphone, camera, contacts or location. If you turn on "Keep the screen awake", the app asks the phone to keep its own screen on while you read, and nothing more.
- No sale or sharing of data, because there is none to sell or share.
Sharing text into the app
On a phone where Saccade is installed, you can share a page or a selection into it from another app. The shared text is placed in the Text box on your device. It is not uploaded.
Children
Saccade is a reading tool suitable for any age. It collects no personal information from anyone.
Changes
If this page changes, the date at the top changes with it. Any new behaviour that would send data off your device will be described here before it ships.
Contact
Sky Wolf Studio, stephen@skywolfstudio.com.