Last updated 23 September 2026
Cookies & storage
SpellChirp sets no advertising cookies, no analytics cookies and no third-party trackers. That’s why you aren’t reading this through a consent banner. What it does use is ordinary browser storage, to remember your own words and settings.
What’s stored on your device
| Name | Kind | What it’s for | How long |
|---|---|---|---|
spellchirp:v1 | Local storage | Your children, word lists, attempts, streaks, handwriting and any pictures on word cards | Until you clear it |
spellchirp:outbox:v1 | Local storage | Changes waiting to sync to your account, so nothing is lost offline | Until they have synced |
spellchirp:owner | Local storage | Which account the saved nest belongs to, so one family’s words never sync into another’s | Until you clear it |
spellchirp.dict.v1 | Local storage | Dictionary answers already fetched, so a word is never looked up twice | Until you clear it; the oldest drop out after 600 words |
spellchirp:voice | Local storage | Which voice reads the words, and how fast | Until you clear it |
spellchirp:reading | Local storage | Reading settings: font, letter and line spacing, syllables, timers, list length | Until you clear it |
spellchirp:sfx | Local storage | Whether the sound effects are on or off | Until you clear it |
spellchirp:firstrun | Local storage | Whether you have been through the welcome steps, and which tips you have closed | Until you clear it |
spellchirp:role | Local storage | Whether you signed in as a parent or a learner, so you land in the right place | Until you clear it |
spellchirp:under13 | Local storage | That the sign-in screen was given a birth year under 13, so it does not offer a second go. Only the yes, never the year | Until you clear it |
spellchirp:follow-class | Local storage | A class code you tapped Follow on before signing in, so it can follow once you have | Until you sign in |
spellchirp:class-lists-seen | Local storage | Class lists you have dismissed from the dashboard, so they stay dismissed | Until you clear it; only the last 50 are kept |
spellchirp-audio | IndexedDB | Words already read aloud, so they replay instantly and work offline | Until you clear it, or press “Clear saved audio” in Settings |
keyval-store | IndexedDB | The photo reader’s English language data, so it downloads only once | Until you clear site data |
sb-…-auth-token | Local storage | Keeps you signed in. Only exists if you created an account | Until you sign out |
transformers-cache | Cache storage | The “Chirpy Natural” speech model, if you chose to download it | Until you clear site data |
Are these cookies?
Technically most of them aren’t — they’re local storage and IndexedDB rather than cookies — but the rules treat them much the same, so we’ve listed them anyway. Every one is strictly necessary to do the thing you asked for: remember your words, remember your voice, keep you signed in. None of them tell us anything about you, and none follow you to other sites.
Getting rid of them
Clear site data for spellchirp.com in your browser settings and all of it goes. Saved audio has its own button in Settings → Clear saved audio. Signing out removes the auth token. Nothing here survives a cleared browser, because none of it lives anywhere else unless you created an account — see Privacy for that.
Anything unclear? privacy@spellchirp.com.
This page describes how SpellChirp works today, in plain English. It isn’t legal advice, and if your family’s situation depends on the fine print you should take your own.