iMath · version 2026-08
Terms of Service & Privacy
Written to be read. iMath is a free math-fact fluency game for classrooms, made by one person; these terms are the promises that come with it. A companion page, A Note for Your Principal, explains the same thing in the language a district review asks for.
1. The short version
- We store a made-up nickname, a colour, an emoji, a scrambled PIN and
math practice data. That is the complete list for a student.
Note: students are not currently asked to type their PIN — each child in the pilot has their own device — so whoever holds a class join link can open any player in that class. Nothing behind that door identifies a child. - We never collect a student's name, student number, email, birthday, address, photo, voice or location — there is nowhere in the game to enter any of them.
- No advertising, ever. No profiling for anything except the child's own practice. No selling or sharing of student data with anyone.
- Ask, and a class's data is deleted completely.
- You confirm you're allowed to use a classroom tool at your school.
2. Exactly what is stored
| About a student | About an adult |
|---|---|
|
Rolled nickname (e.g. ZippyWaffle) Cube colour and emoji A 4-digit PIN, stored scrambled (scrypt) Which class they're in Math facts practised, right/wrong, timings When they practised |
Name and email address Role (teacher or administrator) and school Which classes you teach A record of administrative actions (who reset whose PIN) |
Our servers also see ordinary technical information any website sees — an IP address on each request, used to sign in and to stop abuse, not to profile anyone.
Why a nickname instead of a name
There is no text box anywhere in the student experience. New players are dealt a nickname from a fixed, hand-screened word list, and the server rejects anything that isn't one of those combinations. The teacher keeps their own paper note of who is which nickname; that note never enters the system. We could not identify a student if we were asked to.
3. Your class's join link
Each class gets a six-character code and a link. Anyone holding it can see that class's nickname tiles and can create a player in it, up to 36 players. It is the "anyone with the link" trade every shared document makes, and it is safe here only because what sits behind the link is 36 made-up names. You can rotate the code, switch joining off once your class is in, and remove any player who doesn't belong.
4. Security
- Encrypted in transit and at rest (Google Cloud Firestore).
- PINs are hashed with scrypt and are never visible to anyone, including you — the teacher view offers reset, never reveal.
- Five wrong PINs locks that player for 15 minutes, then longer; 40 failures across a class in ten minutes freezes logins there for 30 minutes.
- Teachers and administrators see only their own school. This is enforced by server rules, not by hiding buttons.
5. Keeping and deleting
Progress is kept while the class is in use, and for one school year after. Email admin@jagdads.com and a class — nicknames, progress, PINs, everything — is permanently deleted, normally within a few days. A record that a deletion happened is kept; the data is not.
6. The laws this is written to
- COPPA — no personal information is collected from children, and the login exists only to save a player's own progress, which the rule exempts as support for internal operations.
- FERPA — records here describe a nickname; the only key back to a child is the teacher's paper note, which stays at the school.
- SOPIPA (California) — binds us without any signature, and we meet it: no ads, no profiling, no sale, reasonable security, deletion on request.
- Ed. Code 49073.1 / AB 1584 — its checklist attaches to a district contract for services holding identifiable pupil records. We're happy to sign the standard California Student Data Privacy Agreement if a district would like one.
This is a plain-English summary written by the person who built iMath, not legal advice to you.
7. The ordinary terms
iMath is provided free and as-is, with no warranty. It may be unavailable sometimes; keep nothing here that you cannot afford to lose (progress is a practice record, not a grade book of record). Don't attempt to break into other schools' data or to disrupt the service. We may update these terms; the version is at the top of this page, and material changes will be announced to school administrators by email. Accounts that abuse the service can be closed.