Privacy Policy
Effective 8 November 2026 · Updated 15 November 2026 (MIMA Math and MIMA Words beta lists)
Mimatachi (“we”, “us”) is a small family side project run by two parents in Nagoya, Japan. We make gentle educational media for children — our own son first of all — including the MIMA TV videos, the MIMA Math and MIMA Words apps and MIMA Coloring printables. This policy explains what information we handle across our website (mimatachi.com / mimatachi.jp) and our apps. It is written for parents, because our audience is children.
The short version
Our children's products are designed to collect nothing. The MIMA Math app works entirely on the device: no accounts, no advertising, no analytics, and no information is sent to us or to anyone else. The one exception on this website is entirely a parent's choice: if you join one of our beta lists (MIMA Math or MIMA Words), we collect only the signup details described below, and use them only for that beta.
The MIMA Math app
- No personal information is collected. The app does not ask for names, email addresses, photos, location, or any other personal information.
- Handwriting stays on the device. Answers a child writes are recognised and checked on the device itself. Handwriting is never uploaded or stored by us.
- Progress stays on the device. Practice history and settings are stored only in the app on your device and are removed when the app is deleted.
- No advertising, analytics or tracking. The app contains no ads, no third-party analytics, and no behavioural tracking of any kind.
- No external links for children. Any links intended for parents (such as this website) sit behind a parental gate.
This website
This website is a simple static site. It sets no cookies and runs no analytics or advertising. Our hosting provider may keep standard technical server logs (such as IP addresses and browser type) for security and reliability; we do not use them to identify or profile visitors. The beta signup forms are the only forms on the site; they use Cloudflare Turnstile, an anti-spam check, which processes technical signals to tell people from bots.
The beta lists (MIMA Math and MIMA Words)
If you register interest in testing MIMA Math or MIMA Words before their App Store releases:
- What we collect. A parent's email address (required), and — only if you choose to give them — a device type (iPhone / iPad / both), your child's age range, and — on the MIMA Math form only — a preferred numeral system (Western / Persian / both). We never ask for a child's name, birthdate, or any personal information about a child.
- Why. Only to run the beta: to choose a small, varied group of families, to send TestFlight invitations when they become available, and to email about beta updates and feedback. Nothing else — no marketing, no newsletters, and we never sell or share the list.
- Where it is stored. Signups are stored in a database in our own Cloudflare account, protected by Cloudflare's anti-spam checks. Access is limited to us. If you are selected and accept an invitation, your email address is entered into Apple's App Store Connect so Apple can send your TestFlight invitation; Apple's own privacy policy then applies to the test itself.
- How long we keep it. Only while the beta is being organised and run. The list is deleted within 90 days after the beta ends, and immediately at any time if you ask.
- Your choice. Joining is optional and needs your explicit consent (the tick-box on the form). To withdraw and have your details deleted, email mimatachi.official@gmail.com — one message is enough, no questions asked.
Colouring books and purchases
MIMA Coloring books are sold through Payhip. When you buy one, Payhip processes your payment and handles your details under its own privacy policy; we receive only what we need to fulfil the order (such as your email address for delivery and support).
When you contact us
If you email us, we will see your email address and whatever you choose to tell us. We use it only to answer you, and we do not add it to any mailing list.
Children's privacy
Our products are made for children under the direction of their parents and teachers. Because our app collects no personal information from anyone, there is nothing for us to share, sell, or lose. The only child-related detail anywhere in our services is the optional age range a parent may give on the beta forms above — a range, never a name or birthdate. We never sell personal information, about children or adults.
Changes to this policy
If a future version of our products ever handles information differently, we will update this page first and note the change here before the new behaviour takes effect.
Contact
Questions about privacy: mimatachi.official@gmail.com