Privacy
Last updated: September 8, 2026 · Model Teaching Apps
This app follows the Model Teaching Apps Privacy Notice. This page covers only what is specific to PEMDAS Practice.
What PEMDAS Practice saves on your device
None of it is sent anywhere, with one exception: when you generate a worksheet PDF (see below).
| Item | What it holds | How long it lasts |
|---|---|---|
| Device identifier | A random ID stamped on anything you save, so your saved items stay grouped. Never sent anywhere. | Until you clear it |
| Preferences | Your theme, sound, and clear-on-close choices. | Until you clear it |
| Saved builds and templates | Practice sessions and worksheet configurations you have saved, plus any title you typed for them. | Until you clear it (most recent 30 kept) |
| Active session | The practice set you are currently working through, and whether each answer was correct. | Until you close this browser tab |
| Analytics opt-out flag | Set only if you have turned analytics off in this browser. | Until you turn it back on |
What PEMDAS Practice sends to our server
When you generate a worksheet PDF, we receive the settings you chose and, if you typed one, a title of up to 120 characters. We use this only to build the PDF and send it back. We do not store it or log it.
Please do not type a student’s name or any other personal information into the title field.
Analytics
We use Fathom Analytics to count visits and see which features get used. Fathom sets no cookies, reports at the country level only, and briefly sees your IP address before discarding it within 24 hours. On September 8, 2026, we removed Google Analytics and Vercel Web Analytics from every Model Teaching app. Fathom is now the only analytics tool on this site. Read more, or turn analytics off in this browser, on the Model Teaching Apps Privacy Notice.
Children’s privacy
PEMDAS Practice is made for children, including children under 13. We do not collect personal information from your child: no name, no email address, no login, no photo. The only automatic data is described above and in the Model Teaching Apps Privacy Notice.
Clearing your data
Open Settings in PEMDAS Practice to clear what this app has saved on your device. The Model Teaching Apps Privacy Notice also has a button that clears data for every Model Teaching app at once, including this one, because every app shares one browser origin.
Third-party links
This app may link to external sites, such as modelteaching.com. Those sites have their own privacy policies. We are not responsible for the content or privacy practices of linked sites.
Changes to this policy
If this page changes materially, we will update the date at the top.
Contact
Questions about privacy? Reach us through the Contact page.