PourMath — Privacy Policy

Effective date: 21 October 2026

PourMath is made by Seif Aldeen Mahmoud Tawfiq Albataineh, trading as Halfstep. Contact: seif.appslab@gmail.com

This policy explains exactly what the app does with information. It is written to match what the code actually does. If the two ever disagree, the code is a bug and we fix it.

The short version

• Everything you type stays on your phone. Mold sizes, your resins, prices, saved pours and timers are stored only in the app's own storage on your device.
• There is no account. No sign-up, no email, no password, no profile.
• The calculator and the 3D view work offline. They send nothing anywhere.
• Ads are served by Google AdMob, which collects its own data. That part is described below and is the only data collection connected to the app.

1. What stays on your device

Everything you create in PourMath is stored locally, in the app's private storage:

• the shape and measurements on the calculator
• the resins you add: name, mix ratio, price, demold and cure times
• the pours you save, and the cure timer you start
• your settings: units, extra for waste, default coat thickness

None of this is transmitted to us or to anyone else. Uninstalling the app deletes all of it.

2. The 3D view

The 3D picture of your mold is drawn on your phone by a small page bundled inside the app (three.js). It loads nothing from the internet and sends nothing.

3. Notifications

When you start a cure timer, the app schedules two notifications on your phone: one when the pour can be demolded and one when it is fully cured. They are created and delivered by your phone's own system; nothing is sent to a server. On Android 13 and newer the app asks for permission first, and works fully without it.

4. Advertising (Google AdMob)

The free version shows ads supplied by Google AdMob: a banner at the bottom of the screens, an ad when the app starts, and an optional rewarded ad you can choose to watch to save more than three pours. Google acts as an independent controller for this and collects and shares the following, per Google's own published disclosure:

Google's policy: https://policies.google.com/technologies/partner-sites

In the European Economic Area, the United Kingdom and Switzerland, a consent screen appears before the first ad and your choice is respected; you can change it later from Settings → Privacy choices (ads).

5. Purchases

Remove ads is a one-time purchase through Google Play Billing. Google handles the payment; we never see your card, address or any payment detail. The app only receives Google's answer that the purchase exists and stores a flag on your phone. With it, no ad is requested at all.

6. Analytics

There is none. The app contains no analytics SDK, no crash-reporting SDK and no tracking of how you use it.

7. Children

PourMath is not directed at children and is rated for a general audience. We do not knowingly collect anything from children; in fact we do not collect anything about any identifiable person.

8. Your control over your data

• Delete a saved pour: swipe it left in Saved.
• Delete a resin: tap the bin next to it in My resins.
• Stop a timer: Cure timer → Stop timer also cancels its notifications.
• Erase everything: Settings → Erase everything deletes saved pours, added resins and the timer.
• Delete everything: uninstalling the app removes all of it from the device.
• Because we hold nothing that identifies you, there is nothing on our side to delete, correct or hand over. If you believe otherwise, write to the address at the top and we will answer.

9. Changes

If this policy changes, the effective date at the top changes with it, and the updated version appears at the same address before the change reaches the app.

10. Contact

Seif Aldeen Mahmoud Tawfiq Albataineh, trading as Halfstep — seif.appslab@gmail.com