1. Overview
PercentKit is a calculator utility published by Kaiser Works. This policy explains how PercentKit handles information when you use the app.
2. Data stored on the device
PercentKit stores certain app data locally on your device so the app can provide its core functionality. This may include:
- calculation history
- favorites
- theme preference
- local calculator usage counts and ranking
- provisional local PercentKit Pro entitlement cache
This information is used only to provide app functionality on your device.
3. Calculator inputs and results
Calculator inputs and results are not transmitted to Kaiser Works and are not uploaded to a Kaiser Works server. Calculation history remains local to your device unless you explicitly share information through another app or service.
4. Google Mobile Ads
Free users may see ads provided by Google Mobile Ads, also known as AdMob. Google and its partners may collect or process information such as device information, advertising identifiers where permitted, IP address or network information, and ad interaction or performance information.
Google’s handling of information is governed by Google’s own policies and controls.
5. Google Play Billing
PercentKit Pro is a one-time purchase processed by Google Play. Kaiser Works does not receive or store your payment card details. Google Play may process purchase and account information according to Google’s policies.
PercentKit may query Google Play to restore or verify ownership of PercentKit Pro.
6. Support emails
The Report a problem and Send feedback options open your email app. You review and send the message explicitly before anything is sent to Kaiser Works.
Problem reports may include basic technical diagnostics such as:
- app version
- Android version
- device manufacturer and model
- current screen
Calculation values, results, and history are not automatically included.
7. Data retention
Local app data may remain on your device until you clear the app’s data or uninstall the app. Google Play purchase ownership may be restorable after reinstall.
Kaiser Works retains only information you explicitly send through email, subject to normal email retention.
8. Children
PercentKit is intended for users age 18 and older and is not designed for children.
9. Security
Kaiser Works uses reasonable care when handling information users explicitly send for support. No method of electronic storage or transmission is perfectly secure, so absolute security cannot be guaranteed.
10. Third-party services
PercentKit may involve the following third-party services:
- Google Play
- Google Mobile Ads / AdMob
- the email provider chosen by the user
11. Changes to this policy
This policy may be updated from time to time. When it changes, the effective date above will be updated.
12. Contact
Questions about this policy can be sent to kaiser.works.2026@gmail.com.