Last updated: 2 November 2026
App: Pipewise (Android, package com.pipewise.pipewise)
Developer: Sterin Saji, United Kingdom
Contact: hello@sterin.dev
Pipewise is a paid piping reference and calculator app. This policy explains what information the app handles and why. In short: Pipewise has no accounts, no ads, and does not sell or share your personal information.
Pipewise keeps the following on your phone so it remembers how you work. None of it is sent to the developer.
This data stays in the app’s private storage. You can remove it at any time by deleting saved items in the app, clearing the app’s storage in Android Settings, or uninstalling the app.
To understand which tables and calculators are useful and what to improve, Pipewise may use Google Analytics for Firebase. When it is active, it records:
It does not record your name, email address, precise location, or the numbers you enter into calculators. Analytics data is processed by Google under the Google Privacy Policy and Firebase data-processing terms, and is kept for the retention period set in Google Analytics (no longer than 14 months). The app does not use the data for advertising.
Pipewise is bought through Google Play. Payment is handled entirely by Google; the developer never sees your card or payment details. Google may share limited order information (such as an order number and country) with the developer for accounting and refunds. See the Google Play Terms of Service and the Google Privacy Policy.
The “Email” and “Report a problem” buttons open your own email app with a message already filled in. Depending on where you press the button, the message may include the calculator or table name, the values you entered, the app version, your device platform and your unit system. Nothing is sent until you choose to send it, and you can edit or delete anything first.
If you email hello@sterin.dev, your email address and message are used only to reply to you and to fix or improve the app. They are not shared, and are deleted when no longer needed.
When you tap Share, Pipewise passes a text summary of the calculation to the app you pick (for example WhatsApp or email). What happens next is controlled by that app.
Pipewise requests only Internet access, which is used for the optional usage statistics above. It does not ask for your location, contacts, camera, microphone, photos or files.
Pipewise contains no advertising and no advertising SDKs.
Pipewise is a professional tool for engineers, pipefitters and welders. It is not directed at children under 13 (16 in the UK and EEA), and the developer does not knowingly collect information from children.
You can ask to access, correct or delete personal information the developer holds about you, object to its use, or complain to a data-protection authority. In the UK that is the Information Commissioner’s Office (ICO). Because Pipewise has no accounts, the developer normally holds nothing about you except emails you have sent. To make a request, email hello@sterin.dev.
The legal basis for processing is the developer’s legitimate interest in running and improving the app, and, for emails, replying to you.
On-device data is kept in the app’s private storage, protected by Android. Data sent to Google is encrypted in transit.
If this policy changes, the new version will be published here with a new “Last updated” date. Significant changes will be mentioned in the app’s release notes.
Sterin Saji, United Kingdom hello@sterin.dev
Pipewise is a field reference. It is not a substitute for the published ASME/MSS/ASTM standards, your project specification or a qualified engineer. Always check critical dimensions before you cut or fabricate.