Privacy Policy — Civil Site Calculator

Last updated: 1 August 2026

Developer: Jitendra Saini

App package: com.civilsitecalc.app

Contact: jitendra.saini1189@gmail.com

Civil Site Calculator ("the App," "we," "us") is developed by Jitendra Saini. This policy explains what data the App handles, how it is used, and your choices — in plain language.

1. Summary

The App's core calculators (Concrete, Steel, Brick, Plaster, Paint, Tile, Excavation, RCC Slab, BOQ, Electrical, Converter, and related tools) work fully offline and do not require account creation or login.

We do not operate our own backend servers for user accounts or analytics. Limited data leaves your device only when:

you complete a Pro purchase / restore through Google Play Billing, or
you optionally enable Ask AI with your own Gemini API key and a query needs Google's Gemini service.

2. Data stored on your device

These items stay on your phone/tablet unless you uninstall the App or clear app data (subject to your device backup settings):

Data	Purpose
Calculator inputs and saved history	Let you review past site calculations
Project folders (names, optional client/site text you enter)	Organise saved work
Company profile (company name, phone number, tagline)	Brand PDF / Excel exports you generate
Material rates, language, unit preferences	Personalise estimates and UI
Optional Gemini API key	Stored in on-device secure storage only
Pro entitlement status and purchase verification tokens	Unlock Pro features after Google Play confirms a purchase

Important: Company name and phone number are optional, entered by you, and used only for documents you create on your device. They are not uploaded to our servers (we do not run user-data servers).

3. Information processed off your device

Data	When	Who processes it	Why
Payment / purchase transaction	When you buy or restore Pro (yearly subscription or lifetime unlock)	Google Play Billing	Charge and confirm purchase. We do not see or store your card/UPI details.
Typed Ask AI query text (e.g. "10x12 feet slab M20")	Only if you added your own Gemini API key and the App is online and the offline parser cannot handle the query	Google Gemini API	Understand the query and open the right calculator with filled fields

We do not collect your email address, contacts, photos, camera access, microphone, or precise location. The App does not request those permissions. Runtime permissions used are limited to network access needed for Play Billing and optional Gemini.

4. How data is shared

Google Play Billing — processes payments and subscription status directly.
Google Gemini API — receives typed query text only under the conditions in section 3. If you never add a Gemini key, Ask AI common queries stay on-device and no query text is sent for AI.
We do not sell your data.
We do not use third-party advertising or analytics SDKs in this App build.

When you share a PDF or Excel file (system share sheet), that file goes to the app you choose (e.g. WhatsApp, Drive). That is your action, not collection by us.

5. Your choices

Gemini API key is optional. Add or clear it anytime in Settings → AI Assistant. Without it, offline pattern matching still handles many common site queries.
Clear or edit company profile and rates anytime in Settings.
Manage or cancel a yearly Pro subscription in the Google Play Store.
Uninstalling the App removes on-device App data (your device backup settings may retain a backup copy).
Because we do not maintain user accounts on our servers, there is no cloud profile for us to delete. If that changes in a future update, this policy will be updated.

6. Data security

Billing and optional Gemini requests use encrypted HTTPS.
Your Gemini API key is stored securely on your device only and is never transmitted to servers we operate.
Gemini usage (if any) is billed by Google under your Google AI Studio plan after free-tier limits.

7. Children's privacy

Civil Site Calculator is designed for civil engineers, contractors, and construction professionals. It is not directed at children under 13.

8. Changes to this policy

We may update this policy as the App evolves. Material changes will be reflected here with an updated "Last updated" date.

9. Contact us

For questions about this policy or your data, contact:

Jitendra Saini
Email: jitendra.saini1189@gmail.com