Privacy Policy for Kalcer

Last updated: March 28, 2026

CV. KELOUD ROKAN HULU (“we”, “our”, or “us”) built the Kalcer app as a Freemium app. This page informs you of our policies regarding the collection, use, and disclosure of information when you use our app.

Information Collection and Use

Data Stored Locally

Kalcer stores the following data only on your device (locally):

• Calculator expressions and history
• Item names, prices, descriptions, and colors
• Receipt settings (store name, address, phone, logo)
• Saved printer preferences (Bluetooth device name and address)
• App preferences (language, currency, user tier)

This data is never transmitted to our servers. We do not have servers that collect your personal data.

Third-Party Services

Kalcer uses the following third-party services that may collect information:

Google AdMob

• Displays banner and interstitial advertisements to free-tier users
• AdMob may collect device identifiers, IP address, and usage data for ad personalization
• Google AdMob Privacy Policy

Google Play Billing

• Processes in-app purchases (Lifetime plan)
• Purchase transactions are handled entirely by Google Play
• Google Play Privacy Policy

Google Play In-App Review

• May prompt users to rate the app via Google Play’s review system
• No personal data is collected by us through this feature

Bluetooth

• Kalcer uses Bluetooth to connect to thermal printers for receipt printing
• Bluetooth permissions are only used for printer communication
• We do not collect, store, or transmit any Bluetooth data beyond the saved printer name and MAC address stored locally on your device

Data Sharing

We do not sell, trade, or share your personal information with third parties. The only data shared with third parties is through Google AdMob for advertising purposes, as described above.

Data Retention

All app data is stored locally on your device. You can clear all data by:

• Clearing the app data in your device Settings
• Uninstalling the app