Privacy Policy
Last Updated: August 1, 2026 • Evostackr Data Commitment
100% Offline-First & Private
SMS Campaign Manager (developed by Evostackr) does NOT transmit your contact books, message drafts, phone numbers, or campaign logs to any cloud server, third-party analytics company, or advertising network. Everything executes strictly on your Android handset.
1. Zero Telemetry & On-Device Data Storage
All message templates, contact groups, recipient records, and dispatch statuses are persisted strictly on your device using encrypted Room SQLite databases (with optional SQLCipher AES-256 encryption). Evostackr does not own, run, or connect to remote logging servers. Your business data belongs exclusively to you.
2. Required Permissions Rationale
To perform its core operations, SMS Campaign Manager requests explicit runtime permissions on Android:
android.permission.SEND_SMS— Used solely to transmit outbound SMS messages through the carrier SIM card you have designated.android.permission.READ_PHONE_STATE— Used to detect active Dual-SIM subscriptions (Slot 1 vs Slot 2), carrier names, and roaming status.android.permission.POST_NOTIFICATIONS— Displays persistent ongoing campaign dispatch progress and completion notifications on Android 13+.android.permission.FOREGROUND_SERVICE— Ensures that high-volume message queues complete reliably without being killed by the Android OS battery manager.android.permission.READ_CONTACTS— Optional permission used exclusively when you choose to import recipients directly from your device's address book.android.permission.RECEIVE_BOOT_COMPLETED— Resumes pending or scheduled campaigns if your device undergoes an unexpected system reboot.
3. Encrypted Backups & Security
Any backups exported from the app can be protected using industry-standard AES-256 encryption. Backup archives are stored in the local file directory of your choice. Evostackr never receives, stores, or accesses your encryption keys or your backup archives.
4. User Data Control & Total Deletion
You maintain full sovereignty over your information. You can purge all stored recipient lists, templates, and delivery logs at any time from Settings → Data & Privacy → Clear Local Database. Completely uninstalling the app permanently erases all internal application databases from your handset.
5. Third-Party Advertisers & Analytics
SMS Campaign Manager contains no third-party ad SDKs, telemetry beacons, Google Analytics, or marketing trackers.
6. Contact Developer Team
For any inquiries regarding data protection or compliance, email our team directly at support@evostackr.in or visit our Contact Support page.