# Master Key Manager > Professional Master Key Systems & rekeying tools for locksmiths. Cloud-based. Canonical page: [https://chrome-stats.com/d/com.jerrydionisio.masterkeybuilder](https://chrome-stats.com/d/com.jerrydionisio.masterkeybuilder) ## Overview - **ID:** `com.jerrydionisio.masterkeybuilder` - **Platform:** Android - **Type:** Android app - **Status:** Removed - **Publisher:** Master Key Manager - **Category:** TOOLS - **Downloads:** 73 - **Version:** 12.23 - **Last updated:** 2026-02-12 - **First published:** 2026-01-12 - **Publisher country:** US - **Size:** 55 MB - **Data as of:** 2026-06-22 - **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.jerrydionisio.masterkeybuilder) - **Website:** [https://masterkeymanager.com](https://masterkeymanager.com/) - **Privacy policy:** [https://masterkeymanager.com/privacy/](https://masterkeymanager.com/privacy/) ## Description Master Key Manager is the professional locksmith's digital toolkit - built by a locksmith with 40 years of experience.

MASTER KEY SYSTEMS MADE SIMPLE
Create complete master key systems in minutes, not hours. Our algorithm automatically generates all valid change keys while eliminating MACS violations. Support for 5, 6, and 7-pin systems across 10 major manufacturers: Schlage, Kwikset, Corbin Russwin, Sargent, Yale, Best, Arrow, Weiser, Dexter, and Weslock.

DIGITAL WORKBOOK

Say goodbye to paper bitting charts. Your entire master key system lives in the cloud - accessible from anywhere. Track which keys are available, in use, or used. Assign keys to doors with blind codes for customer security.

YOUR DATA, YOUR VAULT

Your master key systems are stored in your own private vault. Only you and your employees have access - no one else. Not even us.

CONTROL KEY RECOVERY

Lost a control key? Recover it in seconds. Supports Best A2 SFIC cores, Corbin Russwin System 70 LFIC cores, and Sargent LFIC cores.

PINNING CALCULATOR

Calculate pin stacks instantly for any cylinder. Plus, get the correct pinning for SFIC and LFIC cores in seconds - with exact pin sizes. No more manual math or looking up cut depths.

QR CODE TRACKING

Two types of QR codes keep you organized:

Door QR Codes - Permanent. Stays with that building and door for life. Scan it anytime to see the current key assignment, history, and door details.

Key QR Codes - Tied to a specific change key. When a door gets rekeyed, the old key's QR code retires along with the old change and blind code. The new key gets a fresh QR code.

Perfect for property management and building walks. Know exactly which key goes where without flipping through paperwork.

PROFESSIONAL REPORTS

Generate PDF reports for your customers. Door schedules, key lists, and system summaries ready to print or email.

CLOUD-BASED & SECURE

Your data syncs across devices in real-time. Device management prevents unauthorized access.

SUPPORTED MANUFACTURERS

Schlage, Kwikset, Corbin Russwin, Sargent, Yale, Best, Arrow, Weiser, Dexter, Weslock (plus Baldwin, Emtek, and Defiant which share pinning specs) ## Permissions and access ### Permissions - `android.permission.ACCESS_ADSERVICES_AD_ID` - `android.permission.ACCESS_ADSERVICES_ATTRIBUTION` - `android.permission.ACCESS_NETWORK_STATE` - `android.permission.CAMERA` - `android.permission.INTERNET` - `android.permission.POST_NOTIFICATIONS` - `android.permission.WAKE_LOCK` - `com.android.vending.BILLING` - `com.android.vending.CHECK_LICENSE` - `com.google.android.c2dm.permission.RECEIVE` - `com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE` - `com.google.android.gms.permission.AD_ID` - `com.google.android.providers.gsf.permission.READ_GSERVICES` - `com.jerrydionisio.masterkeybuilder.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION` ## Similar extensions and apps - [Smart MasterKey](https://chrome-stats.com/d/com.spark.blelocking) — 6,246 users - [KeyMasterPro - Database](https://chrome-stats.com/d/com.kmpmobile) — 220 users - [KeyMaster](https://chrome-stats.com/d/co.com.rodaheva.KeyMaster) — 433 users - [MASTER KEY USER](https://chrome-stats.com/d/com.masterkey) — 112 users - [MasterKey](https://chrome-stats.com/d/nl.masterkey.app) — 4,939 users - [KleverKey Classic](https://chrome-stats.com/d/tech.swissprime.mylock) — 6,122 users - [MASTER KEY WORKER](https://chrome-stats.com/d/com.masterkey.workers) — 51 users - [MASTER KEY PROVIDER](https://chrome-stats.com/d/com.masterkey.providers) — 107 users - [Key logic pro locksmith](https://chrome-stats.com/d/com.keylogicpro.business) — 206 users - [KeyCare Central](https://chrome-stats.com/d/com.keycare.keycare) — 3,765 users - [ProMaster Master-Keying Mobile](https://chrome-stats.com/d/com.whsoftware.promastermobile) — 2,009 users, 1.80 / 5 - [KeyMaster](https://chrome-stats.com/d/com.keymaster) — 1 users --- Source: [Chrome-Stats](https://chrome-stats.com/d/com.jerrydionisio.masterkeybuilder)