# Master It

> On-The-Fly Master Keying App

Canonical page: [https://chrome-stats.com/d/id645920825](https://chrome-stats.com/d/id645920825)

## Overview

- **ID:** `id645920825`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Farren Domenici
- **Category:** Utilities
- **Rating:** 3.70 / 5 (18 ratings)
- **Version:** 1.7.1
- **Last updated:** 2026-03-15
- **First published:** 2013-05-24
- **Size:** 6.20 MB
- **Data as of:** 2026-09-22
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/master-it/id645920825)
- **Website:** [http://www.locksmithapps.com](http://www.locksmithapps.com/)
- **Privacy policy:** [http://www.locksmithapps.com/info.html#priv](http://www.locksmithapps.com/info.html#priv)

## Description

***FEATURED IN KEYNOTES MAGAZINE***

Create and print master key systems in an instant with Master It.

Master It is perfect for small or on-the-fly systems. Create a master key matrix immediately with zero math and zero worries of cross-keying. Either enter in your own TMK or tap Randomize to create a complete master key system containing a single TMK, a single sub master, and up to 64 change keys. Each output delivers a fixed sub master and set of change keys.

Master It is built to create a system immediately to print and keep in your records at your shop. It is capable of saving and reloading one project at a time. The goal with Master It is to create and AirPrint a system in an instant. If on the road when printing isn't available, email and save features are secondary backups prior to printing. Email is also ideal when a printer is not AirPrint compatible.

Currently supports:

Kwikset .023"
Corbin Russwin .028"
Weiser / Falcon .018"
Ilco-Unican .018"
Schlage .015"
Arrow .014"
Sargent .0125" & .020"
Corbin .014"

Obeys MACS rules for each selected system.

AirPrint, Email, or Save any system created.

Create 5 or 6 pin systems.

Randomize feature to always generate a completely random TMK every time. Use the two filters to restrict the TMK to only shallow depths, or to always include the shallowest and deepest cuts.

Tap anywhere on the matrix to select or deselect a bitting for the key chart.

Shake your iDevice to lock the primary functions on the main screen. This is to prevent unwanted changes (i.e. accidentally tapping Reset). To unlock, just shake again.

All change keys can be individually identified.

Use the Project Name / Keyway box for temporary saving information. The actual printout will allow you to write in the business name, personal name, address, keyway, and phone number conveniently. After printing, the system can be continued manually on paper.

Additionally, you can tap on each change key to display the pinning.

Compatibility: All iPhone, iPad, iPod Touch types and generations with a minimum iOS version of 12.0

Found a bug? Something not working? Have a suggestion? Feel free to contact me via email: farren@phoxlocks.com

## Rankings

- #283,334 — Overall

## Review summary

Overall, users find Master It to be a time-saving, easy-to-use tool for creating master key charts on the job. It shines for on-site use, quick chart generation, and straightforward output via save, email, or print. However, recurring drawbacks include a limited save/load workflow (only the last project loads), no ability to manually enter or customize existing key cuts, and functionality gaps for full master-to-pin calculations or higher-level stages. A lack of documentation is also noted, with requests for tutorials.

### Pros

- Saves time by quickly generating master key charts
- Easy to use and well organized
- Output options to save, email, and print results
- Flexible with many key systems and pin configurations
- Handy for on-site work (works well on the road)

### Cons

- Save/Load feature only loads the last project; difficult to manage multiple saved jobs
- Cannot manually enter existing key cuts or customize specific numbers
- Does not calculate master-to-individual pin sets or higher-level master schemes (stages 3/4)
- Limited documentation or tutorials to explain usage and features

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Source: [Chrome-Stats](https://chrome-stats.com/d/id645920825)