A2Calc 4+

SFIC Calculator

Farren Domenici

Designed for iPhone

    • 4.8 • 9 Ratings
    • $5.99

iPhone Screenshots


A2 Small Format Interchangeable Core Calculator

---Programmed by a Locksmith, for Locksmiths---

Automatically calculates the pinning chart for A2 SFIC. Built for 6 or 7 pin systems, however, less can be achieved by using a decimal to erase a chamber.

Minimum of a control and master key are required to make a chart. Additional change key available for all devices; 2 change keys available for 4" (and above) screen devices.

Randomize function will generate completely random charts each time it is triggered.

"Lock/Unlock" toggle disables/enables all inputs and functions to prevent unwanted/lost changes.

Control Finder is an added bonus by reverse engineering a core to determine the control key's bitting. This is perfect when needing to remove multiple cores in a building when the control key has been lost. There are two methods for achieving the control key: 1. using the master, control, and bottom pins, or 2. using only the top/driver pins.

Up to 16 different projects can be saved at any one given time.

All projects are encrypted and protected with a passcode.

AirPrint or Email projects with a single tap.

Compatibility: iPhone / iPod touch on iOS 8.0 or later and iPad on iOS 12.0 or later.

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

What’s New

Version 1.5.1

---Note: This update requires a minimum version of iOS 12.0---

-Under the hood service to maintain a healthy running app

Ratings and Reviews

4.8 out of 5
9 Ratings

9 Ratings

YouAreAllNewJackBitches ,

Awesome app

This app pays for itself over and over and over. I’ve rekeyed 4 casinos and a airport using this handy app cuts my bitting generation times in half. The control finder is an added bonus in tight situations as well. Thanks Phil!

L0CK MaN ,

No more annoying cut sheets

Who does math by hand anymore? This app saves you from having to ever fill out a bitting chart again. Quick and easy!

Someone who needs an app ,

Great tool

I have about all of Phil's apps they are great time savers, I also enjoy the option to email my results.

App Privacy

The developer, Farren Domenici, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

More By This Developer


You Might Also Like