A2Calc vs TrueSecure Admin
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
A2Calc
This app assists locksmiths by automatically calculating pinning charts for A2 SFIC systems. It supports 6 or 7 pin systems and includes features like a randomize function, control finder, and project saving. Projects are encrypted and can be shared via AirPrint or email.
- Automatic pinning chart calculation
- Supports 6 or 7 pin systems
- Randomize chart generation
- Control Finder for lost control keys
- Save up to 16 projects
- Encrypted and passcode-protected projects
- Share projects via AirPrint or email
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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: farren@phoxlocks.com
TrueSecure Admin
Manage and monitor smart locks from your smartphone. Register, configure, and control locks via Bluetooth or remotely over WiFi. Track access history and manage user credentials and settings.
- Lock registration
- WiFi network connection
- Bluetooth and remote control
- User credential management
- Access history logs
- Lock settings configuration
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The TrueSecure app provides control and monitoring of your locks from your smartphone over Bluetooth when within range or WiFi to control remotely. Utilize the TrueSecure app to register, configure, and control your TrueSecure locks. Control all lock functionality through the app, including: - Lock registration - Connect lock to existing WiFi networks - Lock/Unlock over Bluetooth or remotely over WiFi - Manage up to 3000 unique user credentials - View lock access history - Manage lock settings including auto-lock, mute, and lock schedules - Manage and invite additional TrueSecure Device Manager admins
Screenshots
Verdict
The clearest difference is price: TrueSecure Admin at Free against A2Calc's $6.99. TrueSecure Admin also leads on rating (5.0 vs 4.7). A2Calc's advantage is ratings volume (10 vs 1) and iOS requirement (12.0 vs 15.6). On update cadence, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
TrueSecure Admin is free to download; A2Calc costs $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.
TrueSecure Admin holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: A2Calc has 10 ratings behind it against 1, so its average is the more settled of the two.
A2Calc ships an update every 3 months, TrueSecure Admin every 2 months. The most recent releases landed on November 1, 2026 and October 17, 2026 respectively.
| Parameter | A2Calc | TrueSecure Admin |
|---|---|---|
| Price | $6.99 | Free — better |
| Rating | 4.7 (10 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 93.8% of reviews | — |
| Number of ratings | 10 — better | 1 |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 12.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 2 MB | 49 MB |
| Age rating | 4+ | 4+ |
| Developer | Farren Domenici | KoreLock, Inc. |
Customer experience
A2Calc
TrueSecure Admin
In-app purchases
A2Calc
No in-app purchases
TrueSecure Admin
No in-app purchases
