A3Calc vs Panel Tracker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
A3Calc
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A3 Small Format Interchangeable Core Calculator (sister app of A2Calc and A4Calc) ---Programmed by a Locksmith, for Locksmiths--- Automatically calculates the pinning chart for A3 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 16:9 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 when stored on your device. All projects can be exported via AirPrint and Email. 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
Panel Tracker
Organize your electrical panel by labeling breakers with custom notes. Get an instant overview and share your panel layout easily. Data is stored locally for privacy, with optional syncing.
- Custom breaker labels
- Detailed notes for each breaker
- Instant panel overview
- Customizable to panel size
- Effortless sharing
- Secure local storage
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Easily label your electrical panel's breakers: Organize your panel by assigning custom labels to each breaker for quick identification. Add detailed notes: Keep track of important information for each breaker, like appliance connections or maintenance history. Instant overview of your panel: See all breaker labels and notes at a glance with a clear and concise layout. Tailor your panel to fit your needs: Fully customizable to match the exact number of breakers in your panel. Effortless sharing: Share your panel with others, whether it's with family members, electricians, or tenants. Secure, local storage: All your panel data stays stored locally by default for maximum privacy, with the option to sync for easy backup and sharing.
Screenshots
Verdict
The clearest difference is price: Panel Tracker at Free against A3Calc's $1.99. A3Calc's advantage is iOS requirement (12.0 vs 15.1). 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
Panel Tracker is free to download; A3Calc costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
A3Calc ships an update every 18 months, Panel Tracker every 15 months. The most recent releases landed on October 16, 2026 and October 6, 2026 respectively.
| Parameter | A3Calc | Panel Tracker |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | — | 1.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 18 months | Every 15 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 12.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 2 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | Farren Domenici | Rooted Software |
In-app purchases
A3Calc
No in-app purchases
Panel Tracker
No in-app purchases









