Radio ID vs A4Calc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Radio ID
This utility decodes two-way radio transmissions using industry-standard formats like Motorola MDC-1200, GE STAR, and Kenwood FleetSync. It also supports QuickCall II signaling, making it an essential tool for radio technicians and scanner enthusiasts.
- Decodes Motorola MDC-1200
- Decodes GE STAR
- Decodes Kenwood FleetSync
- Decodes QuickCall II signaling
- Useful for radio technicians
- Helpful for scanner listeners
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Identify two-way radio transmissions made using Motorola MDC-1200, GE STAR, or Kenwood FleetSync radio identifier formats. Also decodes QuickCall II signaling format. (All formats trademarks of their respective owners). Invaluable tool for the two-way radio technician and a helpful utility for the serious scanner listener.
A4Calc
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A4 Small Format Interchangeable Core Calculator (sister app of A2Calc and A3Calc) ---Programmed by a Locksmith, for Locksmiths--- Automatically calculates the pinning chart for A4 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
Screenshots
Verdict
The clearest difference is price: Radio ID at $0.99 against A4Calc's $4.99. Radio ID also leads on chart position (#183 vs unranked). A4Calc's advantage is iOS requirement (12.0 vs 16.0). 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
Radio ID costs $0.99 and A4Calc $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Radio ID ships an update every 7 months, A4Calc every 8 months. The most recent releases landed on October 15, 2026 and September 30, 2026 respectively.
| Parameter | Radio ID | A4Calc |
|---|---|---|
| Price | $0.99 — better | $4.99 |
| Rating | 3.6 (45 ratings) — better | — |
| Positive reviews | 64.3% of reviews | — |
| Number of ratings | 45 — better | — |
| Update frequency | Every 7 months — better | Every 8 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Best chart rank | #183 — better | — |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 16.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Matthew Kaufman | Farren Domenici |
In-app purchases
Radio ID
No in-app purchases
A4Calc
No in-app purchases
