A4Calc vs Keyboard Extension
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
A4Calc
Read full descriptionHide full description
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
Keyboard Extension
Manage text snippets and images with a custom keyboard extension. Save time by quickly accessing and organizing your frequently used content across all applications. Features include encryption and FaceID/TouchID protection for sensitive data.
- Custom keyboard extension
- Text and image snippet management
- Tag-based organization
- Encryption for sensitive data
- FaceID/TouchID protection
- Universal app compatibility
Read full descriptionHide full description
Introducing SnipKey, the simple and modern solution for managing text snippets and images, complete with a sleek custom keyboard extension. SnipKey seamlessly integrates into your digital workflow, revolutionizing how you interact with content across all your apps—from personal reminders to sensitive work information. SnipKey is a Keyboard Extension. Why SnipKey Stands Out? - Simple & Modern Design Intuitive interface that's a joy to use Clean, minimalist aesthetics for distraction-free productivity - Effortless Management Easily create, store, and categorize snippets and images Custom tags for quick retrieval and organization - Smart Keyboard Extension Access snippets instantly in any app Seamlessly switch to SnipKey without leaving your current task - Advanced Filtering Find exactly what you need with tag-based filtering Categorize snippets by type (Personal, Work, Banking) or custom tags - Enhanced Security Protect sensitive data with robust encryption Secure snippets with FaceID or TouchID for privacy - Universal Compatibility Works flawlessly across your favorite apps Access snippets wherever you are, whenever you need them SnipKey isn't just a snippet manager—it's a comprehensive, modern solution designed to enhance your productivity and simplify your digital life. With its sleek interface and powerful features, SnipKey transforms how you handle information. Learn more at https://snipkey.jrtv.online Terms of Service: https://snipkey.jrtv.online/terms-conditions Privacy Policy: https://snipkey.jrtv.online/privacy-policy EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is price: Keyboard Extension at Free against A4Calc's $4.99. Keyboard Extension also leads on update cadence (monthly vs every 8 months). A4Calc's advantage is in-app purchases (none vs 6) and iOS requirement (12.0 vs 26.0). On ads 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
Keyboard Extension is free to download; A4Calc costs $4.99 up front. Keyboard Extension sells 6 one-off in-app purchases. A4Calc asks for nothing beyond the download.
A4Calc ships an update every 8 months, Keyboard Extension monthly. The most recent releases landed on October 26, 2026 and October 28, 2026 respectively.
| Parameter | A4Calc | Keyboard Extension |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | — | 4.9 (31 ratings) — better |
| Positive reviews | — | 91.7% of reviews |
| Number of ratings | — | 31 — better |
| Update frequency | Every 8 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 12.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 2 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | Farren Domenici | Jonathan Taveras |
In-app purchases
A4Calc
No in-app purchases
Keyboard Extension
- Candy Tip$1.99
- Juice Tip$4.99
- Juice Tip$9.99
Show 3 moreShow fewer
- Ramen Tip$14.99
- Burget Tip$29.99
- Caviar Tip$99.99
Questions
Is A4Calc free?
Is Keyboard Extension free?
Do A4Calc or Keyboard Extension have ads?
Which is updated more often, A4Calc or Keyboard Extension?
Other comparisons















