ZAGG Keyboard vs SharpKnife Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ZAGG Keyboard
This application updates the firmware for Bluetooth keyboards paired with Apple devices. It automatically checks if an update is available and performs the necessary firmware maintenance.
- Bluetooth keyboard firmware updates
- Automatic update detection
- Maintains keyboard performance
- Compatible with Apple devices
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ZAGG Keyboard APP, this APP will help maintain the keyboards firmware in the field by update the Bluetooth keyboards firmware if paired to the Apple Device. When running the APP, the program will automatically indicate if the keyboard needs an update or not.
SharpKnife Pro
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SharpKnife is a utility that lets you define knife sharpening systems, creating a list of parameters that can be set for each sharpening session. You then add knife records, which support pictures of your knife. Once you have at least one knife and one sharpening system, you can begin keep track of when and how you sharpened each knife. This version allows backing up your data to iCloud, plus data export in JSON and CSV as well as an improved UI.
Screenshots
Verdict
The clearest difference is price: ZAGG Keyboard at Free against SharpKnife Pro's $0.99. ZAGG Keyboard also leads on device support (4 vs 2) and iOS requirement (14.0 vs 17.5). SharpKnife Pro's advantage is update cadence (daily vs every 5 weeks). On ads and in-app purchases 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
ZAGG Keyboard is free to download; SharpKnife Pro costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
ZAGG Keyboard ships an update every 5 weeks, SharpKnife Pro daily. The most recent releases landed on July 14, 2026 and December 18, 2025 respectively.
| Parameter | ZAGG Keyboard | SharpKnife Pro |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 1.9 (40 ratings) — better | — |
| Positive reviews | 22.0% of reviews | — |
| Number of ratings | 40 — better | — |
| Update frequency | Every 5 weeks | Daily — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad |
| Requires iOS | 14.0 — better | 17.5 |
| Further details — not scored | ||
| Size | 5 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | 成 林 | ANNULET CONSULTING, LLC |
In-app purchases
ZAGG Keyboard
No in-app purchases
SharpKnife Pro
No in-app purchases
Questions
Is ZAGG Keyboard free?
Is SharpKnife Pro free?
Do ZAGG Keyboard or SharpKnife Pro have ads?
Which is updated more often, ZAGG Keyboard or SharpKnife Pro?
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