LensPro vs SharpKnife Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
LensPro
This utility app assists projectionists with lens calculations for various projector brands. It maintains an updated database of lens information accessible via the internet.
- Lens calculations
- Supports Barco, Christie, Panasonic, Epson, Benq, Mitsubishi, Optoma, Sony
- Online database updates
- Ideal for projectionists
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LensPro is the ideal companion of every projectionist. Lenspro allows the calculations of lenses: Barco - Christie - Panasonic, Digital Projection, Epson, Benq, Mitsubishi,Optoma,Sony. updating the database via the internet
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 update cadence: SharpKnife Pro at daily against LensPro's every 16 months. SharpKnife Pro also leads on price ($0.99 vs $5.99). LensPro's advantage is iOS requirement (13.0 vs 17.5). On 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
LensPro costs $5.99 and SharpKnife Pro $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
LensPro ships an update every 16 months, SharpKnife Pro daily. The most recent releases landed on September 18, 2026 and December 18, 2025 respectively.
| Parameter | LensPro | SharpKnife Pro |
|---|---|---|
| Price | $5.99 | $0.99 — better |
| Rating | 4.4 (21 ratings) — better | — |
| Positive reviews | 75.0% of reviews | — |
| Number of ratings | 21 — better | — |
| Update frequency | Every 16 months | Daily — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 17.5 |
| Further details — not scored | ||
| Size | 109 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | piXap | ANNULET CONSULTING, LLC |
In-app purchases
LensPro
No in-app purchases
SharpKnife Pro
No in-app purchases
