# Lens Cap vs Calculator Sci Unit Converter

The clearest difference is price: Lens Cap at Free against Calculator Sci Unit Converter's $1.99. Calculator Sci Unit Converter's advantage is in-app purchases (none vs 1) and update cadence (monthly vs every 33 months). On rating, review sentiment, ratings volume and ads there is nothing between them.

Lens Cap is free to download; Calculator Sci Unit Converter costs $1.99 up front. Lens Cap sells 1 one-off in-app purchase. Calculator Sci Unit Converter asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.0 for Lens Cap against 4.0 for Calculator Sci Unit Converter. Both are backed by a comparable volume of ratings — 4 and 2 respectively. Written reviews split almost evenly too, at 67% and 67% positive.

Lens Cap ships an update every 33 months, Calculator Sci Unit Converter monthly. The most recent releases landed on October 18, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Lens Cap | Calculator Sci Unit Converter |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | [4.0 (4 ratings)](https://appshunter.io/ios/app/lens-cap-lock-screen-blocker/id6447544320/reviews) | [4.0 (2 ratings)](https://appshunter.io/ios/app/calculator-sci-unit-converter/id6772422667/reviews) |
| Number of ratings | **4** | 2 |
| Positive reviews | 66.7% of reviews | 66.7% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 33 months | **Monthly** |
| Monetization | Paid | Paid |
| Size | 44 MB | 25 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Panadda Sheppard](https://appshunter.io/developer/1137017055) | [Xiamen City Fanyou Network Technology Co., Ltd.](https://appshunter.io/developer/1842524161) |

## What reviewers say

### Lens Cap

[App page](https://appshunter.io/ios/app/lens-cap-lock-screen-blocker/id6447544320)

Prevent unauthorized camera use on your iPhone, both on the lock screen and when unlocked. This utility leverages built-in device controls to disable the camera app, offering peace of mind for parents and educators.

**Highlights:** Disable camera on lock screen, Disable camera when unlocked, Uses iPhone's Family Controls, Shields default Camera app, Ideal for teachers and parents

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Schedule Unlock | $1.99 | one-time |


### Calculator Sci Unit Converter

[App page](https://appshunter.io/ios/app/calculator-sci-unit-converter/id6772422667)

This app offers a robust calculator with both standard and scientific functions. It includes a unit converter for various measurements and currency, plus helpful shortcuts for percentages, taxes, and tips. All calculations are saved locally for easy access.

**Highlights:** Standard and scientific calculator modes, Unit conversion for length, weight, temperature, currency, Full calculation history log, Percentage, tax, and tip calculation shortcuts, Offline functionality, Optimized for phone and tablet

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Lens Cap free?

Lens Cap is free to download, with in-app purchases available.

### Is Calculator Sci Unit Converter free?

Calculator Sci Unit Converter costs $1.99, with no in-app purchases.

### Which has better reviews, Lens Cap or Calculator Sci Unit Converter?

Lens Cap and Calculator Sci Unit Converter are both rated 4.0 out of 5 on the App Store, from 4 and 2 ratings respectively.

### Do Lens Cap or Calculator Sci Unit Converter have ads?

Neither Lens Cap nor Calculator Sci Unit Converter shows ads.

### Which is updated more often, Lens Cap or Calculator Sci Unit Converter?

Lens Cap ships an update every 33 months, and Calculator Sci Unit Converter monthly. Most recently, Lens Cap was updated on October 18, 2026 and Calculator Sci Unit Converter on October 11, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*