# Secure vs kelvin light scale

The clearest difference is in-app purchases: Secure at none against kelvin light scale's 4. kelvin light scale's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. kelvin light scale sells 4 in-app purchases, starting at $1.49 per 7 days. Secure asks for nothing beyond the download.

## The numbers

| Metric | Secure | kelvin light scale |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (1 ratings)](https://appshunter.io/ios/app/kelvin-light-scale/id6761167793/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | — |
| Monetization | — | Free with in-app purchases |
| Size | 10 MB | 17 MB |
| Requires iOS | **16.6** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Christian Scheub](https://appshunter.io/developer/1722270501) | [Asaru Labs LTD](https://appshunter.io/developer/1810982779) |

## What reviewers say

### Secure

[App page](https://appshunter.io/ios/app/secure-qr/id6739471935)

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

**In-app purchases:** none


### kelvin light scale

[App page](https://appshunter.io/ios/app/kelvin-light-scale/id6761167793)

This tool transforms your iPhone into a light meter, lux meter, and color temperature analyzer. It provides instant readings for color temperature, light intensity, and exposure values, offering real-time guidance for photography, videography, and lighting setups.

**Highlights:** Instant color temperature (Kelvin) measurement, Light intensity (Lux) readings, Exposure value (EV) analysis, Real-time white balance and tint guidance, Optional advanced metrics (Tint/Duv, CIE coordinates), Calibration tools for accuracy, Save, track, and export measurements

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Version | $1.49 | per 7 days |
| Pro Version | $3.99 | per month |
| Pro Version | $14.99 | per year |
| Pro Version | $25.99 | one-time |


## Frequently asked questions

### Is Secure free?

Secure is free to download, with no in-app purchases.

### Is kelvin light scale free?

kelvin light scale is free to download, with in-app purchases available.

### Do Secure or kelvin light scale have ads?

Secure shows ads; kelvin light scale does not.

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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.*