# Light Detective vs 23Ingredients

The clearest difference is update cadence: 23Ingredients at weekly against Light Detective's every 8 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Light Detective ships an update every 8 months, 23Ingredients weekly. The most recent releases landed on October 24, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Light Detective | 23Ingredients |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/light-detective/id1260936039/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Weekly** |
| Monetization | Free | — |
| Size | 120 MB | 39 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Signet Armorlite, Inc.](https://appshunter.io/developer/584848264) | [Amaury Saugrain](https://appshunter.io/developer/1668692010) |

## What reviewers say

### Light Detective

[App page](https://appshunter.io/ios/app/light-detective/id1260936039)

This app educates patients about blue light and UV radiation, demonstrating the benefits of blue-coated lenses with simulations and images. It also measures blue light and UV radiation from various sources to enhance patient understanding.

**Highlights:** Patient education on blue light and UV, Simulations and images of lens benefits, Blue light measurement from light sources, UV radiation measurement, Information for eye care professionals

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

**In-app purchases:** none


### 23Ingredients

[App page](https://appshunter.io/ios/app/23ingredients/id1668692008)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Light Detective free?

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

### Is 23Ingredients free?

23Ingredients is free to download, with no in-app purchases.

### Do Light Detective or 23Ingredients have ads?

Neither Light Detective nor 23Ingredients shows ads.

### Which is updated more often, Light Detective or 23Ingredients?

Light Detective ships an update every 8 months, and 23Ingredients weekly. Most recently, Light Detective was updated on October 24, 2026 and 23Ingredients on October 15, 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.*