# Bluespec HEV vs Light Detective

The clearest difference is update cadence: Bluespec HEV at monthly against Light Detective's every 8 months. Light Detective's advantage is iOS requirement (13.0 vs 15.0). 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.

Bluespec HEV ships an update monthly, Light Detective every 8 months. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Bluespec HEV | Light Detective |
| --- | --- | --- |
| 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 | **Monthly** | Every 8 months |
| Monetization | — | Free |
| Size | 125 MB | 120 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [viewitech Co., Ltd.](https://appshunter.io/developer/644211372) | [Signet Armorlite, Inc.](https://appshunter.io/developer/584848264) |

## What reviewers say

### Bluespec HEV

[App page](https://appshunter.io/ios/app/bluespec-hev/id1166823229)

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Bluespec HEV free?

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

### Is Light Detective free?

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

### Do Bluespec HEV or Light Detective have ads?

Neither Bluespec HEV nor Light Detective shows ads.

### Which is updated more often, Bluespec HEV or Light Detective?

Bluespec HEV ships an update monthly, and Light Detective every 8 months. Most recently, Bluespec HEV was updated on October 26, 2026 and Light Detective on October 24, 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.*