# BlockBlueLight vs HarperCrewe

The clearest difference is update cadence: BlockBlueLight at every 5 days against HarperCrewe's every 6 weeks. BlockBlueLight also leads on iOS requirement (13.0 vs 17.0). 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.

BlockBlueLight ships an update every 5 days, HarperCrewe every 6 weeks. The most recent releases landed on October 20, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | BlockBlueLight | HarperCrewe |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.5 (4 ratings)](https://appshunter.io/ios/app/blockbluelight/id6670414997/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 6 weeks |
| Monetization | Free | — |
| Size | 39 MB | 31 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Blockbluelight limited](https://appshunter.io/developer/1766199755) | [HARPERCREWE LTD](https://appshunter.io/developer/1791523582) |

## What reviewers say

### BlockBlueLight

[App page](https://appshunter.io/ios/app/blockbluelight/id6670414997)

Control your red light therapy sessions with this app. Adjust timer, intensity, and pulsing modes for personalized wellness. Optimize your experience for skin health, recovery, or sleep.

**Highlights:** Adjustable timer for session duration, Control light intensity, Selectable pulsing modes, Personalize therapy experience, Smartphone control

**Features:** macOS Compatibility

**In-app purchases:** none


### HarperCrewe

[App page](https://appshunter.io/ios/app/harpercrewe/id6740773101)

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

**In-app purchases:** none


## Frequently asked questions

### Is BlockBlueLight free?

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

### Is HarperCrewe free?

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

### Do BlockBlueLight or HarperCrewe have ads?

Neither BlockBlueLight nor HarperCrewe shows ads.

### Which is updated more often, BlockBlueLight or HarperCrewe?

BlockBlueLight ships an update every 5 days, and HarperCrewe every 6 weeks. Most recently, BlockBlueLight was updated on October 20, 2026 and HarperCrewe 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.*