# Blue Light Filter vs Readlight

The clearest difference is review sentiment: Readlight at 100% against Blue Light Filter's 3%. Readlight also leads on rating (4.7 vs 3.3). Blue Light Filter's advantage is update cadence (weekly vs every 3 weeks). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Blue Light Filter sells 5 in-app purchases, starting at $4.99 per 7 days and Readlight sells 8 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Readlight holds the better App Store score, 4.7 against 3.3. Both are backed by a comparable volume of ratings — 137 and 317 respectively. Written reviews point the same way: 3% of Blue Light Filter's written reviews are positive against 100% of Readlight's.

Blue Light Filter ships an update weekly, Readlight every 3 weeks. The most recent releases landed on September 21, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Blue Light Filter | Readlight |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.3 (137 ratings)](https://appshunter.io/ios/app/blue-light-filter/id6463748819/reviews) | **[4.7 (317 ratings)](https://appshunter.io/ios/app/readlight-night-reading-light/id6541750866/reviews)** |
| Number of ratings | 137 | **317** |
| Positive reviews | 2.7% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 19 MB | 61 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Rivia Corp s.r.o.](https://appshunter.io/developer/1698333588) | [Emre Balli](https://appshunter.io/developer/1635136655) |

## What reviewers say

### Blue Light Filter

[App page](https://appshunter.io/ios/app/blue-light-filter/id6463748819)

Reduce eye strain and improve sleep with an adjustable blue light filter. Organize your files, photos, and videos with an integrated file manager. Enjoy a seamless web browsing experience with built-in filtering and bookmarking.

**Highlights:** Adjustable blue light filter, Eye strain relief, Improved sleep quality, Intuitive file manager, Zip/unzip support, Integrated web browser

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $4.99 | per 7 days |
| 1 month | $6.99 | per month |
| Blue Light Filter - Monthly | $7.99 | per month |
| 1 year | $24.99 | per year |
| Annually | $29.99 | per year |


### Readlight

[App page](https://appshunter.io/ios/app/readlight-night-reading-light/id6541750866)

Transform your phone into an eye-friendly reading lamp. Enjoy a customizable, soft glow that reduces eye strain and aids relaxation, perfect for reading in bed without disturbing others. Features include a smart sleep timer and always-on display.

**Highlights:** Screen as a reading lamp, Eye care and blue light filter, Smart sleep timer, Adjustable brightness, Always-on display

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Water | $1.99 | per month |
| Coffee | $3.99 | per month |
| Tea | $6.99 | per month |
| Teapot | $19.99 | per month |
| Water | $1.99 | one-time |
| Coffee | $3.99 | one-time |
| Uncle Iroh's Tea | $6.99 | one-time |
| Teapot | $19.99 | one-time |


## Frequently asked questions

### Is Blue Light Filter free?

Blue Light Filter is free to download, with in-app purchases available.

### Is Readlight free?

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

### Which has better reviews, Blue Light Filter or Readlight?

Readlight is rated higher. Blue Light Filter averages 3.3 out of 5 from 137 ratings, while Readlight averages 4.7 from 317 ratings.

### Do Blue Light Filter or Readlight have ads?

Neither Blue Light Filter nor Readlight shows ads.

### Which is updated more often, Blue Light Filter or Readlight?

Blue Light Filter ships an update weekly, and Readlight every 3 weeks. Most recently, Blue Light Filter was updated on September 21, 2026 and Readlight on September 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.*