# EWINDOW vs Reef Book

The clearest difference is price: EWINDOW at Free against Reef Book's $5.99. EWINDOW also leads on iOS requirement (15.6 vs 26.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

EWINDOW is free to download; Reef Book costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

EWINDOW ships an update every 7 months, Reef Book every 6 months. The most recent releases landed on September 8, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | EWINDOW | Reef Book |
| --- | --- | --- |
| Price | **Free** | $5.99 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 6 months** |
| Monetization | Free | — |
| Size | 7 MB | 166 MB |
| Requires iOS | **15.6** | 26.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Ewinlight Technology Co.,Ltd](https://appshunter.io/developer/1255795700) | [ReefSoft LLC](https://appshunter.io/developer/1789068807) |

## What reviewers say

### EWINDOW

[App page](https://appshunter.io/ios/app/ewindow/id1255795701)

Control smart lighting products with customizable automatic modes and manual settings. Manage groups of lights and edit item codes for a flexible lighting experience.

**Highlights:** Custom automatic control modes, Manual lighting features, Edit item codes, Set and manage groups, Convenient control

**Features:** macOS Compatibility

**In-app purchases:** none


### Reef Book

[App page](https://appshunter.io/ios/app/reef-book/id6740756140)

**Features:** iMessage stickers

**In-app purchases:** none


## Frequently asked questions

### Is EWINDOW free?

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

### Is Reef Book free?

Reef Book costs $5.99, with no in-app purchases.

### Do EWINDOW or Reef Book have ads?

Neither EWINDOW nor Reef Book shows ads.

### Which is updated more often, EWINDOW or Reef Book?

EWINDOW ships an update every 7 months, and Reef Book every 6 months. Most recently, EWINDOW was updated on September 8, 2026 and Reef Book on September 18, 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.*