# 読書メモ vs Sleepless Browser

The clearest difference is review sentiment: Sleepless Browser at 100% against 読書メモ's 53%. 読書メモ's advantage is iOS requirement (12.0 vs 15.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. 読書メモ sells 1 one-off in-app purchase and Sleepless Browser sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

読書メモ ships an update every 3 months, Sleepless Browser every 2 months. The most recent releases landed on November 1, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | 読書メモ | Sleepless Browser |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (1 ratings)](https://appshunter.io/ios/app/sleepless-browser/id555875750/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 52.6% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | — | Free with in-app purchases |
| Size | 1 MB | 7 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [enaksoft.com](https://appshunter.io/developer/521038978) | [ITO SOFT DESIGN Inc.](https://appshunter.io/developer/311313017) |

## What reviewers say

### 読書メモ

[App page](https://appshunter.io/ios/app/id541494849)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| データ追加の回数制限解除 | $1.99 | one-time |


### Sleepless Browser

[App page](https://appshunter.io/ios/app/sleepless-browser/id555875750)

This browser prevents your device from sleeping while you browse, ideal for recipes, videos, or real-time content. It also features a screen lock to prevent accidental touches, perfect for keeping children engaged with media.

**Highlights:** Prevents automatic screen sleep, Screen lock feature, Disables touch screen input, Ideal for recipes and videos, Useful for real-time content

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Hide the Ad. For early adopter | Free | one-time |
| Hide the Ad | $1.99 | one-time |


## Frequently asked questions

### Is 読書メモ free?

読書メモ is free to download, with in-app purchases available.

### Is Sleepless Browser free?

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

### Do 読書メモ or Sleepless Browser have ads?

Neither 読書メモ nor Sleepless Browser shows ads.

### Which is updated more often, 読書メモ or Sleepless Browser?

読書メモ ships an update every 3 months, and Sleepless Browser every 2 months. Most recently, 読書メモ was updated on November 1, 2026 and Sleepless Browser on October 23, 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.*