# Read Fast vs 瀬読

The clearest difference is ads: Read Fast at none against 瀬読's shown. Read Fast also leads on update cadence (every 2 days vs weekly) and iOS requirement (16.4 vs 18.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Read Fast sells 3 in-app purchases, starting at $4.99 per month and 瀬読 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Read Fast ships an update every 2 days, 瀬読 weekly. The most recent releases landed on October 20, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Read Fast | 瀬読 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/read-fast-absorb/id6759666710/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 days** | Weekly |
| Monetization | Freemium | — |
| Size | 164 MB | 16 MB |
| Requires iOS | **16.4** | 18.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Maksym Horoszczak](https://appshunter.io/developer/1857044674) | [KOUSEI KURODA](https://appshunter.io/developer/890740420) |

## What reviewers say

### Read Fast

[App page](https://appshunter.io/ios/app/read-fast-absorb/id6759666710)

This app helps you read faster by displaying words sequentially in the center of the screen, reducing subvocalization and improving focus. It supports various file formats and tracks your reading progress to build a consistent habit.

**Highlights:** Rapid Serial Visual Presentation (RSVP) engine, Breaks subvocalization bottleneck, Import EPUB, PDF, TXT, and pasted text, Track daily streaks and WPM, Reduces eye fatigue, Local device processing for privacy

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Absorb | $4.99 | per month |
| Absorb Pro Annual | $19.99 | per year |
| Absorb Pro Lifetime | $69.99 | one-time |


### 瀬読

[App page](https://appshunter.io/ios/app/id6797235161)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告の削除と栞無制限 | $3.99 | one-time |


## Frequently asked questions

### Is Read Fast free?

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

### Is 瀬読 free?

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

### Do Read Fast or 瀬読 have ads?

瀬読 shows ads; Read Fast does not.

### Which is updated more often, Read Fast or 瀬読?

Read Fast ships an update every 2 days, and 瀬読 weekly. Most recently, Read Fast was updated on October 20, 2026 and 瀬読 on October 12, 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.*