# Blinkword Speed Reading vs Open Citadel

The clearest difference is in-app purchases: Open Citadel at none against Blinkword Speed Reading's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Blinkword Speed Reading sells 1 in-app purchase, starting at $4.99 per month. Open Citadel asks for nothing beyond the download.

Blinkword Speed Reading ships an update weekly, Open Citadel fortnightly. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Blinkword Speed Reading | Open Citadel |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (2 ratings)](https://appshunter.io/ios/app/blinkword-speed-reading/id6758642618/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Fortnightly |
| Monetization | Freemium | — |
| Size | 18 MB | 95 MB |
| Requires iOS | 18.6 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Shawn Gilronan](https://appshunter.io/developer/1786789478) | [Thamsanqa Ncube](https://appshunter.io/developer/6789093614) |

## What reviewers say

### Blinkword Speed Reading

[App page](https://appshunter.io/ios/app/blinkword-speed-reading/id6758642618)

Enhance your reading speed and comprehension with a scientifically-backed technique that displays words one at a time. Import documents, customize your reading experience, and track your progress to build a consistent reading habit.

**Highlights:** RSVP speed reading technique, Import PDFs and ePubs, Customizable reading speed (100-1000 WPM), Adjustable font size and themes, Progress tracking and statistics, Library organization with smart filters, iCloud sync across devices

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Blinkword Premium | $4.99 | per month |


### Open Citadel

[App page](https://appshunter.io/ios/app/open-citadel-self-development/id6789093612)

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

**In-app purchases:** none


## Frequently asked questions

### Is Blinkword Speed Reading free?

Blinkword Speed Reading is free to download, with in-app purchases available.

### Is Open Citadel free?

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

### Do Blinkword Speed Reading or Open Citadel have ads?

Neither Blinkword Speed Reading nor Open Citadel shows ads.

### Which is updated more often, Blinkword Speed Reading or Open Citadel?

Blinkword Speed Reading ships an update weekly, and Open Citadel fortnightly. Most recently, Blinkword Speed Reading was updated on November 5, 2026 and Open Citadel on October 31, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*