# Klausykla vs Celer

The clearest difference is in-app purchases: Klausykla at none against Celer's 4. Klausykla also leads on iOS requirement (11.0 vs 18.0). Celer's advantage is update cadence (every 9 days vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. Celer sells 4 in-app purchases, starting at $7.99 per month. Klausykla asks for nothing beyond the download.

Klausykla ships an update every 2 months, Celer every 9 days. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Klausykla | Celer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (21 ratings)](https://appshunter.io/ios/app/celer-adhd-and-focus-reader/id1641298256/reviews)** |
| Number of ratings | — | **21** |
| Positive reviews | — | 57.1% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 9 days** |
| Monetization | — | Freemium |
| Size | 112 MB | 115 MB |
| Requires iOS | **11.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Klausykla UAB](https://appshunter.io/developer/1597468497) | [Mobile Craft MB](https://appshunter.io/developer/1299128266) |

## What reviewers say

### Klausykla

[App page](https://appshunter.io/ios/app/klausykla/id1597468495)

**In-app purchases:** none


### Celer

[App page](https://appshunter.io/ios/app/celer-adhd-and-focus-reader/id1641298256)

Enhance your reading speed, focus, and comprehension with a scientifically-backed method. This app offers an immersive environment and assistive technology to help you absorb information faster and retain it better. It's an essential tool for students, professionals, and individuals with neurodivergent reading needs.

**Highlights:** Read 2-3x faster, Sharpen focus with immersive environment, Boost memory and retention, Assistive tool for ADHD & Dyslexia, Import EPUB, PDF, mobi, rtf, txt, Read articles and web content, Customizable themes

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium month | $7.99 | per month |
| Premium quarter | $17.99 | per 3 months |
| Premium Year | $34.99 | per year |
| Premium Year Plan | $79.99 | per year |


## Frequently asked questions

### Is Klausykla free?

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

### Is Celer free?

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

### Do Klausykla or Celer have ads?

Neither Klausykla nor Celer shows ads.

### Which is updated more often, Klausykla or Celer?

Klausykla ships an update every 2 months, and Celer every 9 days. Most recently, Klausykla was updated on October 27, 2026 and Celer on October 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.*