# Celer vs Ciright Books

The clearest difference is in-app purchases: Ciright Books at none against Celer's 4. Ciright Books also leads on iOS requirement (13.0 vs 18.0). On price, update cadence, 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. Ciright Books asks for nothing beyond the download.

Celer ships an update every 9 days, Ciright Books every 10 days. The most recent releases landed on November 6, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Celer | Ciright Books |
| --- | --- | --- |
| 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 | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 10 days |
| Monetization | Freemium | — |
| Size | 117 MB | 30 MB |
| Requires iOS | 18.0 | **13.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mobile Craft MB](https://appshunter.io/developer/1299128266) | [My Ciright Inc.](https://appshunter.io/developer/483230396) |

## What reviewers say

### Celer

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

This reading app uses guided highlighting to help users maintain focus and comprehension, especially beneficial for those with ADHD or dyslexia. It supports various file formats and offers a distraction-free environment to help you finish books and articles.

**Highlights:** Guided highlighting for focus, Adjustable reading pace, Distraction-free screen, Import EPUB, PDF, MOBI, RTF, TXT, Built-in RSS reader, Notes and highlights

**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 |


### Ciright Books

[App page](https://appshunter.io/ios/app/ciright-books/id6741409587)

**In-app purchases:** none


## Frequently asked questions

### Is Celer free?

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

### Is Ciright Books free?

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

### Do Celer or Ciright Books have ads?

Neither Celer nor Ciright Books shows ads.

### Which is updated more often, Celer or Ciright Books?

Celer ships an update every 9 days, and Ciright Books every 10 days. Most recently, Celer was updated on November 6, 2026 and Ciright Books on November 8, 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.*