# Quail Reader vs CertDojo CISSP

The clearest difference is iOS requirement: Quail Reader at 15.5 against CertDojo CISSP's 17.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Quail Reader sells 3 in-app purchases, starting at $8.99 per month and CertDojo CISSP sells 1 in-app purchase, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Quail Reader | CertDojo CISSP |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/quail-reader/id6751991221/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | — |
| Monetization | Freemium | — |
| Size | 76 MB | 13 MB |
| Requires iOS | **15.5** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Andrew Yong](https://appshunter.io/developer/1837807848) | [Joseph Fago](https://appshunter.io/developer/1892059967) |

## What reviewers say

### Quail Reader

[App page](https://appshunter.io/ios/app/quail-reader/id6751991221)

Enhance learning retention with a memory-optimized reader. Import articles, EPUBs, and text into a distraction-free environment. Utilize spaced repetition and incremental reading to transform information into lasting knowledge.

**Highlights:** Memory-optimized reading, Spaced repetition, Distraction-free environment, Incremental reading, Content import (articles, EPUBs, text), Knowledge modules, Useful annotations

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Quail Monthly | $8.99 | per month |
| Quail Annual | $69.99 | per year |
| Quail Lifetime | $34.99 | one-time |


### CertDojo CISSP

[App page](https://appshunter.io/ios/app/certdojo-cissp/id6762141245)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CertDojo CISSP Pro | $12.99 | per month |


## Frequently asked questions

### Is Quail Reader free?

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

### Is CertDojo CISSP free?

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

### Do Quail Reader or CertDojo CISSP have ads?

Neither Quail Reader nor CertDojo CISSP shows ads.

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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.*