# 98thPercentile vs Book

The clearest difference is update cadence: Book at every 10 days against 98thPercentile's monthly. 98thPercentile's advantage is iOS requirement (15.1 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

98thPercentile ships an update monthly, Book every 10 days. The most recent releases landed on October 30, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | 98thPercentile | Book |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/98thpercentile/id6740798658/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 10 days** |
| Monetization | Free | — |
| Size | 36 MB | 9 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [CAREER DRIVE LLC](https://appshunter.io/developer/1789714664) | [Sarath Francis](https://appshunter.io/developer/1882468568) |

## What reviewers say

### 98thPercentile

[App page](https://appshunter.io/ios/app/98thpercentile/id6740798658)

This app provides online live classes in Math, Coding, Public Speaking, and English for K-12 students. It focuses on developing critical thinking, problem-solving, and college readiness skills through personalized lessons.

**Highlights:** Online live classes, Personalized lessons, Free trial booking, Digital event registration, Program overviews, Skill development

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

**In-app purchases:** none


### Book

[App page](https://appshunter.io/ios/app/book-e-kids/id6801709291)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 98thPercentile free?

98thPercentile is free to download, with no in-app purchases.

### Is Book free?

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

### Do 98thPercentile or Book have ads?

Neither 98thPercentile nor Book shows ads.

### Which is updated more often, 98thPercentile or Book?

98thPercentile ships an update monthly, and Book every 10 days. Most recently, 98thPercentile was updated on October 30, 2026 and Book on November 6, 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.*