# TumbleBooks vs World Class TKD Chicago

The clearest difference is rating: World Class TKD Chicago at 5.0 against TumbleBooks's 3.8. TumbleBooks's advantage is ads (none vs shown) and update cadence (every 2 weeks vs every 18 months). On price, ratings volume, 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.

World Class TKD Chicago holds the better App Store score, 5.0 against 3.8. Both are backed by a comparable volume of ratings — 21 and 8 respectively.

TumbleBooks ships an update every 2 weeks, World Class TKD Chicago every 18 months. The most recent releases landed on November 6, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | TumbleBooks | World Class TKD Chicago |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (21 ratings)](https://appshunter.io/ios/app/tumblebooks/id998074198/reviews) | **[5.0 (8 ratings)](https://appshunter.io/ios/app/world-class-tkd-chicago/id1399758416/reviews)** |
| Number of ratings | **21** | 8 |
| Positive reviews | 18.3% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 2 weeks** | Every 18 months |
| Monetization | **Free** | Ad-supported |
| Size | 44 MB | 25 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TumbleBooks Inc.](https://appshunter.io/developer/342957359) | [World Class Tae Kwon Do Centers, Inc.](https://appshunter.io/developer/1399758415) |

## What reviewers say

### TumbleBooks

[App page](https://appshunter.io/ios/app/tumblebooks/id998074198)

This app provides access to a digital library of children's books, offering a safe and contained reading environment. It simplifies access for multiple users with a single sign-on and is available to all subscribers.

**Highlights:** Access TumbleBookLibrary subscription, Single sign-on for multiple devices, Self-contained reading environment, Easy installation and use, Offline access (implied by single sign-on for months)

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 😊 Wonderful stories and playlists
- 👍 Great app for kids
- 👍 Amazing service
- 👍 Superb and convenient access
- 👍 Great content collection

**What reviewers complain about**

- 🐛 Login problems
- 🐛 App crashes frequently
- 🐛 Books not loading
- 🐛 Poor user interface
- 🐛 Content removed

**Reported bugs**

- Unable to login with library card
- Login problem
- Did not let me sign in
- It does not work
- Tumble Mobile Is Broken

**Requested features**

- Offline reading feature
- Filter for age-appropriate books
- Adjustable speed for audio read-alongs
- Option to not require sign-in
- Improve usability


### World Class TKD Chicago

[App page](https://appshunter.io/ios/app/world-class-tkd-chicago/id1399758416)

This app provides access to martial arts curriculum, class schedules, and upcoming events for a leading Tae Kwon Do provider. Users can study Korean terms, connect with the school, and share their TKD journey with others.

**Highlights:** View curriculum manuals and videos, Check class schedules, See upcoming events, Study Korean terms with audio, Contact the school, Share with friends and family

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is TumbleBooks free?

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

### Is World Class TKD Chicago free?

World Class TKD Chicago is free to download, with no in-app purchases.

### Which has better reviews, TumbleBooks or World Class TKD Chicago?

World Class TKD Chicago is rated higher. TumbleBooks averages 3.8 out of 5 from 21 ratings, while World Class TKD Chicago averages 5.0 from 8 ratings.

### Do TumbleBooks or World Class TKD Chicago have ads?

World Class TKD Chicago shows ads; TumbleBooks does not.

### Which is updated more often, TumbleBooks or World Class TKD Chicago?

TumbleBooks ships an update every 2 weeks, and World Class TKD Chicago every 18 months. Most recently, TumbleBooks was updated on November 6, 2026 and World Class TKD Chicago on November 2, 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.*