# TumbleBooks vs Mathletix Addition

The clearest difference is review sentiment: Mathletix Addition at 100% against TumbleBooks's 18%. Mathletix Addition also leads on rating (5.0 vs 3.8). TumbleBooks's advantage is price (Free vs $9.99) and update cadence (every 2 weeks vs every 3 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

TumbleBooks is free to download; Mathletix Addition costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Mathletix Addition holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: TumbleBooks has 21 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 18% of TumbleBooks's written reviews are positive against 100% of Mathletix Addition's.

TumbleBooks ships an update every 2 weeks, Mathletix Addition every 3 months. The most recent releases landed on October 24, 2026 and July 3, 2026 respectively.

## The numbers

| Metric | TumbleBooks | Mathletix Addition |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Rating | [3.8 (21 ratings)](https://appshunter.io/ios/app/tumblebooks/id998074198/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/mathletix-addition/id1464537822/reviews)** |
| Number of ratings | **21** | 4 |
| Positive reviews | 18.3% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 months |
| Monetization | **Free** | Paid |
| Size | 44 MB | 127 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [TumbleBooks Inc.](https://appshunter.io/developer/342957359) | [Player1games Inc.](https://appshunter.io/developer/1040547964) |

## 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


### Mathletix Addition

[App page](https://appshunter.io/ios/app/mathletix-addition/id1464537822)

This app makes learning addition enjoyable for children through engaging, short games. It focuses on repetition and positive reinforcement, inspired by classroom methods, to build math fluency and confidence without pressure.

**Highlights:** Short, fun game sessions, Repetitive learning through games, Positive feedback system, Progress tracking for parents, Focus on addition fluency, No personal data collection

**In-app purchases:** none


## Frequently asked questions

### Is TumbleBooks free?

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

### Is Mathletix Addition free?

Mathletix Addition costs $9.99, with no in-app purchases.

### Which has better reviews, TumbleBooks or Mathletix Addition?

Mathletix Addition is rated higher. TumbleBooks averages 3.8 out of 5 from 21 ratings, while Mathletix Addition averages 5.0 from 4 ratings.

### Do TumbleBooks or Mathletix Addition have ads?

Neither TumbleBooks nor Mathletix Addition shows ads.

### Which is updated more often, TumbleBooks or Mathletix Addition?

TumbleBooks ships an update every 2 weeks, and Mathletix Addition every 3 months. Most recently, TumbleBooks was updated on October 24, 2026 and Mathletix Addition on July 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*