# The Radiant Math Game vs PlayNook Interactive Audiobook

The clearest difference is in-app purchases: The Radiant Math Game at none against PlayNook Interactive Audiobook's 10. The Radiant Math Game also leads on iOS requirement (12.0 vs 15.1). PlayNook Interactive Audiobook's advantage is ads (none vs shown) and update cadence (every 2 weeks vs every 10 months). On price and device support there is nothing between them.

Both are free to download. PlayNook Interactive Audiobook sells 10 one-off in-app purchases. The Radiant Math Game asks for nothing beyond the download.

The Radiant Math Game ships an update every 10 months, PlayNook Interactive Audiobook every 2 weeks. The most recent releases landed on October 29, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | The Radiant Math Game | PlayNook Interactive Audiobook |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (8 ratings)](https://appshunter.io/ios/app/playnook-interactive-audiobook/id6446488013/reviews)** |
| Number of ratings | — | **8** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 10 months | **Every 2 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 58 MB | 165 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Martin Antell](https://appshunter.io/developer/1451457482) | [PlayNook srl](https://appshunter.io/developer/1678068295) |

## What reviewers say

### The Radiant Math Game

[App page](https://appshunter.io/ios/app/the-radiant-math-game/id1550657253)

**Features:** macOS Compatibility

**In-app purchases:** none


### PlayNook Interactive Audiobook

[App page](https://appshunter.io/ios/app/playnook-interactive-audiobook/id6446488013)

Engage in immersive audio adventures where your voice guides the narrative. Explore a vast library of interactive stories, make choices that shape your journey, and experience RPG elements in this unique storytelling app.

**Highlights:** Voice-activated gameplay, Expansive library of interactive stories, RPG mechanics and inventory management, Dynamic sound design, Choose your own adventure narratives, Playable on the go

**Features:** Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Marco Polo \| Chapter 2 | $0.99 | one-time |
| Marco Polo \| Chapter 3 | $0.99 | one-time |
| Marco Polo \| Chapter 4 | $0.99 | one-time |
| Marco Polo \| Chapter 6 | $0.99 | one-time |
| The Christmas Raccoons \| Bert | $1.99 | one-time |
| The Christmas Raccoons \| Schaeffer | $1.99 | one-time |
| Mary Read | $1.99 | one-time |
| My Bonny My Lassie \| Season | $2.99 | one-time |
| Cthulu \| Lovecraft Country 1922 | $3.99 | one-time |
| Fairytale Guardian \| S1 | $4.99 | one-time |


## Frequently asked questions

### Is The Radiant Math Game free?

The Radiant Math Game is free to download, with no in-app purchases.

### Is PlayNook Interactive Audiobook free?

PlayNook Interactive Audiobook is free to download, with in-app purchases available.

### Do The Radiant Math Game or PlayNook Interactive Audiobook have ads?

The Radiant Math Game shows ads; PlayNook Interactive Audiobook does not.

### Which is updated more often, The Radiant Math Game or PlayNook Interactive Audiobook?

The Radiant Math Game ships an update every 10 months, and PlayNook Interactive Audiobook every 2 weeks. Most recently, The Radiant Math Game was updated on October 29, 2026 and PlayNook Interactive Audiobook on November 3, 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.*