# Gravity Helix vs Book Worm Helix Bounce

The clearest difference is review sentiment: Gravity Helix at 63% against Book Worm Helix Bounce's 0%. Gravity Helix also leads on rating (4.5 vs 3.5) and ads (none vs shown). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. Gravity Helix sells 1 one-off in-app purchase and Book Worm Helix Bounce sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Gravity Helix holds the better App Store score, 4.5 against 3.5. Both are backed by a comparable volume of ratings — 8 and 2 respectively. Written reviews point the same way: 63% of Gravity Helix's written reviews are positive against 0% of Book Worm Helix Bounce's.

## The numbers

| Metric | Gravity Helix | Book Worm Helix Bounce |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (8 ratings)](https://appshunter.io/ios/app/gravity-helix/id1388865608/reviews)** | [3.5 (2 ratings)](https://appshunter.io/ios/app/book-worm-helix-bounce/id6444636484/reviews) |
| Number of ratings | **8** | 2 |
| Positive reviews | **62.5% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | — |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 100 MB | 258 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Full Fat Productions Ltd](https://appshunter.io/developer/374306144) | [Mad Carnival Entertainment Ltd](https://appshunter.io/developer/445524199) |

## What reviewers say

### Gravity Helix

[App page](https://appshunter.io/ios/app/gravity-helix/id1388865608)

Navigate a spiraling tower by flipping gravity to control a rolling ball. Dodge hazards, collect items, and compete on leaderboards in this endless adventure. Customize your game experience with unlockable content.

**Highlights:** Gravity flipping mechanic, Endless spiraling tower gameplay, Hazard avoidance, Leaderboard competition, Collectible gems and letters, Customization options

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


### Book Worm Helix Bounce

[App page](https://appshunter.io/ios/app/book-worm-helix-bounce/id6444636484)

Guide a cute worm through a literary world of circular platforms. Bounce across book stacks, avoid obstacles, and collect power-ups to escape infected books. Customize your character with unlockable outfits.

**Highlights:** Addictive 3D gameplay with a literary twist, Navigate circular book platforms, Master bouncing and avoid obstacles, Collect power-ups and coins, Unlockable character outfits and skins, Family-friendly casual puzzle game

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coins Pack 1 | $1.99 | one-time |
| Coins Pack 2 | $2.99 | one-time |
| Remove Ads | $3.99 | one-time |
| Coins Pack 3 | $4.99 | one-time |


## Frequently asked questions

### Is Gravity Helix free?

Gravity Helix is free to download, with in-app purchases available.

### Is Book Worm Helix Bounce free?

Book Worm Helix Bounce is free to download, with in-app purchases available.

### Which has better reviews, Gravity Helix or Book Worm Helix Bounce?

Gravity Helix is rated higher. Gravity Helix averages 4.5 out of 5 from 8 ratings, while Book Worm Helix Bounce averages 3.5 from 2 ratings.

### Do Gravity Helix or Book Worm Helix Bounce have ads?

Book Worm Helix Bounce shows ads; Gravity Helix does not.

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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.*