# PolyFill vs Gravity Trance

The clearest difference is rating: Gravity Trance at 3.7 against PolyFill's 2.3. Gravity Trance also leads on in-app purchases (none vs 3) and ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. PolyFill sells 3 one-off in-app purchases. Gravity Trance asks for nothing beyond the download.

Gravity Trance holds the better App Store score, 3.7 against 2.3. Both are backed by a comparable volume of ratings — 3 and 12 respectively.

## The numbers

| Metric | PolyFill | Gravity Trance |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.3 (3 ratings)](https://appshunter.io/ios/app/polyfill/id987147033/reviews) | **[3.7 (12 ratings)](https://appshunter.io/ios/app/gravity-trance/id1478622941/reviews)** |
| Number of ratings | 3 | **12** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 6 months | — |
| Monetization | Free with in-app purchases | **Free** |
| Size | 15 MB | 95 MB |
| Requires iOS | 14.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Kelly Technology Inc.](https://appshunter.io/developer/393931941) | [Mythic Robe Games](https://appshunter.io/developer/1478622940) |

## What reviewers say

### PolyFill

[App page](https://appshunter.io/ios/app/polyfill/id987147033)

A brain-training puzzle game where you race against the clock to assemble geometric shapes. Earn points based on difficulty and speed, and compete on leaderboards. Unlock additional complexity and scoring through optional in-app purchases.

**Highlights:** Brain-training puzzles, Timed challenges, Geometric shape assembly, Scoring based on difficulty and time, Game Center leaderboards, Achievement awards, In-app purchases for complexity

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads. | $1.99 | one-time |
| Unlock level 2 | $1.99 | one-time |
| Unlock level 3 | $1.99 | one-time |


### Gravity Trance

[App page](https://appshunter.io/ios/app/gravity-trance/id1478622941)

A minimalist puzzle game where players rotate mazes to guide a character to a checkpoint. It offers a challenging mental exercise with increasing difficulty and unique mechanics like reverse gravity. Enjoy a visually appealing experience with calming music.

**Highlights:** Maze rotation gameplay, Character and checkpoint merging, Increasing difficulty levels, Reverse gravity mechanics, Minimalist art style, Melodious background music

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

**In-app purchases:** none


## Frequently asked questions

### Is PolyFill free?

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

### Is Gravity Trance free?

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

### Which has better reviews, PolyFill or Gravity Trance?

Gravity Trance is rated higher. PolyFill averages 2.3 out of 5 from 3 ratings, while Gravity Trance averages 3.7 from 12 ratings.

### Do PolyFill or Gravity Trance have ads?

PolyFill shows ads; Gravity Trance 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.*