# Define Gravity vs Block Blaster Fire Fly

The clearest difference is in-app purchases: Define Gravity at none against Block Blaster Fire Fly's 3. Define Gravity also leads on ads (none vs shown) and iOS requirement (13.0 vs 26.2). On price and device support there is nothing between them.

Both are free to download. Block Blaster Fire Fly sells 3 one-off in-app purchases. Define Gravity asks for nothing beyond the download.

## The numbers

| Metric | Define Gravity | Block Blaster Fire Fly |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/define-gravity/id6739888193/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 days | — |
| Monetization | Free | — |
| Size | 154 MB | 25 MB |
| Requires iOS | **13.0** | 26.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [MangumLabs LLC](https://appshunter.io/developer/675487379) | [ALAZ EREKUL](https://appshunter.io/developer/1869935123) |

## What reviewers say

### Define Gravity

[App page](https://appshunter.io/ios/app/define-gravity/id6739888193)

Navigate challenging 2D puzzles by manipulating gravity and using a magnetic force. This game offers a unique twist on puzzle-solving with its core mechanics.

**Highlights:** Gravity manipulation, Magnetic force mechanics, 2D puzzle gameplay, Challenging levels

**Features:** macOS Compatibility

**In-app purchases:** none


### Block Blaster Fire Fly

[App page](https://appshunter.io/ios/app/block-blaster-fire-fly/id6759800194)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 200 Gems | $0.99 | one-time |
| 500 Gems | $1.99 | one-time |
| 1000 Gems | $3.99 | one-time |


## Frequently asked questions

### Is Define Gravity free?

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

### Is Block Blaster Fire Fly free?

Block Blaster Fire Fly is free to download, with in-app purchases available.

### Do Define Gravity or Block Blaster Fire Fly have ads?

Block Blaster Fire Fly shows ads; Define Gravity 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.*