# DropOS vs Gravity Graffiti

The clearest difference is in-app purchases: DropOS at none against Gravity Graffiti's 1. DropOS also leads on ads (none vs shown). Gravity Graffiti's advantage is update cadence (every 3 days vs every 6 days). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Gravity Graffiti sells 1 one-off in-app purchase. DropOS asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for DropOS against 5.0 for Gravity Graffiti. Both are backed by a comparable volume of ratings — 3 and 3 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

DropOS ships an update every 6 days, Gravity Graffiti every 3 days. The most recent releases landed on October 24, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | DropOS | Gravity Graffiti |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/dropos-marble-machine/id6788594506/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/gravity-graffiti-draw-and-drop/id6802697375/reviews) |
| Number of ratings | 3 | 3 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 days | **Every 3 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 70 MB | 11 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [LaunchKitOS](https://appshunter.io/developer/6820402257) | [RYLEE DEAN MAXWELL](https://appshunter.io/developer/6800516302) |

## What reviewers say

### DropOS

[App page](https://appshunter.io/ios/app/dropos-marble-machine/id6788594506)

Engage in a physics-based puzzle game where you strategically drop marbles into a contraption. Plan the sequence of drops to guide each marble into its matching bin, with each marble's passage altering the machine for the next.

**Highlights:** Physics-based contraption puzzles, Strategic marble dropping, 100 hand-designed levels, Weekly leaderboard, Earn in-game cogs, Bonus brass pin board

**In-app purchases:** none


### Gravity Graffiti

[App page](https://appshunter.io/ios/app/gravity-graffiti-draw-and-drop/id6802697375)

A physics puzzle game where you draw lines to guide falling confetti into a gravity hole. Over 100 levels feature unique challenges like moving obstacles and limited ink. Customize your game with collected sparks and earn rewards by completing goals.

**Highlights:** 100 handcrafted physics puzzle levels, Draw solutions with your finger, Earn Stars and chase Perfect Drops, Collect Sparks for cosmetic unlocks, Customize lines, confetti, and effects, Complete Goals for milestone rewards

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Lives | $2.99 | one-time |


## Frequently asked questions

### Is DropOS free?

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

### Is Gravity Graffiti free?

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

### Which has better reviews, DropOS or Gravity Graffiti?

DropOS and Gravity Graffiti are both rated 5.0 out of 5 on the App Store, from 3 and 3 ratings respectively.

### Do DropOS or Gravity Graffiti have ads?

Gravity Graffiti shows ads; DropOS does not.

### Which is updated more often, DropOS or Gravity Graffiti?

DropOS ships an update every 6 days, and Gravity Graffiti every 3 days. Most recently, DropOS was updated on October 24, 2026 and Gravity Graffiti on October 15, 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.*