# Geometry Dash Crazy Delivery vs Synth Sum

The clearest difference is in-app purchases: Geometry Dash Crazy Delivery at none against Synth Sum's 5. Geometry Dash Crazy Delivery also leads on iOS requirement (13.0 vs 17.0). Synth Sum's advantage is ads (none vs shown) and update cadence (daily vs every 2 weeks). On price and device support there is nothing between them.

Both are free to download. Synth Sum sells 5 one-off in-app purchases. Geometry Dash Crazy Delivery asks for nothing beyond the download.

Geometry Dash Crazy Delivery ships an update every 2 weeks, Synth Sum daily. The most recent releases landed on October 1, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Geometry Dash Crazy Delivery | Synth Sum |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/synth-sum-neon-dash/id6793998487/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Daily** |
| Monetization | — | Free with in-app purchases |
| Size | 183 MB | 61 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Oleksii Petrochenko](https://appshunter.io/developer/1669228110) | [Matthew Leonard](https://appshunter.io/developer/522479113) |

## What reviewers say

### Geometry Dash Crazy Delivery

[App page](https://appshunter.io/ios/app/geometry-dash-crazy-delivery/id6479947694)

**Features:** macOS Compatibility

**In-app purchases:** none


### Synth Sum

[App page](https://appshunter.io/ios/app/synth-sum-neon-dash/id6793998487)

A neon rhythm dash game where players tap to jump over obstacles and collect numbers. The goal is to hit the exact sum to pass through doors and progress through levels. Features include multiple worlds, practice modes, and leaderboards.

**Highlights:** Tap to jump, Hit exact sum to clear doors, 16 levels across five worlds, Practice with checkpoints, Endless and Daily modes, Earn stars for skins, Game Center leaderboards

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Neon Kit | $1.99 | one-time |
| Sunset Kit | $1.99 | one-time |
| Magenta Kit | $1.99 | one-time |
| Unlock All Worlds | $2.99 | one-time |
| All Kits Bundle | $4.99 | one-time |


## Frequently asked questions

### Is Geometry Dash Crazy Delivery free?

Geometry Dash Crazy Delivery is free to download, with no in-app purchases.

### Is Synth Sum free?

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

### Do Geometry Dash Crazy Delivery or Synth Sum have ads?

Geometry Dash Crazy Delivery shows ads; Synth Sum does not.

### Which is updated more often, Geometry Dash Crazy Delivery or Synth Sum?

Geometry Dash Crazy Delivery ships an update every 2 weeks, and Synth Sum daily. Most recently, Geometry Dash Crazy Delivery was updated on October 1, 2026 and Synth Sum on October 21, 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.*