# SPHERE vs Coreforge Tower Defense

The clearest difference is ads: Coreforge Tower Defense at none against SPHERE's shown. SPHERE's advantage is iOS requirement (13.0 vs 17.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | SPHERE | Coreforge Tower Defense |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | — |
| Size | 154 MB | 18 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Tomoki Fukushima](https://appshunter.io/developer/1777185003) | [Mobirizer](https://appshunter.io/developer/1141913793) |

## What reviewers say

### SPHERE

[App page](https://appshunter.io/ios/app/sphere-defense/id6737588413)

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

**In-app purchases:** none


### Coreforge Tower Defense

[App page](https://appshunter.io/ios/app/coreforge-tower-defense/id6794402637)

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

**In-app purchases:** none


## Frequently asked questions

### Is SPHERE free?

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

### Is Coreforge Tower Defense free?

Coreforge Tower Defense is free to download, with no in-app purchases.

### Do SPHERE or Coreforge Tower Defense have ads?

SPHERE shows ads; Coreforge Tower Defense 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.*