# Sphere TD vs Overclock Grid

Sphere TD and Overclock Grid are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Sphere TD sells 10 one-off in-app purchases and Overclock Grid sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Sphere TD | Overclock Grid |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (9 ratings)](https://appshunter.io/ios/app/sphere-td/id6753674090/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 days | — |
| Monetization | Free with in-app purchases | — |
| Size | 332 MB | 44 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [StandardIssueGames](https://appshunter.io/developer/1844319777) | [AYBERK YATAGAN](https://appshunter.io/developer/1857686299) |

## What reviewers say

### Sphere TD

[App page](https://appshunter.io/ios/app/sphere-td/id6753674090)

A complex tower defense game where you build and upgrade towers to defend against waves of spheres. Strategize with deep customization, resource management, and research to overcome challenges. Offers extensive replayability with numerous levels and modes.

**Highlights:** Tower and projectile customization, 30 base towers with 28+ stats, 33 mods with millions of combinations, Research and crafting system, Tower inventory and energy management, 50 hand-crafted levels and endless mode, Offline and online play with cloud sync

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Au Field Ration | $4.99 | one-time |
| Defender Starter Pack | $7.99 | one-time |
| Au Supply Cache | $9.99 | one-time |
| Galatium Express Token | $9.99 | one-time |
| Galatium Academy Pack | $14.99 | one-time |
| Shadow Broker Vantage | $19.99 | one-time |
| Au Enterprise Fund | $24.99 | one-time |
| Flux Enrichment Grant | $24.99 | one-time |
| Au Strategic Stockpile | $49.99 | one-time |
| Au Global Reserve | $99.99 | one-time |


### Overclock Grid

[App page](https://appshunter.io/ios/app/overclock-grid-pc-builder/id6788538428)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Starter Pack | $1.99 | one-time |
| Remove Ads | $3.99 | one-time |


## Frequently asked questions

### Is Sphere TD free?

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

### Is Overclock Grid free?

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

### Do Sphere TD or Overclock Grid have ads?

Both Sphere TD and Overclock Grid show ads.

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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.*