# Sphere TD vs SettleUp

The clearest difference is update cadence: Sphere TD at every 3 days against SettleUp's fortnightly. Sphere TD also leads on iOS requirement (15.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Sphere TD sells 10 one-off in-app purchases and SettleUp sells 5 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Sphere TD ships an update every 3 days, SettleUp fortnightly. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Sphere TD | SettleUp |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (10 ratings)](https://appshunter.io/ios/app/sphere-td/id6753674090/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 3 days** | Fortnightly |
| Monetization | Free with in-app purchases | — |
| Size | 316 MB | 75 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 12+ | 4+ |
| Developer | [StandardIssueGames](https://appshunter.io/developer/1844319777) | [Treeport Holdings LLC](https://appshunter.io/developer/1271439585) |

## 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 |


### SettleUp

[App page](https://appshunter.io/ios/app/settleup-play-against-ai/id6758682114)

**Features:** Family Sharing, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $4.99 | per month |
| Premium+ Monthly | $9.99 | per month |
| Premium Annual | $49.99 | per year |
| Premium+ Annual | $99.99 | per year |
| Offline Mode Lifetime | $9.99 | one-time |


## Frequently asked questions

### Is Sphere TD free?

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

### Is SettleUp free?

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

### Do Sphere TD or SettleUp have ads?

Both Sphere TD and SettleUp show ads.

### Which is updated more often, Sphere TD or SettleUp?

Sphere TD ships an update every 3 days, and SettleUp fortnightly. Most recently, Sphere TD was updated on October 30, 2026 and SettleUp on October 28, 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.*