# Circular Defense vs Idle Empires

The clearest difference is ads: Circular Defense at none against Idle Empires's shown. Circular Defense also leads on update cadence (every 2 days vs every 3 weeks) and iOS requirement (8.0 vs 13.0). 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.

Circular Defense ships an update every 2 days, Idle Empires every 3 weeks. The most recent releases landed on October 24, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Circular Defense | Idle Empires |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.4 (8 ratings)](https://appshunter.io/ios/app/circular-defense/id1410103026/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 2 days** | Every 3 weeks |
| Monetization | Free | — |
| Size | 124 MB | 175 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Picola Inc.](https://appshunter.io/developer/983881487) | [Charmy Inc.](https://appshunter.io/developer/1614810828) |

## What reviewers say

### Circular Defense

[App page](https://appshunter.io/ios/app/circular-defense/id1410103026)

Engage in a unique tower defense experience where enemies approach the core from all sides. Strategically place and upgrade circular turrets to defend your position across over 50 challenging stages. Enjoy a smooth, time-killing gameplay with simple controls and deep strategic possibilities.

**Highlights:** Unique circular turret defense, Strategic placement and upgrades, Over 50 challenging stages, Easy to operate controls, Smooth, time-killing gameplay

**Features:** macOS Compatibility

**In-app purchases:** none


### Idle Empires

[App page](https://appshunter.io/ios/app/idle-empires-battle-simulator/id6736528640)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Circular Defense free?

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

### Is Idle Empires free?

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

### Do Circular Defense or Idle Empires have ads?

Idle Empires shows ads; Circular Defense does not.

### Which is updated more often, Circular Defense or Idle Empires?

Circular Defense ships an update every 2 days, and Idle Empires every 3 weeks. Most recently, Circular Defense was updated on October 24, 2026 and Idle Empires on October 4, 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.*