# Rush Defense vs Mathopia

The clearest difference is ads: Mathopia at none against Rush Defense's shown. Mathopia also leads on update cadence (weekly vs fortnightly). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Rush Defense sells 10 one-off in-app purchases and Mathopia sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Rush Defense ships an update fortnightly, Mathopia weekly. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Rush Defense | Mathopia |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (509 ratings)](https://appshunter.io/ios/app/rush-defense-idle-td/id6474822680/reviews)** | — |
| Number of ratings | **509** | — |
| Positive reviews | 18.4% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 445 MB | 51 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [HONG KONG BASIC TECHNOLOGY LIMITED](https://appshunter.io/developer/1624254775) | [Huynh Nam](https://appshunter.io/developer/1841834677) |

## What reviewers say

### Rush Defense

[App page](https://appshunter.io/ios/app/rush-defense-idle-td/id6474822680)

Defend mystical realms from monstrous adversaries in this idle tower defense game. Strategically place towers, unleash spells, and upgrade your defenses to fend off relentless enemy waves. Progress and strengthen your defenses even while offline.

**Highlights:** Unique tower defense gameplay, Strategic tower placement, Powerful spell unleashing, Idle progression system, Offline defense strengthening, Tower and ability upgrades

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gift Pack 1 | $0.99 | one-time |
| First Recharge Pack | $0.99 | one-time |
| limit crystal | $1.99 | one-time |
| limit diamonds | $1.99 | one-time |
| Basic Diamond Piggy Bank | $7.99 | one-time |
| Monthly Card | $9.99 | one-time |
| Novice Pack | $9.99 | one-time |
| Ad-Free | $9.99 | one-time |
| loong Skin | $19.99 | one-time |
| Advanced Pack | $29.99 | one-time |

**What reviewers like**

- 🎮 Engaging tower defense gameplay mechanics
- 🔄 Regular game updates and new content additions
- 💰 Reasonable pricing for ad-skip pack
- 👥 Guild system adds social elements
- ⚡ Responsive developer compensation for issues

**What reviewers complain about**

- 💸 Extremely pay-to-win mechanics
- 🐢 Excessively slow progression and grinding
- 📺 Intrusive and excessive advertisements
- 🔗 Ads with no close button or skip option
- 💳 Billing discrepancies and failed purchases

**Reported bugs**

- Ads that cannot be closed or skipped
- Ads redirecting to external websites without exit option
- Game crashes after watching advertisements
- Server connection failures and offline status errors
- Purchased items and ad-skip packs not being delivered

**Requested features**

- Notifications for lab research completion
- Permanent speed increase rewards for watching ads
- Stackable ad-watch bonuses
- Game pause functionality
- Extended gold collection intervals (24 hours instead of 2)


### Mathopia

[App page](https://appshunter.io/ios/app/mathopia/id6752933659)

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 5k Gems | $2.99 | one-time |
| 15k Gems | $7.99 | one-time |
| 50k Gems | $23.99 | one-time |
| 100k Gems | $41.99 | one-time |


## Frequently asked questions

### Is Rush Defense free?

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

### Is Mathopia free?

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

### Do Rush Defense or Mathopia have ads?

Rush Defense shows ads; Mathopia does not.

### Which is updated more often, Rush Defense or Mathopia?

Rush Defense ships an update fortnightly, and Mathopia weekly. Most recently, Rush Defense was updated on October 30, 2026 and Mathopia on November 5, 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.*