# neoDefense vs STEM Defense

The clearest difference is in-app purchases: STEM Defense at none against neoDefense's 5. STEM Defense also leads on update cadence (every 4 days vs every 2 months) and device support (4 vs 2). neoDefense's advantage is price ($1.99 vs $6.99) and iOS requirement (9.0 vs 15.0). On ads there is nothing between them.

neoDefense costs $1.99 and STEM Defense $6.99 up front. neoDefense sells 5 one-off in-app purchases. STEM Defense asks for nothing beyond the download.

neoDefense ships an update every 2 months, STEM Defense every 4 days. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | neoDefense | STEM Defense |
| --- | --- | --- |
| Price | **$1.99** | $6.99 |
| Rating | **[4.7 (547 ratings)](https://appshunter.io/ios/app/neodefense-tower-defense/id1240750175/reviews)** | — |
| Number of ratings | **547** | — |
| Positive reviews | 87.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 156 MB | 412 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 9+ | 9+ |
| Developer | [SON GIL](https://appshunter.io/developer/544253299) | [Andrea Carlomaria Sertorio](https://appshunter.io/developer/1465623599) |

## What reviewers say

### neoDefense

[App page](https://appshunter.io/ios/app/neodefense-tower-defense/id1240750175)

Defend a sprout of new life from invading creeps by building and upgrading your fortress. Strategize with various weapons to overcome challenging missions and defeat powerful bosses. Enjoy mind-boggling graphics and thrilling sound effects in this unique tower defense experience.

**Highlights:** Build and upgrade fortress, Over 2,500 enemy waves, 99 challenging missions, 5 upgradable weapons, Boss battles, Stunning vector graphics, Thrilling sound effects

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock & Play Gamma Sector | $0.99 | one-time |
| Unlock & Play Delta Sector | $0.99 | one-time |
| Unlock & Play Epsilon Sector | $0.99 | one-time |
| Unlock & Play Zeta Sector | $0.99 | one-time |
| Unlock & Play Eta Sector | $0.99 | one-time |

**What reviewers like**

- 🚀 Simple yet challenging
- 👍 Great graphics and animations
- 🚀 Addictive gameplay
- 👍 No ads or in-app purchases
- 👍 Excellent tower defense experience

**What reviewers complain about**

- 🐛 Occasional bugs and crashes
- 🔧 Lack of new levels/updates
- 💰 Paid level packs can get expensive

**Reported bugs**

- Impossible to complete certain levels
- Compatibility issues on some devices
- Boost tower not available as advertised

**Requested features**

- More levels and content updates
- Option to reset levels
- Ability to save progress across devices
- Difficulty settings or modes
- More tower/weapon variety


### STEM Defense

[App page](https://appshunter.io/ios/app/stem-defense/id6502572873)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is neoDefense free?

neoDefense costs $1.99, and also offers in-app purchases.

### Is STEM Defense free?

STEM Defense costs $6.99, with no in-app purchases.

### Do neoDefense or STEM Defense have ads?

Neither neoDefense nor STEM Defense shows ads.

### Which is updated more often, neoDefense or STEM Defense?

neoDefense ships an update every 2 months, and STEM Defense every 4 days. Most recently, neoDefense was updated on October 26, 2026 and STEM Defense on October 27, 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.*