# Space Tower vs Space Blue

The clearest difference is in-app purchases: Space Blue at none against Space Tower's 10. Space Blue also leads on update cadence (daily vs every 5 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Space Tower sells 10 one-off in-app purchases. Space Blue asks for nothing beyond the download.

Space Tower ships an update every 5 weeks, Space Blue daily. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Space Tower | Space Blue |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (571 ratings)](https://appshunter.io/ios/app/space-tower-galaxy-tower-td/id1672563510/reviews)** | — |
| Number of ratings | **571** | — |
| Positive reviews | 40.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 5 weeks | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 190 MB | 47 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CYBERJOY LIMITED](https://appshunter.io/developer/1602455961) | [Eridani Melo](https://appshunter.io/developer/1602600741) |

## What reviewers say

### Space Tower

[App page](https://appshunter.io/ios/app/space-tower-galaxy-tower-td/id1672563510)

Command a galactic defense to protect your space tower from alien invaders. Strategically upgrade your tower's abilities and weapons to withstand relentless waves of enemies and defeat powerful bosses. Enjoy idle gameplay with ample rewards, even while offline.

**Highlights:** Idle tower defense gameplay, Strategic tower defense, Upgrade basic abilities, Activate powerful weapons, Unlock and improve tech abilities, Defend against alien attacks, Battle mighty bosses

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Newbie Pack | $2.99 | one-time |
| Chapter Pack | $2.99 | one-time |
| Chapter Pack | $4.99 | one-time |
| Piggy Bank | $4.99 | one-time |
| Tournament Pack 2 | $4.99 | one-time |
| VIP Pack | $9.99 | one-time |
| Chapter Pack 3 | $9.99 | one-time |
| Special Pack 3 | $9.99 | one-time |
| Month Card | $9.99 | one-time |
| Premium Resource Pack | $29.99 | one-time |

**What reviewers like**

- 🎮 Engaging and addictive gameplay mechanics
- ⬆️ Extensive upgrade and progression systems
- 🎨 Visually appealing design
- ⏱️ Good for casual play between other activities

**What reviewers complain about**

- 💰 Aggressive monetization and pay-to-win mechanics
- ⚡ Energy system limits gameplay
- 🐛 Data synchronization failures across devices
- 🔄 Repetitive grinding required
- ⏳ Excessively long research/upgrade timers

**Reported bugs**

- Game freezes and fails to load progress data
- Data not syncing between devices with same Apple ID
- Ad-free purchases requiring repurchase on new devices
- Tournament upgrade buffs not applying correctly
- Research timer displaying incorrect duration (30 minutes showing as 31 hours)

**Requested features**

- More game levels
- Additional weapons and enemy variety
- Restore previously available game formats (Galaxy Background, Flaming Eye)
- Remove or reduce energy system
- Improve gold generation rates


### Space Blue

[App page](https://appshunter.io/ios/app/space-blue/id6504717681)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Space Tower free?

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

### Is Space Blue free?

Space Blue is free to download, with no in-app purchases.

### Do Space Tower or Space Blue have ads?

Both Space Tower and Space Blue show ads.

### Which is updated more often, Space Tower or Space Blue?

Space Tower ships an update every 5 weeks, and Space Blue daily. Most recently, Space Tower was updated on November 3, 2026 and Space Blue on October 30, 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.*