# Space Tower vs Loop

The clearest difference is rating: Space Tower at 4.8 against Loop's 4.1. Space Tower also leads on ratings volume (571 vs 8) and iOS requirement (13.0 vs 15.1). Loop's advantage is ads (none vs shown) and update cadence (every 3 days vs every 5 weeks). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. Space Tower sells 21 one-off in-app purchases and Loop sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Space Tower holds the better App Store score, 4.8 against 4.1. That said, the two scores are not equally well evidenced: Space Tower has 571 ratings behind it against 8, so its average is the more settled of the two. Written reviews complicate that: 40% of Space Tower's written reviews are positive against 67% of Loop's, so the app with the better star average is not the one people write more warmly about.

Space Tower ships an update every 5 weeks, Loop every 3 days. The most recent releases landed on October 23, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Space Tower | Loop |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (571 ratings)](https://appshunter.io/ios/app/space-tower-galaxy-tower-td/id1672563510/reviews)** | [4.1 (8 ratings)](https://appshunter.io/ios/app/loop-brain-puzzle/id6476114211/reviews) |
| Number of ratings | **571** | 8 |
| Positive reviews | 40.0% of reviews | **66.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 5 weeks | **Every 3 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 190 MB | 40 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CYBERJOY LIMITED](https://appshunter.io/developer/1602455961) | [Chain1 OU](https://appshunter.io/developer/1725863864) |

## 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 (21)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Newbie Pack | $2.99 | one-time |
| Chapter Pack | $2.99 | one-time |
| Special Pack 1 | $2.99 | one-time |
| Tournament Pack 1 | $2.99 | one-time |
| Pouch Of Diamonds | $4.99 | one-time |
| Chapter Pack | $4.99 | one-time |
| Special Pack 2 | $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 |
| Tournament Pack 3 | $9.99 | one-time |
| Original Price Price 10.99 | $10.99 | one-time |
| Resource Pack | $14.99 | one-time |
| Original Price Price 17.99 | $17.99 | one-time |
| Special Pack 4 | $19.99 | one-time |
| Tournament Pack 4 | $19.99 | one-time |
| Premium Resource Pack | $29.99 | one-time |
| Original Price Price 79.99 | $79.99 | 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


### Loop

[App page](https://appshunter.io/ios/app/loop-brain-puzzle/id6476114211)

A strategy puzzle game that challenges your logical thinking and problem-solving skills. Navigate grid-based levels, use queue boxes with action items, and master looping logic to collect all points and avoid infinite loops. Enjoy a mental workout with progressive difficulty and creative solutions.

**Highlights:** Grid-based puzzles, Queue box mechanic, Looping logic action, Varied levels with increasing complexity, Points collection challenges, Ad-free gameplay, Offline play

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 15 Gold Nuggets | $0.99 | one-time |
| Unlock All Levels | $2.99 | one-time |
| 75 Gold Nuggets | $3.99 | one-time |
| 300 Gold Nuggets | $9.99 | one-time |


## Frequently asked questions

### Is Space Tower free?

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

### Is Loop free?

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

### Which has better reviews, Space Tower or Loop?

Space Tower is rated higher. Space Tower averages 4.8 out of 5 from 571 ratings, while Loop averages 4.1 from 8 ratings.

### Do Space Tower or Loop have ads?

Space Tower shows ads; Loop does not.

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

Space Tower ships an update every 5 weeks, and Loop every 3 days. Most recently, Space Tower was updated on October 23, 2026 and Loop on October 12, 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.*