# Deep Space vs Crystal Guard

The clearest difference is review sentiment: Crystal Guard at 100% against Deep Space's 50%. Crystal Guard also leads on update cadence (every 2 days vs every 23 months). Deep Space's advantage is rating (5.0 vs 3.0) and in-app purchases (none vs 10). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Crystal Guard sells 10 in-app purchases, starting at $4.99 per month. Deep Space asks for nothing beyond the download.

Deep Space holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews complicate that: 50% of Deep Space's written reviews are positive against 100% of Crystal Guard's, so the app with the better star average is not the one people write more warmly about.

Deep Space ships an update every 23 months, Crystal Guard every 2 days. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Deep Space | Crystal Guard |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/deep-space/id1465543147/reviews)** | [3.0 (1 ratings)](https://appshunter.io/ios/app/crystal-guard-diy-road/id6504703611/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 23 months | **Every 2 days** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 192 MB | 283 MB |
| Requires iOS | **10.0** | 11.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Wingjoy Games Co., Ltd](https://appshunter.io/developer/521104869) | [艳 王](https://appshunter.io/developer/1663396375) |

## What reviewers say

### Deep Space

[App page](https://appshunter.io/ios/app/deep-space/id1465543147)

Engage in thrilling air combat combined with strategic tower defense. Equip your aircraft with various weapons and strategically place them to achieve different combat effects. Simple touch controls allow for easy aircraft movement.

**Highlights:** Air combat gameplay, Tower defense strategy, Weapon customization, Strategic placement, Simple touch controls

**Features:** Vision Pro support

**In-app purchases:** none


### Crystal Guard

[App page](https://appshunter.io/ios/app/crystal-guard-diy-road/id6504703611)

Defend a fragile crystal from waves of monsters in this unique Roguelite tower defense game. Strategically build mazes with blocks and develop powerful turrets to resist attacks. Adapt your tactics to collect crystals and secure victory.

**Highlights:** Roguelite gameplay, Block puzzle maze creation, Strategic tower defense, Turret development, Unique art style, Casual puzzle elements

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove All Ads For 30 Days | $4.99 | per month |
| Newcomer pack | $0.99 | one-time |
| 10 advertising coupons | $1.99 | one-time |
| 30 advertising coupons | $3.99 | one-time |
| Turret pack | $3.99 | one-time |
| Turret upgrade pack | $5.99 | one-time |
| Golden battle pass | $6.99 | one-time |
| 3000 Diamonds | $7.99 | one-time |
| 70 advertising coupons | $7.99 | one-time |
| Remove advertisements | $19.99 | one-time |


## Frequently asked questions

### Is Deep Space free?

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

### Is Crystal Guard free?

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

### Which has better reviews, Deep Space or Crystal Guard?

Deep Space is rated higher. Deep Space averages 5.0 out of 5 from 2 ratings, while Crystal Guard averages 3.0 from 1 ratings.

### Do Deep Space or Crystal Guard have ads?

Both Deep Space and Crystal Guard show ads.

### Which is updated more often, Deep Space or Crystal Guard?

Deep Space ships an update every 23 months, and Crystal Guard every 2 days. Most recently, Deep Space was updated on November 3, 2026 and Crystal Guard on November 4, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*