# Grow Castle! vs Orion Singularity

The clearest difference is in-app purchases: Orion Singularity at none against Grow Castle!'s 10. Orion Singularity also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Grow Castle! sells 10 one-off in-app purchases. Orion Singularity asks for nothing beyond the download.

Grow Castle! ships an update every 5 days, Orion Singularity every 10 days. The most recent releases landed on October 24, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Grow Castle! | Orion Singularity |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2.2K ratings)](https://appshunter.io/ios/app/grow-castle/id1133478462/reviews)** | — |
| Number of ratings | **2.2K** | — |
| Positive reviews | 76.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 5 days** | Every 10 days |
| Monetization | Free with in-app purchases | — |
| Size | 122 MB | 59 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple TV |
| Age rating | 12+ | 4+ |
| Developer | [YONG OK PARK](https://appshunter.io/developer/581876748) | [Torsten Schiefen](https://appshunter.io/developer/1586305770) |

## What reviewers say

### Grow Castle!

[App page](https://appshunter.io/ios/app/grow-castle/id1133478462)

Defend your castle from waves of enemies by strategically placing heroes and archers. Upgrade your defenses and recruit over 80 unique heroes, each with special skills, to create powerful combinations and climb the global rankings.

**Highlights:** Castle defense gameplay, Hero and archer placement, Hero skill system, Strategic hero mounting (up to 9), Tower and archer upgrades, Global ranking system

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gold | $2.99 | one-time |
| Crystal | $2.99 | one-time |
| Gold | $4.99 | one-time |
| Crystal | $4.99 | one-time |
| Golden Horn | $4.99 | one-time |
| Auto Battle | $4.99 | one-time |
| Item Box | $4.99 | one-time |
| Gold | $9.99 | one-time |
| Crystal | $9.99 | one-time |
| Hero Slot | $9.99 | one-time |

**What reviewers like**

- 👍 Fun and addictive gameplay
- 🚀 Offline playability
- 💎 Good free-to-play model with optional purchases
- 🕹 Simple yet engaging tower defense mechanics
- 🔥 Satisfying progression and character upgrades

**What reviewers complain about**

- 🐛 Occasional bugs and glitches
- 🕰 Slow progression without paying
- 🔍 Lack of in-depth tutorials
- 🌐 Connectivity issues with online features
- 🎨 Outdated or suboptimal UI on newer devices

**Reported bugs**

- Inability to save or load game progress
- Frequent crashes when accessing the world map
- Disappearing items and lost progress after updates
- Unreliable auto-battle and offline earnings features

**Requested features**

- Add more heroes and towers
- Implement a PvP mode for player-vs-player battles
- Introduce more diverse enemy types and boss battles
- Allow players to create and manage their own guilds
- Improve offline earnings and afk progression


### Orion Singularity

[App page](https://appshunter.io/ios/app/orion-singularity/id6799984379)

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

**In-app purchases:** none


## Frequently asked questions

### Is Grow Castle! free?

Grow Castle! is free to download, with in-app purchases available.

### Is Orion Singularity free?

Orion Singularity is free to download, with no in-app purchases.

### Do Grow Castle! or Orion Singularity have ads?

Grow Castle! shows ads; Orion Singularity does not.

### Which is updated more often, Grow Castle! or Orion Singularity?

Grow Castle! ships an update every 5 days, and Orion Singularity every 10 days. Most recently, Grow Castle! was updated on October 24, 2026 and Orion Singularity on October 16, 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.*