# Idle Space Dynasty vs Astro Builder

Idle Space Dynasty and Astro Builder both sit at 4.6 stars, but that hides the real split: 75% of Idle Space Dynasty's written reviews are positive against 35% of Astro Builder's. Idle Space Dynasty also leads on ads (none vs shown) and update cadence (every 6 days vs every 11 months). Astro Builder's advantage is ratings volume (3.4K vs 56). On price, rating, in-app purchases and monetization model there is nothing between them.

Both are free to download. Idle Space Dynasty sells 6 one-off in-app purchases and Astro Builder sells 5 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.6 for Idle Space Dynasty against 4.7 for Astro Builder. That said, the two scores are not equally well evidenced: Astro Builder has 3.4K ratings behind it against 56, so its average is the more settled of the two. Written reviews are what separate them: 75% of Idle Space Dynasty's written reviews are positive against 35% of Astro Builder's.

Idle Space Dynasty ships an update every 6 days, Astro Builder every 11 months. The most recent releases landed on November 2, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Idle Space Dynasty | Astro Builder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (56 ratings)](https://appshunter.io/ios/app/idle-space-dynasty/id1325530121/reviews) | **[4.7 (3.4K ratings)](https://appshunter.io/ios/app/astro-builder/id6737761200/reviews)** |
| Number of ratings | 56 | **3.4K** |
| Positive reviews | **75.0% of reviews** | 34.9% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 6 days** | Every 11 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 245 MB | 251 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [axonic](https://appshunter.io/developer/481015819) | [Solid Games](https://appshunter.io/developer/1625798412) |

## What reviewers say

### Idle Space Dynasty

[App page](https://appshunter.io/ios/app/idle-space-dynasty/id1325530121)

Build factories on planets, establish trade routes, and discover new solar systems to become the first trillionaire. Earn resources even while offline, optimize your empire, and conquer deep space.

**Highlights:** Optimize factories for profit, Optimize spaceships for transport, Idle cash generation, Discover solar systems and planets, Destroy asteroids for resources, Offline play

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 300 SpaceCash | $1.99 | one-time |
| 800 SpaceCash | $3.99 | one-time |
| Add 1700 SpaceCash | $8.99 | one-time |
| 3600 SpaceCash | $17.99 | one-time |
| 9500 SpaceCash | $44.99 | one-time |
| 20000 SpaceCash | $89.99 | one-time |


### Astro Builder

[App page](https://appshunter.io/ios/app/astro-builder/id6737761200)

Build a sprawling space station in orbit with this idle construction game. Start with basic components and expand your facility by unlocking new equipment and generating resources. Discover and develop new areas as your station grows.

**Highlights:** Idle space station construction, Resource management, Unlock new equipment, Expand and develop areas, Space elevator material transport

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AD TICKETS 10 | $0.99 | one-time |
| AD TICKETS 25 | $1.99 | one-time |
| AD TICKETS 60 | $3.99 | one-time |
| Ad-free 7 day | $4.99 | one-time |
| Permanent ad-free! | $9.99 | one-time |

**What reviewers like**

- 🚀 Fun game concept
- 👍 Detailed space station building
- 💡 Customizable astronaut suits

**What reviewers complain about**

- 🐛 Buggy AI and builder behavior
- 🔇 Lack of sound and music
- 🔁 Repetitive and monotonous gameplay
- 🔒 Forced ads and limited free content
- ⏱️ Slow progress without watching ads

**Reported bugs**

- Builders getting stuck or ignoring resource needs
- Inconsistent behavior when collecting from processors
- Permanent worker upgrades not functioning properly

**Requested features**

- Ability to continue progress offline
- More varied level designs and challenges
- Autonomous builder behavior
- Background progress while app is closed


## Frequently asked questions

### Is Idle Space Dynasty free?

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

### Is Astro Builder free?

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

### Which has better reviews, Idle Space Dynasty or Astro Builder?

Astro Builder is rated higher. Idle Space Dynasty averages 4.6 out of 5 from 56 ratings, while Astro Builder averages 4.7 from 3.4K ratings.

### Do Idle Space Dynasty or Astro Builder have ads?

Astro Builder shows ads; Idle Space Dynasty does not.

### Which is updated more often, Idle Space Dynasty or Astro Builder?

Idle Space Dynasty ships an update every 6 days, and Astro Builder every 11 months. Most recently, Idle Space Dynasty was updated on November 2, 2026 and Astro Builder on November 4, 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.*