# Battery Merge vs Astro Builder

The clearest difference is in-app purchases: Battery Merge at none against Astro Builder's 5. Battery Merge also leads on update cadence (every 4 days vs every 11 months) and iOS requirement (11.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Astro Builder sells 5 one-off in-app purchases. Battery Merge asks for nothing beyond the download.

Battery Merge ships an update every 4 days, Astro Builder every 11 months. The most recent releases landed on October 11, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Battery Merge | Astro Builder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (3.3K ratings)](https://appshunter.io/ios/app/astro-builder/id6737761200/reviews)** |
| Number of ratings | — | **3.3K** |
| Positive reviews | — | 34.1% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 4 days** | Every 11 months |
| Monetization | — | Free with in-app purchases |
| Size | 128 MB | 251 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Taninty Game Studio](https://appshunter.io/developer/983585874) | [Solid Games](https://appshunter.io/developer/1625798412) |

## What reviewers say

### Battery Merge

[App page](https://appshunter.io/ios/app/battery-merge/id6443937892)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 Battery Merge free?

Battery Merge is free to download, with no in-app purchases.

### Is Astro Builder free?

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

### Do Battery Merge or Astro Builder have ads?

Both Battery Merge and Astro Builder show ads.

### Which is updated more often, Battery Merge or Astro Builder?

Battery Merge ships an update every 4 days, and Astro Builder every 11 months. Most recently, Battery Merge was updated on October 11, 2026 and Astro Builder on October 19, 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.*