# Melt and Fill vs Astro Builder

The clearest difference is update cadence: Melt and Fill at monthly against Astro Builder's every 11 months. Melt and Fill also leads on iOS requirement (13.0 vs 15.0). Astro Builder's advantage is rating (4.7 vs 4.4) and ratings volume (3.4K vs 613). On price, review sentiment, ads and in-app purchases there is nothing between them.

Both are free to download. Melt and Fill sells 18 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.

Astro Builder holds the better App Store score, 4.7 against 4.4. That said, the two scores are not equally well evidenced: Astro Builder has 3.4K ratings behind it against 613, so its average is the more settled of the two. Written reviews point the same way: 27% of Melt and Fill's written reviews are positive against 34% of Astro Builder's.

Melt and Fill ships an update monthly, Astro Builder every 11 months. Both last shipped on October 27, 2026.

## The numbers

| Metric | Melt and Fill | Astro Builder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (613 ratings)](https://appshunter.io/ios/app/melt-and-fill/id6465749961/reviews) | **[4.7 (3.4K ratings)](https://appshunter.io/ios/app/astro-builder/id6737761200/reviews)** |
| Number of ratings | 613 | **3.4K** |
| Positive reviews | 26.5% of reviews | **34.1% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Monthly** | Every 11 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 274 MB | 251 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Voodoo](https://appshunter.io/developer/714804730) | [Solid Games](https://appshunter.io/developer/1625798412) |

## What reviewers say

### Melt and Fill

[App page](https://appshunter.io/ios/app/melt-and-fill/id6465749961)

Engage in a satisfying melting and filling experience. Slice, cook, and chop various items to fill bottles and earn in-game profit. Upgrade your equipment to melt faster and unlock new substances.

**Highlights:** Melt various items, Slice, cook, and chop ingredients, Fill bottles for profit, Upgrade melting machine, Upgrade bottles, Unlock new substances

**Features:** macOS Compatibility

**In-app purchases (18)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Auto Sell | $0.99 | one-time |
| Speed Booster | $0.99 | one-time |
| Auto Add | $0.99 | one-time |
| Auto Tap | $0.99 | one-time |
| Coins Small Amount | $1.99 | one-time |
| Auto Tap | $1.99 | one-time |
| Auto Add | $1.99 | one-time |
| Auto Sell | $1.99 | one-time |
| Speed Booster | $1.99 | one-time |
| Coins Small Amount | $2.99 | one-time |
| Coins Medium Amount | $3.99 | one-time |
| Progression Pack | $4.99 | one-time |
| Coins High Amount | $6.99 | one-time |
| Starter Pack | $6.99 | one-time |
| Coins Medium Amount | $6.99 | one-time |
| Remove Ads | $7.99 | one-time |
| Coins High Amount | $9.99 | one-time |
| Starter Pack | $9.99 | one-time |

**What reviewers like**

- 🎮 Satisfying gameplay
- 🕰️ Good time-waster
- 🎨 Visually appealing

**What reviewers complain about**

- 🐛 Frequent glitches and bugs
- 💰 Inconsistent pricing
- 📺 Excessive ads
- 🔄 Progress resets on app close

**Reported bugs**

- Stuck/missing objects
- Knife/tool malfunctions
- Pricing issues after app close

**Requested features**

- More level variety
- Improved save/load functionality
- Better ad management


### 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 Melt and Fill free?

Melt and Fill 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, Melt and Fill or Astro Builder?

Astro Builder is rated higher. Melt and Fill averages 4.4 out of 5 from 613 ratings, while Astro Builder averages 4.7 from 3.4K ratings.

### Do Melt and Fill or Astro Builder have ads?

Both Melt and Fill and Astro Builder show ads.

### Which is updated more often, Melt and Fill or Astro Builder?

Melt and Fill ships an update monthly, and Astro Builder every 11 months. Most recently, Melt and Fill was updated on October 27, 2026 and Astro Builder on October 27, 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.*