# Ecosystem vs Cosmic Synthesis

The clearest difference is in-app purchases: Ecosystem at none against Cosmic Synthesis's 1. Ecosystem 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. Cosmic Synthesis sells 1 one-off in-app purchase. Ecosystem asks for nothing beyond the download.

Ecosystem ships an update every 8 days, Cosmic Synthesis weekly. The most recent releases landed on October 4, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Ecosystem | Cosmic Synthesis |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.8 (12 ratings)](https://appshunter.io/ios/app/cosmic-synthesis-idle-builder/id6756239498/reviews)** |
| Number of ratings | — | **12** |
| Positive reviews | — | 28.6% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 8 days | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Size | 465 MB | 150 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Romain Chauvire](https://appshunter.io/developer/1835141572) | [NETBYTE UG (haftungsbeschränkt)](https://appshunter.io/developer/1854412817) |

## What reviewers say

### Ecosystem

[App page](https://appshunter.io/ios/app/ecosystem-idle-evolution/id6751442620)

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

**In-app purchases:** none


### Cosmic Synthesis

[App page](https://appshunter.io/ios/app/cosmic-synthesis-idle-builder/id6756239498)

Build your own universe from atoms to galaxies in this idle-clicker adventure. Automate production, refine resources, and unlock cosmic milestones. The game adapts to both active strategists and idle players, offering a unique sci-fi experience.

**Highlights:** Tap to generate matter, Automate production chains, Refine resources into planets, Unlock over 50 cosmic milestones, Strategic talent tree, Prestige system for permanent upgrades, Offline progression

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $1.99 | one-time |


## Frequently asked questions

### Is Ecosystem free?

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

### Is Cosmic Synthesis free?

Cosmic Synthesis is free to download, with in-app purchases available.

### Do Ecosystem or Cosmic Synthesis have ads?

Cosmic Synthesis shows ads; Ecosystem does not.

### Which is updated more often, Ecosystem or Cosmic Synthesis?

Ecosystem ships an update every 8 days, and Cosmic Synthesis weekly. Most recently, Ecosystem was updated on October 4, 2026 and Cosmic Synthesis on October 15, 2026.

---

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