# Cosmic Synthesis vs Idle Exploration

The clearest difference is ads: Idle Exploration at none against Cosmic Synthesis's shown. Idle Exploration also leads on rating (4.3 vs 4.0). Cosmic Synthesis's advantage is update cadence (weekly vs every 3 weeks). On price, review sentiment, ratings volume and in-app purchases there is nothing between them.

Both are free to download. Cosmic Synthesis sells 1 one-off in-app purchase and Idle Exploration sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Idle Exploration holds the better App Store score, 4.3 against 4.0. Both are backed by a comparable volume of ratings — 15 and 10 respectively. Written reviews complicate that: 29% of Cosmic Synthesis's written reviews are positive against 25% of Idle Exploration's, so the app with the better star average is not the one people write more warmly about.

Cosmic Synthesis ships an update weekly, Idle Exploration every 3 weeks. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Cosmic Synthesis | Idle Exploration |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (15 ratings)](https://appshunter.io/ios/app/cosmic-synthesis-idle-builder/id6756239498/reviews) | **[4.3 (10 ratings)](https://appshunter.io/ios/app/idle-exploration/id6761206594/reviews)** |
| Number of ratings | **15** | 10 |
| Positive reviews | **28.6% of reviews** | 25.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Every 3 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 161 MB | 111 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NETBYTE UG (haftungsbeschränkt)](https://appshunter.io/developer/1854412817) | [Benjamin Cerrone](https://appshunter.io/developer/1724658473) |

## What reviewers say

### 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 |


### Idle Exploration

[App page](https://appshunter.io/ios/app/idle-exploration/id6761206594)

Embark on a relaxed top-down RPG adventure where you passively gather resources, battle monsters, and enhance your character. Discover new zones, collect procedurally generated gear, and upgrade your abilities through a prestige system. Daily quests and achievements ensure continuous rewards.

**Highlights:** Passive resource gathering, Monster combat and loot drops, Procedurally generated gear, Zone exploration and discovery, Skill tree and character upgrades, Prestige system for permanent bonuses, Daily quests and achievements

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gems Starter Bundle | $0.99 | one-time |
| Small Gem Pack | $1.99 | one-time |
| Extra Slots | $2.99 | one-time |
| Auto Claim Quests | $2.99 | one-time |
| Auto Open Chests | $4.99 | one-time |
| Double Resources | $4.99 | one-time |
| Starter Bundle | $5.99 | one-time |
| Large Gem Pack | $9.99 | one-time |
| Mega Bundle | $14.99 | one-time |
| Extra Large Gem Pack | $24.99 | one-time |


## Frequently asked questions

### Is Cosmic Synthesis free?

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

### Is Idle Exploration free?

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

### Which has better reviews, Cosmic Synthesis or Idle Exploration?

Idle Exploration is rated higher. Cosmic Synthesis averages 4.0 out of 5 from 15 ratings, while Idle Exploration averages 4.3 from 10 ratings.

### Do Cosmic Synthesis or Idle Exploration have ads?

Cosmic Synthesis shows ads; Idle Exploration does not.

### Which is updated more often, Cosmic Synthesis or Idle Exploration?

Cosmic Synthesis ships an update weekly, and Idle Exploration every 3 weeks. Most recently, Cosmic Synthesis was updated on October 25, 2026 and Idle Exploration on October 31, 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.*