# Idle Drops vs Cosmic Synthesis

The clearest difference is review sentiment: Idle Drops at 62% against Cosmic Synthesis's 29%. Idle Drops also leads on rating (4.3 vs 4.0) and ratings volume (813 vs 15). On price, update cadence, ads and in-app purchases there is nothing between them.

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

Idle Drops holds the better App Store score, 4.3 against 4.0. That said, the two scores are not equally well evidenced: Idle Drops has 813 ratings behind it against 15, so its average is the more settled of the two. Written reviews point the same way: 62% of Idle Drops's written reviews are positive against 29% of Cosmic Synthesis's.

Idle Drops ships an update every 9 days, Cosmic Synthesis weekly. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Idle Drops | Cosmic Synthesis |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (813 ratings)](https://appshunter.io/ios/app/idle-drops/id1362072943/reviews)** | [4.0 (15 ratings)](https://appshunter.io/ios/app/cosmic-synthesis-idle-builder/id6756239498/reviews) |
| Number of ratings | **813** | 15 |
| Positive reviews | **62.1% of reviews** | 28.6% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 9 days | **Weekly** |
| Monetization | Freemium | Free with in-app purchases |
| Size | 259 MB | 161 MB |
| Requires iOS | 16.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Studio Rouleau Inc](https://appshunter.io/developer/933957878) | [NETBYTE UG (haftungsbeschränkt)](https://appshunter.io/developer/1854412817) |

## What reviewers say

### Idle Drops

[App page](https://appshunter.io/ios/app/idle-drops/id1362072943)

Tap the screen to drop balls into slots and grow your in-game fortune. Upgrade drops to earn more money and boost balls to unlock new levels and story elements. Enjoy an idle clicker experience with strategic upgrades.

**Highlights:** Tap to drop balls, Upgrade drops for more earnings, Boost balls for new levels, Unlock story elements, Collect all drops

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 10 Diamonds | $0.99 | one-time |
| Dragon Drop | $0.99 | one-time |
| Ad-Free Collect x2 | $2.99 | one-time |
| Remove Ads | $2.99 | one-time |
| Ad-Free Drops x2 and Multi x2 | $2.99 | one-time |
| 55 Diamonds | $4.99 | one-time |
| Mega Pack Remove Ads | $6.99 | one-time |
| Mega Pack | $6.99 | one-time |
| 120 Diamonds | $9.99 | one-time |
| 250 Diamonds | $19.99 | one-time |

**What reviewers like**

- 👍 Relaxing gameplay
- 🚀 Addictive experience
- 💡 Interesting story/lore
- 🎨 Great visuals and music

**What reviewers complain about**

- 🔍 Frequent ads
- 🐛 Bugs and crashes
- 🔋 Progress loss issues
- 📊 Slow progression at higher levels

**Reported bugs**

- Ads causing game freezes
- Losing progress after prestiging
- Inconsistent ad reward functionality

**Requested features**

- Add more level variety
- Improve ad implementation
- Implement cloud save/sync
- Expand on the story/lore


### 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 Idle Drops free?

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

### Is Cosmic Synthesis free?

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

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

Idle Drops is rated higher. Idle Drops averages 4.3 out of 5 from 813 ratings, while Cosmic Synthesis averages 4.0 from 15 ratings.

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

Both Idle Drops and Cosmic Synthesis show ads.

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

Idle Drops ships an update every 9 days, and Cosmic Synthesis weekly. Most recently, Idle Drops was updated on November 2, 2026 and Cosmic Synthesis on October 30, 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.*