# Idle Universe vs KOZMONAUT

The clearest difference is ratings volume: Idle Universe at 1.5K against KOZMONAUT's 6. Idle Universe also leads on review sentiment (65% vs 50%). KOZMONAUT's advantage is update cadence (every 4 days vs every 3 weeks) and rating (4.5 vs 4.3). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Idle Universe sells 7 one-off in-app purchases and KOZMONAUT sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

KOZMONAUT holds the better App Store score, 4.5 against 4.3. That said, the two scores are not equally well evidenced: Idle Universe has 1.5K ratings behind it against 6, so its average is the more settled of the two. Written reviews complicate that: 65% of Idle Universe's written reviews are positive against 50% of KOZMONAUT's, so the app with the better star average is not the one people write more warmly about.

Idle Universe ships an update every 3 weeks, KOZMONAUT every 4 days. The most recent releases landed on November 1, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Idle Universe | KOZMONAUT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (1.5K ratings)](https://appshunter.io/ios/app/idle-universe/id1195110094/reviews) | **[4.5 (6 ratings)](https://appshunter.io/ios/app/kozmonaut/id1489101856/reviews)** |
| Number of ratings | **1.5K** | 6 |
| Positive reviews | **65.2% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 299 MB | 62 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Dominik Stallmann](https://appshunter.io/developer/1195110093) | [Coast Media House LLC](https://appshunter.io/developer/1384165503) |

## What reviewers say

### Idle Universe

[App page](https://appshunter.io/ios/app/idle-universe/id1195110094)

Tap to gather matter and create interstellar objects, from particles to galaxies. Objects automatically generate more matter, allowing for endless universe expansion. Unlock divine powers, upgrade objects, and utilize special abilities to grow your cosmic creation.

**Highlights:** Create 31 interstellar objects, Unlock 24 Divine Powers, Upgrade objects with multiple options, Obtain Dark Matter for special abilities, Gain Antimatter via prestige for permanent upgrades, Compete on leaderboards, Earn daily rewards and achievements

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 250 Dark Matter | $3.99 | one-time |
| Double Antimatter Gains | $4.99 | one-time |
| +100% Transcendence Exp | $4.99 | one-time |
| Remove All Ads | $8.99 | one-time |
| 1000 Dark Matter | $9.99 | one-time |
| 2500 Dark Matter | $24.99 | one-time |
| 10000 Dark Matter | $69.99 | one-time |

**What reviewers like**

- 👍 Organized and easy to use
- 🚀 Efficient progression system
- 💡 Unique and engaging concept
- 🎨 Good graphics and visuals

**What reviewers complain about**

- 🐛 Bugs and crashes
- 🔋 Slow progress without watching ads
- 🤖 Forced Google account login
- 🔍 Unclear game mechanics

**Reported bugs**

- Prestige button not working
- Ads not providing expected rewards
- Frequent crashes and freezes
- Incorrect offline progress tracking

**Requested features**

- Offline progress tracking
- More prestige layers and upgrades
- Better optimization for larger screens
- Improved tutorial and explanations


### KOZMONAUT

[App page](https://appshunter.io/ios/app/kozmonaut/id1489101856)

Explore the universe, build a mining empire, and battle monsters in this incremental tapper game. Earn resources even when offline and accelerate growth through expeditions. Collect loot, complete missions, and compete on leaderboards.

**Highlights:** Build and upgrade mines for exponential resource gain, Tap to battle endless waves of monsters and bosses, Offline resource accumulation, Expeditions to accelerate growth, Daily missions and rotating vendor for rewards, Global leaderboards for competition, Cosmetic drops to customize character

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| KOZMIC PACK | $2.99 | one-time |


## Frequently asked questions

### Is Idle Universe free?

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

### Is KOZMONAUT free?

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

### Which has better reviews, Idle Universe or KOZMONAUT?

KOZMONAUT is rated higher. Idle Universe averages 4.3 out of 5 from 1.5K ratings, while KOZMONAUT averages 4.5 from 6 ratings.

### Do Idle Universe or KOZMONAUT have ads?

Both Idle Universe and KOZMONAUT show ads.

### Which is updated more often, Idle Universe or KOZMONAUT?

Idle Universe ships an update every 3 weeks, and KOZMONAUT every 4 days. Most recently, Idle Universe was updated on November 1, 2026 and KOZMONAUT on October 18, 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.*