# Idle Universe vs Spark

The clearest difference is rating: Spark at 4.8 against Idle Universe's 4.3. Spark also leads on in-app purchases (none vs 7) and ads (none vs shown). Idle Universe's advantage is ratings volume (1.5K vs 233). On price, update cadence, monetization model and device support there is nothing between them.

Both are free to download. Idle Universe sells 7 one-off in-app purchases. Spark asks for nothing beyond the download.

Spark holds the better App Store score, 4.8 against 4.3. That said, the two scores are not equally well evidenced: Idle Universe has 1.5K ratings behind it against 233, so its average is the more settled of the two. Written reviews point the same way: 65% of Idle Universe's written reviews are positive against 94% of Spark's.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 20, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Idle Universe | Spark |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (1.5K ratings)](https://appshunter.io/ios/app/idle-universe/id1195110094/reviews) | **[4.8 (233 ratings)](https://appshunter.io/ios/app/spark-idle-evolution/id1437753286/reviews)** |
| Number of ratings | **1.5K** | 233 |
| Positive reviews | 65.2% of reviews | **94.3% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 297 MB | 75 MB |
| Requires iOS | 15.0 | **8.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Dominik Stallmann](https://appshunter.io/developer/1195110093) | [Deuski Games Limited Liability Company](https://appshunter.io/developer/1437753284) |

## 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


### Spark

[App page](https://appshunter.io/ios/app/spark-idle-evolution/id1437753286)

Guide the evolution of the cosmos as an ethereal Spark of Life. Assimilate raw materials and influence cosmic development through incremental gameplay. Unlock resources, progress through story elements, and utilize a prestige mechanic for faster advancement.

**Highlights:** Multiple unlockable and upgradeable resources, Story elements that unfold with progress, Prestige mechanic for accelerated progression, Altar of Knowledge for powerful upgrades, Intuitive UI with organic learning, Optional ads for in-game bonuses

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Addictive gameplay
- 👍 Enjoyable idle game
- 👍 Good pacing
- 👍 Interesting story
- 👍 Relaxing experience

**What reviewers complain about**

- 🐢 Slow progression at times
- 🤔 UI could use work
- 🤷 No visuals change
- ⏳ May take forever to progress

**Reported bugs**

- Ad not loading
- Game broke (production NaN, destruction bonus INF)

**Requested features**

- More updates
- Continue the story
- Add more evolution upgrades
- Add something at the end (e.g., restart with multiplier)
- Pay to have 2X multiplier forever


## Frequently asked questions

### Is Idle Universe free?

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

### Is Spark free?

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

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

Spark is rated higher. Idle Universe averages 4.3 out of 5 from 1.5K ratings, while Spark averages 4.8 from 233 ratings.

### Do Idle Universe or Spark have ads?

Idle Universe shows ads; Spark does not.

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

Idle Universe ships an update every 3 weeks, and Spark every 3 weeks. Most recently, Idle Universe was updated on October 20, 2026 and Spark on October 18, 2026.

---

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