# Gravity One vs Idle Universe

The clearest difference is in-app purchases: Gravity One at none against Idle Universe's 7. Gravity One also leads on ads (none vs shown). Idle Universe's advantage is update cadence (every 3 weeks vs every 9 months) and iOS requirement (15.0 vs 18.0). On price and device support there is nothing between them.

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

Gravity One ships an update every 9 months, Idle Universe every 3 weeks. The most recent releases landed on October 2, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Gravity One | Idle Universe |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (1.5K ratings)](https://appshunter.io/ios/app/idle-universe/id1195110094/reviews)** |
| Number of ratings | — | **1.5K** |
| Positive reviews | — | 65.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 9 months | **Every 3 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 15 MB | 297 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Sami Salkosuo](https://appshunter.io/developer/820432278) | [Dominik Stallmann](https://appshunter.io/developer/1195110093) |

## What reviewers say

### Gravity One

[App page](https://appshunter.io/ios/app/gravity-one/id820432275)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Gravity One free?

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

### Is Idle Universe free?

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

### Do Gravity One or Idle Universe have ads?

Idle Universe shows ads; Gravity One does not.

### Which is updated more often, Gravity One or Idle Universe?

Gravity One ships an update every 9 months, and Idle Universe every 3 weeks. Most recently, Gravity One was updated on October 2, 2026 and Idle Universe on October 15, 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.*