# Project Clean Earth vs Idle Space Force

Project Clean Earth and Idle Space Force both sit at 4.7 stars, but that hides the real split: 71% of Idle Space Force's written reviews are positive against 47% of Project Clean Earth's. Project Clean Earth's advantage is ratings volume (1.9K vs 547) and iOS requirement (15.0 vs 18). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. Project Clean Earth sells 14 one-off in-app purchases and Idle Space Force sells 8 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.7 for Project Clean Earth against 4.7 for Idle Space Force. Both are backed by a comparable volume of ratings — 1.9K and 547 respectively. Written reviews are what separate them: 47% of Project Clean Earth's written reviews are positive against 71% of Idle Space Force's.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on September 24, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Project Clean Earth | Idle Space Force |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (1.9K ratings)](https://appshunter.io/ios/app/project-clean-earth/id1604696394/reviews) | [4.7 (547 ratings)](https://appshunter.io/ios/app/idle-space-force/id1605194403/reviews) |
| Number of ratings | **1.9K** | 547 |
| Positive reviews | 47.2% of reviews | **71.3% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 401 MB | 136 MB |
| Requires iOS | **15.0** | 18 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 9+ |
| Developer | [1N1](https://appshunter.io/developer/1282816708) | [Fuse Games](https://appshunter.io/developer/1226258821) |

## What reviewers say

### Project Clean Earth

[App page](https://appshunter.io/ios/app/project-clean-earth/id1604696394)

Embark on a survival adventure in a retro pixel world. Cleanse a radiation-contaminated Earth of mutant creepers using "Bernard," mankind's last weapon. Enhance your abilities with a variety of weapons, drones, and artifacts to complete the Earth Clean Project.

**Highlights:** Retro pixel graphic apocalypse world, Sci-fi story and survival action, Strengthen character with weapons, drones, artifacts, Strategic weapon and drone combinations, Random artifacts and events for replayability, Discover mutant monster attack patterns, New stages and modes as you grow stronger

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

**In-app purchases (14)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Welcome Package | $2.99 | one-time |
| Monthly Premium | $3.99 | one-time |
| Intermediate Pack | $4.99 | one-time |
| Guerrilla Special Price | $4.99 | one-time |
| Ad-Free Package | $5.99 | one-time |
| Advanced Pack | $6.99 | one-time |
| Gun Package | $6.99 | one-time |
| Turret Package | $6.99 | one-time |
| Buff Package | $6.99 | one-time |
| Growth Fund Pack | $8.99 | one-time |
| Growth Fund Pack 2 | $8.99 | one-time |
| Minerals Pack | $10.99 | one-time |
| Mineral Pack2 | $12.99 | one-time |
| VIP Package | $12.99 | one-time |

**What reviewers like**

- 🎮 Fun gameplay
- 👍 Addictive and enjoyable
- 🚀 Smooth performance
- 🎨 Great visuals and art style

**What reviewers complain about**

- 🐛 In-app purchases not working
- 🔒 Lack of account sync between devices
- 🤯 Difficulty spike at later levels
- 🕰️ Excessive grinding required for progress

**Reported bugs**

- Purchased items not being delivered
- Crashes and freezes on certain devices
- Incorrect pricing and charges for in-app purchases

**Requested features**

- Multiplayer co-op mode
- More character customization options
- Improved balance and difficulty scaling
- Ability to quickly use stamina on beaten levels


### Idle Space Force

[App page](https://appshunter.io/ios/app/idle-space-force/id1605194403)

Command a retro spaceship in this incremental clicker game. Blast enemies, upgrade your ship, and explore planets to earn passive income. Enjoy classic shoot 'em up action with idle RPG mechanics.

**Highlights:** Incremental idle gameplay, Retro space shoot 'em up battles, Ship upgrades and prestige system, Offline income generation, Explore multiple unique worlds, Pixelated retro graphics

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Star Coin Currency x100 | $1.99 | one-time |
| Star Coin Currency x300 | $3.99 | one-time |
| Remove Ads | $6.99 | one-time |
| Prestige Pack | $7.99 | one-time |
| Starter Pack | $9.99 | one-time |
| Star Coin Currency x1000 | $10.99 | one-time |
| Star Coin Currency x2500 | $19.99 | one-time |
| Star Coin Currency x7500 | $49.99 | one-time |

**What reviewers like**

- 🚀 Great game with decent core loop
- 👍 No intrusive ads and reasonable IAP
- 🚀 Constant new updates
- 🚀 Engaging and fun gameplay
- 👍 No forced ads

**What reviewers complain about**

- 🐛 Inaccurate hit boxes for coins/fuel
- 🐛 Offline earnings issues
- 🐛 Crashes when trying to advance
- 🐛 Bugs and glitches
- ⏱️ Slow early game progression

**Reported bugs**

- Crashes when trying to advance to next planet
- Offline rewards not working properly
- Forced flashing screen from power-up

**Requested features**

- Loot falling towards the ship
- Seasonal item multipliers working on all items
- Visibility of loot from invisible enemies
- Hint system for clues
- Faster bullet speed


## Frequently asked questions

### Is Project Clean Earth free?

Project Clean Earth is free to download, with in-app purchases available.

### Is Idle Space Force free?

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

### Which has better reviews, Project Clean Earth or Idle Space Force?

Project Clean Earth and Idle Space Force are both rated 4.7 out of 5 on the App Store, from 1.9K and 547 ratings respectively.

### Do Project Clean Earth or Idle Space Force have ads?

Both Project Clean Earth and Idle Space Force show ads.

### Which is updated more often, Project Clean Earth or Idle Space Force?

Project Clean Earth ships an update every 3 weeks, and Idle Space Force every 3 weeks. Most recently, Project Clean Earth was updated on September 24, 2026 and Idle Space Force on September 22, 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.*