# Human Devolution vs Project Clean Earth

The clearest difference is review sentiment: Human Devolution at 100% against Project Clean Earth's 47%. Human Devolution also leads on in-app purchases (none vs 16) and ads (none vs shown). Project Clean Earth's advantage is price (Free vs $0.99) and update cadence (every 3 weeks vs every 38 months). On device support there is nothing between them.

Project Clean Earth is free to download; Human Devolution costs $0.99 up front. Project Clean Earth sells 14 one-off in-app purchases. Human Devolution asks for nothing beyond the download.

Human Devolution ships an update every 38 months, Project Clean Earth every 3 weeks. The most recent releases landed on August 22, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Human Devolution | Project Clean Earth |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[4.7 (1.9K ratings)](https://appshunter.io/ios/app/project-clean-earth/id1604696394/reviews)** |
| Number of ratings | — | **1.9K** |
| Positive reviews | **100.0% of reviews** | 47.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 38 months | **Every 3 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 2 MB | 401 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [NagisaWorks, K.K.](https://appshunter.io/developer/295069630) | [1N1](https://appshunter.io/developer/1282816708) |

## What reviewers say

### Human Devolution

[App page](https://appshunter.io/ios/app/human-devolution/id296201403)

Test your memory and reaction time with this simple yet challenging game. Numbers appear in sequence, and your goal is to tap them in the correct order. Compete against your own scores and see if you can outperform a chimpanzee's memory.

**Highlights:** Sequential number tapping, Memory challenge, Reaction time test, Simple game rules, Score comparison

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Human Devolution free?

Human Devolution costs $0.99, with no in-app purchases.

### Is Project Clean Earth free?

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

### Do Human Devolution or Project Clean Earth have ads?

Project Clean Earth shows ads; Human Devolution does not.

### Which is updated more often, Human Devolution or Project Clean Earth?

Human Devolution ships an update every 38 months, and Project Clean Earth every 3 weeks. Most recently, Human Devolution was updated on August 22, 2026 and Project Clean Earth on September 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.*