# Mousebusters vs Parasite Days

The clearest difference is ratings volume: Mousebusters at 1.5K against Parasite Days's 227. Mousebusters also leads on iOS requirement (13.0 vs 15.0). On price, rating, review sentiment and update cadence there is nothing between them.

Both are free to download. Mousebusters sells 7 one-off in-app purchases and Parasite Days sells 4 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 — 4.8 for Mousebusters against 5.0 for Parasite Days. That said, the two scores are not equally well evidenced: Mousebusters has 1.5K ratings behind it against 227, so its average is the more settled of the two. Written reviews split almost evenly too, at 94% and 94% positive.

Mousebusters ships an update every 2 weeks, Parasite Days fortnightly. Both last shipped on October 29, 2026.

## The numbers

| Metric | Mousebusters | Parasite Days |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (1.5K ratings)](https://appshunter.io/ios/app/mousebusters/id1502065641/reviews) | **[5.0 (227 ratings)](https://appshunter.io/ios/app/parasite-days-survival-sim/id1521417111/reviews)** |
| Number of ratings | **1.5K** | 227 |
| Positive reviews | 93.6% of reviews | **94.4% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 2 weeks** | Fortnightly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 76 MB | 141 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 12+ |
| Developer | [Odencat Inc.](https://appshunter.io/developer/896494218) | [zxima.LLC](https://appshunter.io/developer/714594983) |

## What reviewers say

### Mousebusters

[App page](https://appshunter.io/ios/app/mousebusters/id1502065641)

Embark on a pixel art adventure to vanquish spectral entities plaguing an apartment. As a member of the Mouse Busters, you'll help your master clear out ghosts and save residents from emotional darkness. This casual horror game progresses through tapping, character interaction, and object examination.

**Highlights:** Pixel art graphics, Story progression by tapping, Character interaction, Object examination, Casual horror adventure, Ghost busting gameplay

**Features:** Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Bronze Support | $0.99 | one-time |
| Remove Ads | $2.99 | one-time |
| Silver Support | $2.99 | one-time |
| Extra Episode | $2.99 | one-time |
| Gold Support | $4.99 | one-time |
| Complete Package | $4.99 | one-time |
| Platinum Support | $9.99 | one-time |

**What reviewers like**

- 👍 Fun and entertaining gameplay
- 🎨 Cute pixel art style
- 📖 Engaging and emotional story
- 🎶 Great background music
- 🔍 Interesting characters and lore

**What reviewers complain about**

- 💰 Paywall for full game access
- ⏱️ Tedious coffee bean collection
- 🤖 Repetitive ghost-hunting gameplay

**Reported bugs**

- Audio glitches and cutouts
- Occasional crashes

**Requested features**

- More gameplay variety
- Multiple story endings
- Reduced coffee bean requirement


### Parasite Days

[App page](https://appshunter.io/ios/app/parasite-days-survival-sim/id1521417111)

Awaken with a strange creature on your arm in this unique adventure game. Decide whether to fight the parasite or succumb to its draining effects. Manage your health, discover food combos, and make choices that lead to multiple endings.

**Highlights:** Parasite-purging adventure, Health management, Food combo discovery, Simple controls, Multiple endings, Choice-driven narrative

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Laser Threader | $0.99 | one-time |
| Life Enforcer | $0.99 | one-time |
| Rewarded Ads Off | $1.99 | one-time |
| Donate | $2.99 | one-time |

**What reviewers like**

- 😭 Emotionally impactful story
- 💖 Adorable and charming characters (especially the parasite)
- 🤩 Highly addictive and engaging gameplay
- 💎 Multiple endings and replayability
- 🎨 Beautiful pixel art and charming design

**What reviewers complain about**

- 🐛 Repetitive gameplay elements
- 🗣️ Text can be hard to read
- ⏳ Long wait times for ads
- 😵 Overwhelming number of ads for some users
- 🤔 Some users find it difficult to unlock certain endings/flags

**Reported bugs**

- Cannot submit robot in mini-game, leading to evaluation of E
- Completed robot displayed on normal screen after bug
- Cannot submit robot in cooperation menu, leading to it being stuck in 'prohibited' state
- Bug where the robot is stuck on screen after the cooperation menu issue
- Cannot obtain 'Dropped too much!' flag even after dropping supplies multiple times

**Requested features**

- More endings
- New characters
- Russian language translation
- Add more dialogue for milestones (e.g., day 50, 100)
- New game + or more content to extend gameplay


## Frequently asked questions

### Is Mousebusters free?

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

### Is Parasite Days free?

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

### Which has better reviews, Mousebusters or Parasite Days?

Parasite Days is rated higher. Mousebusters averages 4.8 out of 5 from 1.5K ratings, while Parasite Days averages 5.0 from 227 ratings.

### Do Mousebusters or Parasite Days have ads?

Both Mousebusters and Parasite Days show ads.

### Which is updated more often, Mousebusters or Parasite Days?

Mousebusters ships an update every 2 weeks, and Parasite Days fortnightly. Most recently, Mousebusters was updated on October 29, 2026 and Parasite Days on October 29, 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.*