# Bacterias vs Rumble Bag

The clearest difference is rating: Rumble Bag at 4.8 against Bacterias's 3.8. Rumble Bag also leads on update cadence (every 8 days vs every 3 months) and ratings volume (4.4K vs 205). Bacterias's advantage is in-app purchases (none vs 22). On price, review sentiment, ads and monetization model there is nothing between them.

Both are free to download. Rumble Bag sells 22 in-app purchases, starting at $4.99 per 7 days. Bacterias asks for nothing beyond the download.

Rumble Bag holds the better App Store score, 4.8 against 3.8. That said, the two scores are not equally well evidenced: Rumble Bag has 4.4K ratings behind it against 205, so its average is the more settled of the two. Written reviews complicate that: 40% of Bacterias's written reviews are positive against 37% of Rumble Bag's, so the app with the better star average is not the one people write more warmly about.

Bacterias ships an update every 3 months, Rumble Bag every 8 days. The most recent releases landed on September 24, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | Bacterias | Rumble Bag |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (205 ratings)](https://appshunter.io/ios/app/bacterias/id1672033845/reviews) | **[4.8 (4.4K ratings)](https://appshunter.io/ios/app/rumble-bag-backpack-battle/id6547851442/reviews)** |
| Number of ratings | 205 | **4.4K** |
| Positive reviews | **40.0% of reviews** | 37.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 3 months | **Every 8 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 241 MB | 311 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Yso Corp](https://appshunter.io/developer/659815325) | [HappyTapLand Technology Co., Ltd.](https://appshunter.io/developer/1737996732) |

## What reviewers say

### Bacterias

[App page](https://appshunter.io/ios/app/bacterias/id1672033845)

Create unique monsters by injecting bacteria into creatures. Discover new species and expand your collection of bizarre beings. A simple yet engaging game for those who enjoy creature creation and collection.

**Highlights:** Inject bacteria into creatures, Create unique monsters, Discover new species, Collect monsters

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

**In-app purchases:** none

**What reviewers like**

- 👍 Fun and creative game
- 👍 Original game concept
- 👍 Good for kids
- 👍 Engaging gameplay
- 👍 Interesting fight sequence

**What reviewers complain about**

- ❌ Excessive ads
- ❌ Frequent ads
- ❌ Ads interrupt gameplay
- ❌ Glitchy gameplay
- ❌ Game lags significantly

**Reported bugs**

- Monster gets too big in battle
- Monster falls through the ground
- Game lags heavily
- Game won't let users play
- Too many glitches

**Requested features**

- Add more animals (lion, elephant, zebra)
- Add decorated cages for monsters
- Add a battlefield to challenge other people
- Add more DNA
- Add more money to spend


### Rumble Bag

[App page](https://appshunter.io/ios/app/rumble-bag-backpack-battle/id6547851442)

Strategize and fill your backpack with powerful heroes and weapons to battle endless waves of monsters. This roguelike RPG offers unique skill combinations and strategic depth for a fun, casual gaming experience.

**Highlights:** Summon and merge dozens of heroes, Battle endless waves of monsters, Unique roguelike skill combinations, Strategic backpack management, Casual and fun gameplay

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

**In-app purchases (22)**

| Purchase | Price | Billing |
| --- | --- | --- |
| weeklycard_subscription_ios | $4.99 | per 7 days |
| monthlycard_subscriptiond_ios | $8.99 | per month |
| grothfund001_ios | $1.99 | one-time |
| pack002_ios | $1.99 | one-time |
| grothfund002_ios | $1.99 | one-time |
| grothfund003_ios | $1.99 | one-time |
| diamonds001_ios | $1.99 | one-time |
| grothfund004_ios | $2.99 | one-time |
| grothfund005_ios | $2.99 | one-time |
| grothfund007_ios | $2.99 | one-time |
| grothfund006_ios | $2.99 | one-time |
| grothfund009_ios | $2.99 | one-time |
| grothfund008_ios | $2.99 | one-time |
| grothfund010_ios | $2.99 | one-time |
| pack003_ios | $4.99 | one-time |
| diamonds002_ios | $4.99 | one-time |
| vipcard_ios | $9.99 | one-time |
| pack004_ios | $9.99 | one-time |
| pack001_ios | $9.99 | one-time |
| pack005_ios | $19.99 | one-time |
| diamonds003_ios | $19.99 | one-time |
| pack006_ios | $29.99 | one-time |

**What reviewers like**

- 👍 Good game mechanics
- 🚀 Fun and engaging gameplay
- 💡 Unique weapon merging concept

**What reviewers complain about**

- 🔍 Excessive use of ads for progression
- 🔒 Limited bag space without watching ads
- 🐛 Bugs and stability issues
- 🔋 Offline play limitations

**Reported bugs**

- Levels not progressing after completion
- Freezing and crashing on some devices
- Reward collection issues (e.g., Day 7 reward)

**Requested features**

- Offline progression without ads
- More weapon variety and customization
- Improved level design and difficulty balance
- Ability to save progress across sessions


## Frequently asked questions

### Is Bacterias free?

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

### Is Rumble Bag free?

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

### Which has better reviews, Bacterias or Rumble Bag?

Rumble Bag is rated higher. Bacterias averages 3.8 out of 5 from 205 ratings, while Rumble Bag averages 4.8 from 4.4K ratings.

### Do Bacterias or Rumble Bag have ads?

Both Bacterias and Rumble Bag show ads.

### Which is updated more often, Bacterias or Rumble Bag?

Bacterias ships an update every 3 months, and Rumble Bag every 8 days. Most recently, Bacterias was updated on September 24, 2026 and Rumble Bag on September 26, 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.*