# Stack Attack!! vs Backpack Attack

The clearest difference is rating: Backpack Attack at 4.6 against Stack Attack!!'s 4.3. Backpack Attack also leads on update cadence (every 4 days vs every 2 weeks). On price, review sentiment, ratings volume and ads there is nothing between them.

Both are free to download. Stack Attack!! sells 19 one-off in-app purchases and Backpack Attack sells 20 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Backpack Attack holds the better App Store score, 4.6 against 4.3. Both are backed by a comparable volume of ratings — 403 and 144 respectively. Written reviews complicate that: 23% of Stack Attack!!'s written reviews are positive against 17% of Backpack Attack's, so the app with the better star average is not the one people write more warmly about.

Stack Attack!! ships an update every 2 weeks, Backpack Attack every 4 days. The most recent releases landed on August 19, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Stack Attack!! | Backpack Attack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (403 ratings)](https://appshunter.io/ios/app/stack-attack/id6566190313/reviews) | **[4.6 (144 ratings)](https://appshunter.io/ios/app/backpack-attack/id6714474754/reviews)** |
| Number of ratings | **403** | 144 |
| Positive reviews | **23.2% of reviews** | 17.4% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 weeks | **Every 4 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 247 MB | 226 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Voodoo](https://appshunter.io/developer/714804730) | [Tran Hai Dang](https://appshunter.io/developer/1770275611) |

## What reviewers say

### Stack Attack!!

[App page](https://appshunter.io/ios/app/stack-attack/id6566190313)

Engage in intense battles against waves of enemies, strategically demolishing their formations with powerful weapons. Upgrade your capabilities by selecting the best skills to protect the cube world from a malevolent hex invasion.

**Highlights:** Defeat enemy waves, Demolish enemy stacks, Upgrade skills, Save the cube world, Space invader gameplay

**Features:** macOS Compatibility

**In-app purchases (19)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gem Pack Small | $0.99 | one-time |
| Gold Pack Small | $0.99 | one-time |
| Starter Pack | $2.99 | one-time |
| No Ads | $2.99 | one-time |
| Gem Pack Medium | $4.99 | one-time |
| 2X Speed! | $4.99 | one-time |
| Gold Pack Medium | $4.99 | one-time |
| Skip'its Medium Pack | $5.99 | one-time |
| Gem Pack Large | $9.99 | one-time |
| Gold Pack Large | $9.99 | one-time |
| Premium Pass | $14.99 | one-time |
| Gem Pack XL | $19.99 | one-time |
| Skip'its Large Pack | $19.99 | one-time |
| Gold Pack XL | $19.99 | one-time |
| Diamond Hero | $29.99 | one-time |
| Gem Pack XXL | $49.99 | one-time |
| Gold Pack XXL | $49.99 | one-time |
| Gem Pack XXXL | $99.99 | one-time |
| Gold Pack XXXL | $99.99 | one-time |

**What reviewers like**

- 👍 Simple and fun gameplay
- 🚀 No ads or microtransactions
- 💡 Nice armor upgrade system

**What reviewers complain about**

- 🐛 Glitches and bugs, especially after updates
- 🐛 Progress and upgrades getting reset or lost
- 🐛 Levels becoming unplayable after a certain point

**Reported bugs**

- Enemies' health scaling with player's attack power
- Levels freezing or getting stuck at checkpoints
- Weapon and upgrade levels getting downgraded randomly

**Requested features**

- Mute sound effects option
- Better communication from developers about updates
- More content and stages to progress through


### Backpack Attack

[App page](https://appshunter.io/ios/app/backpack-attack/id6714474754)

Engage in an action-packed adventure blending run-and-gun combat with strategic weapon crafting and merging. Organize your backpack, evolve your arsenal, and conquer challenging levels to become the ultimate weapon master.

**Highlights:** Efficient backpack item arrangement, Weapon crafting and evolution, Strategic merging mechanics, Level progression and boss battles, Weapon upgrades and skill enhancement, Diverse and challenging levels

**Features:** macOS Compatibility

**In-app purchases (20)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Gem | $0.99 | one-time |
| Silver Keys | $0.99 | one-time |
| Remove Force Ads | $2.99 | one-time |
| Speed Up | $4.99 | one-time |
| Starter Pack | $4.99 | one-time |
| Special Attack | $4.99 | one-time |
| X2 Hp Forever | $4.99 | one-time |
| X2 Shield Forever | $4.99 | one-time |
| Commander Pack | $6.99 | one-time |
| X2 Game Speed | $7.99 | one-time |
| Super Promotion Pack | $8.99 | one-time |
| Special Packs | $9.99 | one-time |
| Remove All Ads | $9.99 | one-time |
| Hand of Gems | $9.99 | one-time |
| Silver Keys 2 | $9.99 | one-time |
| Remove All Ads | $14.99 | one-time |
| Golden Keys | $19.99 | one-time |
| Another Life | $19.99 | one-time |
| Barrel of Gems | $49.99 | one-time |
| House of Gems | $99.99 | one-time |

**What reviewers like**

- 👍 Awesome game
- 👍 Game good
- 👍 Character, Weapon, Theme Ok
- 👍 Fun game

**What reviewers complain about**

-  광고 Too many ads
- 💸 Scam for removing ads
- 🐛 Game freezes when unlocking characters
- 🐛 Ads not removed after purchase
- 🐛 In-game ads disrupt gameplay

**Reported bugs**

- Game freezes when unlocking second character
- Purchased ad removal not working
- Purchased items not delivered
- Character unlock progress stuck
- Game lag caused by ads

**Requested features**

- Fix character unlock bug
- Improve ad frequency
- More engaging storyline/lore
- Better weapon/inventory management


## Frequently asked questions

### Is Stack Attack!! free?

Stack Attack!! is free to download, with in-app purchases available.

### Is Backpack Attack free?

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

### Which has better reviews, Stack Attack!! or Backpack Attack?

Backpack Attack is rated higher. Stack Attack!! averages 4.3 out of 5 from 403 ratings, while Backpack Attack averages 4.6 from 144 ratings.

### Do Stack Attack!! or Backpack Attack have ads?

Both Stack Attack!! and Backpack Attack show ads.

### Which is updated more often, Stack Attack!! or Backpack Attack?

Stack Attack!! ships an update every 2 weeks, and Backpack Attack every 4 days. Most recently, Stack Attack!! was updated on August 19, 2026 and Backpack Attack on September 21, 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.*