# Opp Ball vs Stack Attack!!

The clearest difference is rating: Opp Ball at 4.6 against Stack Attack!!'s 4.3. Opp Ball also leads on monetization model (ad-supported vs free with in-app purchases) and ratings volume (1.3K vs 403). Stack Attack!!'s advantage is review sentiment (23% vs 9%). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Opp Ball sells 8 one-off in-app purchases and Stack Attack!! sells 19 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Opp Ball holds the better App Store score, 4.6 against 4.3. Both are backed by a comparable volume of ratings — 1.3K and 403 respectively. Written reviews complicate that: 9% of Opp Ball's written reviews are positive against 23% of Stack Attack!!'s, so the app with the better star average is not the one people write more warmly about.

Opp Ball ships an update every 8 days, Stack Attack!! every 2 weeks. The most recent releases landed on October 6, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Opp Ball | Stack Attack!! |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (1.3K ratings)](https://appshunter.io/ios/app/opp-ball-physics-puzzle/id1463532329/reviews)** | [4.3 (403 ratings)](https://appshunter.io/ios/app/stack-attack/id6566190313/reviews) |
| Number of ratings | **1.3K** | 403 |
| Positive reviews | 9.2% of reviews | **23.2% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 8 days** | Every 2 weeks |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 217 MB | 247 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Shanghai Sanzhan Network Technology Co., Ltd.](https://appshunter.io/developer/1479025549) | [Voodoo](https://appshunter.io/developer/714804730) |

## What reviewers say

### Opp Ball

[App page](https://appshunter.io/ios/app/opp-ball-physics-puzzle/id1463532329)

Test your aim and timing by shooting balls into a bucket. Master the perfect shot to score points and advance.

**Highlights:** Aim and shoot balls, Score points, Bucket target, Timing challenges

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| STARTER PACK | $1.99 | one-time |
| 1,000 Game Coins | $1.99 | one-time |
| 5,000 Game Coins | $7.99 | one-time |
| Remove Ads | $9.99 | one-time |
| 10,000 Game Coins | $14.99 | one-time |
| 25,000 Game Coins | $29.99 | one-time |
| 50,000 Game Coins | $54.99 | one-time |
| 100,000 Game Coins | $99.99 | one-time |

**What reviewers like**

- ⭐ Fun and entertaining game
- 👍 Satisfying gameplay

**What reviewers complain about**

- 🤬 Excessive ads
- 🙄 Ad frequency disrupts gameplay
- 🚫 Racist content in event levels

**Reported bugs**

- Unable to 3-star level 65
- Compatibility issues with older devices

**Requested features**

- Option to remove ads
- More challenging levels


### 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


## Frequently asked questions

### Is Opp Ball free?

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

### Is Stack Attack!! free?

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

### Which has better reviews, Opp Ball or Stack Attack!!?

Opp Ball is rated higher. Opp Ball averages 4.6 out of 5 from 1.3K ratings, while Stack Attack!! averages 4.3 from 403 ratings.

### Do Opp Ball or Stack Attack!! have ads?

Both Opp Ball and Stack Attack!! show ads.

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

Opp Ball ships an update every 8 days, and Stack Attack!! every 2 weeks. Most recently, Opp Ball was updated on October 6, 2026 and Stack Attack!! on October 2, 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.*