# Flippy Knife vs Stack Islands

The clearest difference is rating: Flippy Knife at 4.6 against Stack Islands's 2.5. Flippy Knife also leads on ratings volume (36K vs 2). Stack Islands's advantage is ads (none vs shown) and iOS requirement (12.0 vs 15.2). On price, review sentiment, update cadence and in-app purchases there is nothing between them.

Both are free to download. Flippy Knife sells 12 in-app purchases, starting at $2.99 per 7 days and Stack Islands sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Flippy Knife holds the better App Store score, 4.6 against 2.5. That said, the two scores are not equally well evidenced: Flippy Knife has 36K ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 73% of Flippy Knife's written reviews are positive against 80% of Stack Islands's, so the app with the better star average is not the one people write more warmly about.

Flippy Knife ships an update every 5 weeks, Stack Islands every 2 months. The most recent releases landed on October 15, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Flippy Knife | Stack Islands |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (36K ratings)](https://appshunter.io/ios/app/flippy-knife-throw-spin-hit/id1208359453/reviews)** | [2.5 (2 ratings)](https://appshunter.io/ios/app/stack-islands/id1407146596/reviews) |
| Number of ratings | **36K** | 2 |
| Positive reviews | 72.6% of reviews | **80.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 272 MB | 145 MB |
| Requires iOS | 15.2 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BERESNEV s.r.o.](https://appshunter.io/developer/1501867783) | [Dean Longmore](https://appshunter.io/developer/984963696) |

## What reviewers say

### Flippy Knife

[App page](https://appshunter.io/ios/app/flippy-knife-throw-spin-hit/id1208359453)

Master the art of knife flipping and throwing in this addictive 3D game. Perform combos, hit targets across diverse locations, and collect a vast arsenal of blades. It's a thrilling challenge for those who enjoy precision and risk-taking.

**Highlights:** Physics-based realistic knives, Over 120 unique blades, 7 different game modes, Awesome graphics, Award badges, Unique game mechanics

**Features:** Vision Pro support

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Membership (1 week) | $2.99 | per 7 days |
| PROFESSIONAL CLUB MEMBERSHIP | $3.99 | per 7 days |
| Fantasy Sword | $0.99 | one-time |
| 6 Simple Knives | $0.99 | one-time |
| 11 Knife Makers' Blades | $0.99 | one-time |
| 2 Cold & 2 Hot Swords | $0.99 | one-time |
| Bad Laser | $0.99 | one-time |
| Medium Pack of Coins | $0.99 | one-time |
| 12 Gift knives | $0.99 | one-time |
| BOOM! missiles | $0.99 | one-time |
| Remove ADS | $3.99 | one-time |
| Self aiming knife | $4.99 | one-time |

**What reviewers like**

- 🎮 Fun and addictive gameplay
- 🔍 Wide variety of knives with unique characteristics
- 🎨 Great visuals and animations
- 💰 Reasonable monetization model

**What reviewers complain about**

- 📺 Excessive ads and ad-related issues
- 🐛 Bugs and glitches affecting gameplay
- 🔁 Repetitive and lacking in long-term content
- 🔒 Difficulty restoring progress after reinstall

**Reported bugs**

- Ads getting stuck or not loading properly
- Invisible walls and other physics-related issues
- Account data not syncing or being lost after reinstall
- Gameplay freezes or crashes on certain devices

**Requested features**

- Online multiplayer mode
- Customization options for knives and backgrounds
- Checkpoint system in Climb mode
- Improved feedback on achievements and progress


### Stack Islands

[App page](https://appshunter.io/ios/app/stack-islands/id1407146596)

Build towering structures by stacking blocks to create unique islands. Enjoy a relaxing experience with charming visuals and challenge yourself with fun activities. Discover a hidden mystery while competing for the top global score.

**Highlights:** Stack blocks to create islands, Relaxing and charming design, Compete for global high scores, Engage in fun activities, Discover a hidden mystery, No personal data tracking

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Complete Game Unlock | $0.99 | one-time |


## Frequently asked questions

### Is Flippy Knife free?

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

### Is Stack Islands free?

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

### Which has better reviews, Flippy Knife or Stack Islands?

Flippy Knife is rated higher. Flippy Knife averages 4.6 out of 5 from 36K ratings, while Stack Islands averages 2.5 from 2 ratings.

### Do Flippy Knife or Stack Islands have ads?

Flippy Knife shows ads; Stack Islands does not.

### Which is updated more often, Flippy Knife or Stack Islands?

Flippy Knife ships an update every 5 weeks, and Stack Islands every 2 months. Most recently, Flippy Knife was updated on October 15, 2026 and Stack Islands on October 5, 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.*