# Stack vs Flippy Knife

The clearest difference is update cadence: Stack at every 11 days against Flippy Knife's every 5 weeks. Stack also leads on chart position (#139 vs unranked). Flippy Knife's advantage is review sentiment (73% vs 56%). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Stack sells 15 one-off in-app purchases and Flippy Knife sells 12 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Flippy Knife holds the better App Store score, 4.6 against 4.4. Both are backed by a comparable volume of ratings — 60K and 36K respectively. Written reviews point the same way: 56% of Stack's written reviews are positive against 73% of Flippy Knife's.

Stack ships an update every 11 days, Flippy Knife every 5 weeks. Both last shipped on October 31, 2026.

## The numbers

| Metric | Stack | Flippy Knife |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (60K ratings)](https://appshunter.io/ios/app/stack/id1080487957/reviews) | **[4.6 (36K ratings)](https://appshunter.io/ios/app/flippy-knife-throw-spin-hit/id1208359453/reviews)** |
| Number of ratings | **60K** | 36K |
| Positive reviews | 56.1% of reviews | **72.6% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 11 days** | Every 5 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | **#139** | — |
| Size | 282 MB | 272 MB |
| Requires iOS | **15.0** | 15.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Ketchapp](https://appshunter.io/developer/528065807) | [BERESNEV s.r.o.](https://appshunter.io/developer/1501867783) |

## What reviewers say

### Stack

[App page](https://appshunter.io/ios/app/stack/id1080487957)

**Currently charting:** #139 Top Free · Action (US App Store)

Test your reflexes in this addictive block-stacking game. Aim for the highest tower possible with simple, beautiful graphics. Compete globally for the top score.

**Highlights:** Block stacking gameplay, High score competition, Beautiful graphics, Global leaderboards

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

**In-app purchases (15)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gem Pack Small | $0.99 | one-time |
| 10 Extra Lives | $0.99 | one-time |
| 200 Gems | $0.99 | one-time |
| 500 Gems | $1.99 | one-time |
| Gem Pack Medium | $2.99 | one-time |
| 30 Extra Lives | $2.99 | one-time |
| 1000 Gems | $2.99 | one-time |
| Remove Ads | $3.99 | one-time |
| Extra Offline Earnings | $4.99 | one-time |
| Gem Pack Grand | $4.99 | one-time |
| 50 Extra Lives | $4.99 | one-time |
| VIP Pass | $9.99 | one-time |
| Season Pass | $9.99 | one-time |
| Gem Pack Mega | $9.99 | one-time |
| Gem Pack Ultra | $19.99 | one-time |

**What reviewers like**

- 🚀 Fun and addictive
- 🎨 Aesthetically pleasing graphics
- 🧘‍♀️ Relaxing and calming
- 💪 Challenging gameplay

**What reviewers complain about**

- 🔍 Too many ads
- 🐛 Frequent glitches and lags
- 🔄 Repetitive gameplay

**Reported bugs**

- Blocks disappearing or glitching
- Game freezing or crashing
- Inconsistent performance on newer devices

**Requested features**

- Ability to choose color schemes
- More variety in block designs
- Improved high score tracking
- Reduced ad frequency


### 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 |
| --- | --- | --- |
| PROFESSIONAL CLUB MEMBERSHIP | $3.99 | per 7 days |
| Premium Membership (1 week) | $4.99 | 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


## Frequently asked questions

### Is Stack free?

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

### Is Flippy Knife free?

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

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

Flippy Knife is rated higher. Stack averages 4.4 out of 5 from 60K ratings, while Flippy Knife averages 4.6 from 36K ratings.

### Do Stack or Flippy Knife have ads?

Both Stack and Flippy Knife show ads.

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

Stack ships an update every 11 days, and Flippy Knife every 5 weeks. Most recently, Stack was updated on October 31, 2026 and Flippy Knife on October 31, 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.*