# Flippy Knife vs Build Up!!

Flippy Knife and Build Up!! both sit at 4.6 stars, but that hides the real split: 73% of Flippy Knife's written reviews are positive against 34% of Build Up!!'s. Build Up!!'s advantage is update cadence (fortnightly vs every 5 weeks). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Flippy Knife sells 12 in-app purchases, starting at $3.99 per 7 days and Build Up!! sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.6 for Flippy Knife against 4.5 for Build Up!!. Both are backed by a comparable volume of ratings — 36K and 16K respectively. Written reviews are what separate them: 73% of Flippy Knife's written reviews are positive against 34% of Build Up!!'s.

Flippy Knife ships an update every 5 weeks, Build Up!! fortnightly. Both last shipped on October 31, 2026.

## The numbers

| Metric | Flippy Knife | Build Up!! |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (36K ratings)](https://appshunter.io/ios/app/flippy-knife-throw-spin-hit/id1208359453/reviews)** | [4.5 (16K ratings)](https://appshunter.io/ios/app/build-up/id1453032346/reviews) |
| Number of ratings | **36K** | 16K |
| Positive reviews | **72.6% of reviews** | 34.1% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 5 weeks | **Fortnightly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 272 MB | 266 MB |
| Requires iOS | 15.2 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [BERESNEV s.r.o.](https://appshunter.io/developer/1501867783) | [Voodoo](https://appshunter.io/developer/714804730) |

## 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 |
| --- | --- | --- |
| 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


### Build Up!!

[App page](https://appshunter.io/ios/app/build-up/id1453032346)

Construct your tower as tall as possible by strategically placing building nodes. Collect more nodes as you ascend to reach crucial checkpoints and achieve new heights.

**Highlights:** Build structures high, Gather building nodes, Reach checkpoints, Ascend to new heights

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads. | $2.99 | one-time |

**What reviewers like**

- 👍 Simple and fun game
- 🚀 Runs well with no crashes
- 💰 Free to play

**What reviewers complain about**

- 💸 Excessive ads
- 🐛 Impossible or buggy levels
- 🔁 Repetitive gameplay

**Reported bugs**

- Rivet counter malfunction
- Levels regenerating incorrectly
- Tower physics issues

**Requested features**

- More level variety
- Ability to create custom maps
- Removal of perfect triangle requirement


## Frequently asked questions

### Is Flippy Knife free?

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

### Is Build Up!! free?

Build Up!! is free to download, with in-app purchases available.

### Which has better reviews, Flippy Knife or Build Up!!?

Flippy Knife is rated higher. Flippy Knife averages 4.6 out of 5 from 36K ratings, while Build Up!! averages 4.5 from 16K ratings.

### Do Flippy Knife or Build Up!! have ads?

Both Flippy Knife and Build Up!! show ads.

### Which is updated more often, Flippy Knife or Build Up!!?

Flippy Knife ships an update every 5 weeks, and Build Up!! fortnightly. Most recently, Flippy Knife was updated on October 31, 2026 and Build Up!! 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.*