# Cytus II vs Keep Building!

The clearest difference is price: Keep Building! at Free against Cytus II's $1.99. Keep Building! also leads on in-app purchases (none vs 10). Cytus II's advantage is chart position (#8 vs unranked). On ads, device support and iOS requirement there is nothing between them.

Keep Building! is free to download; Cytus II costs $1.99 up front. Cytus II sells 10 one-off in-app purchases. Keep Building! asks for nothing beyond the download.

## The numbers

| Metric | Cytus II | Keep Building! |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[4.8 (9.4K ratings)](https://appshunter.io/ios/app/cytus-ii/id1290687550/reviews)** | — |
| Number of ratings | **9.4K** | — |
| Positive reviews | 73.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | — |
| Monetization | Free with in-app purchases | — |
| Best chart rank | **#8** | — |
| Size | 3.3 GB | 84 MB |
| Requires iOS | 15.2 | **14.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Rayark International Limited](https://appshunter.io/developer/483529071) | [Leshan Wang184213996631](https://appshunter.io/developer/6775586929) |

## What reviewers say

### Cytus II

[App page](https://appshunter.io/ios/app/cytus-ii/id1290687550)

**Currently charting:** #8 Top Paid · Music, #46 Top Paid · Casual, #60 Top Grossing · Music (US App Store)

Immerse yourself in a futuristic music rhythm game where you tap along to the beat. Explore a virtual internet world and uncover a compelling story through engaging gameplay and a vast library of songs.

**Highlights:** Active Judgement Line rhythm gameplay, 250+ high-quality songs, Over 800 different charts, Story system 'iM', Cinematic visual experience

**Features:** Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Marvelous Mix vol. 1 | $4.99 | one-time |
| ConneR | $9.99 | one-time |
| Xenon | $9.99 | one-time |
| Cherry | $9.99 | one-time |
| Nora | $9.99 | one-time |
| Neko | $9.99 | one-time |
| CAPSO | $9.99 | one-time |
| Kizuna AI | $9.99 | one-time |
| Miku | $9.99 | one-time |
| 9 Characters | $34.99 | one-time |

**What reviewers like**

- 🎨 Stunning visuals and art style
- 🎶 Diverse and high-quality music
- 🔍 Compelling story and character interactions
- 🎮 Smooth and responsive gameplay
- 🕹️ Challenging difficulty progression

**What reviewers complain about**

- 💰 Expensive DLC characters and song packs
- 🐛 Occasional bugs and performance issues
- 🤔 Confusing tutorial and learning curve
- 🔍 Incomplete story and lack of content

**Reported bugs**

- Crashes and freezes on certain devices
- Missed notes despite accurate timing
- Glitched level progression and unlocks

**Requested features**

- Practice mode for difficult songs
- More free content and story updates
- Optimization for older devices
- Ability to create custom songs/levels


### Keep Building!

[App page](https://appshunter.io/ios/app/keep-building/id6775586927)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Cytus II free?

Cytus II costs $1.99, and also offers in-app purchases.

### Is Keep Building! free?

Keep Building! is free to download, with no in-app purchases.

### Do Cytus II or Keep Building! have ads?

Neither Cytus II nor Keep Building! shows ads.

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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.*