# Udaff vs Build RollerCoaster

The clearest difference is in-app purchases: Udaff at none against Build RollerCoaster's 4. Udaff also leads on ads (none vs shown). Build RollerCoaster's advantage is iOS requirement (15.0 vs 18.0). On price and device support there is nothing between them.

Both are free to download. Build RollerCoaster sells 4 one-off in-app purchases. Udaff asks for nothing beyond the download.

## The numbers

| Metric | Udaff | Build RollerCoaster |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/build-rollercoaster-simulator/id6809723551/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 days | — |
| Monetization | — | Free with in-app purchases |
| Size | 51 MB | 263 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Andy Khristoforof](https://appshunter.io/developer/1751949334) | [LLP Take Top Entertainment](https://appshunter.io/developer/1664783937) |

## What reviewers say

### Udaff

[App page](https://appshunter.io/ios/app/udaff/id6748914774)

**Features:** macOS Compatibility, iPhone Duo support

**In-app purchases:** none


### Build RollerCoaster

[App page](https://appshunter.io/ios/app/build-rollercoaster-simulator/id6809723551)

Design, build, and ride your own block-based roller coasters. Earn in-game currency to unlock new track elements and expand your theme park creations. Experience your unique designs from start to finish with simple, responsive controls.

**Highlights:** Design and build roller coaster tracks, Ride and test every coaster, Earn in-game currency, Unlock new track elements, Block-based creative building, Simple and responsive controls

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Crystals +100 | $0.99 | one-time |
| Crystals +300 | $1.99 | one-time |
| Disable Ads | $2.99 | one-time |
| Crystals +1000 | $4.99 | one-time |


## Frequently asked questions

### Is Udaff free?

Udaff is free to download, with no in-app purchases.

### Is Build RollerCoaster free?

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

### Do Udaff or Build RollerCoaster have ads?

Build RollerCoaster shows ads; Udaff does not.

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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.*