# iBuilder vs Ultimate Coaster 2

The clearest difference is review sentiment: Ultimate Coaster 2 at 74% against iBuilder's 16%. Ultimate Coaster 2 also leads on rating (4.1 vs 2.3) and ratings volume (1.9K vs 11). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. iBuilder sells 1 one-off in-app purchase and Ultimate Coaster 2 sells 16 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Ultimate Coaster 2 holds the better App Store score, 4.1 against 2.3. That said, the two scores are not equally well evidenced: Ultimate Coaster 2 has 1.9K ratings behind it against 11, so its average is the more settled of the two. Written reviews point the same way: 16% of iBuilder's written reviews are positive against 74% of Ultimate Coaster 2's.

iBuilder ships an update every 29 months, Ultimate Coaster 2 every 6 months. The most recent releases landed on October 7, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | iBuilder | Ultimate Coaster 2 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.3 (11 ratings)](https://appshunter.io/ios/app/ibuilder/id453519722/reviews) | **[4.1 (1.9K ratings)](https://appshunter.io/ios/app/ultimate-coaster-2/id1525621987/reviews)** |
| Number of ratings | 11 | **1.9K** |
| Positive reviews | 16.4% of reviews | **73.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 29 months | **Every 6 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 18 MB | 145 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sea Venture LLC](https://appshunter.io/developer/312276940) | [Jason Hu](https://appshunter.io/developer/1201564028) |

## What reviewers say

### iBuilder

[App page](https://appshunter.io/ios/app/ibuilder/id453519722)

This is a creative building game where you can construct anything you imagine using over 60 block types. Design entire cities with customizable terrain, realistic graphics, and dynamic environmental effects.

**Highlights:** Build castles, docks, mansions, and more, Over 60 different block types, Random terrain generation, Customizable island size and vegetation, 360-degree camera control, Realistic water, sky, and sun effects, Save up to 3 worlds

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| iBuilder | $1.99 | one-time |

**What reviewers like**

- 🚀 Realistic graphics
- 👍 Relaxing gameplay

**What reviewers complain about**

- 🐛 Frequent crashes
- 👎 Confusing controls
- 💰 Paywall for full experience
- 🚫 Lack of content and features

**Reported bugs**

- Blocks disappearing after placement
- Inability to delete or move placed blocks

**Requested features**

- Ability to modify terrain
- Addition of characters and wildlife
- More building options and tools


### Ultimate Coaster 2

[App page](https://appshunter.io/ios/app/ultimate-coaster-2/id1525621987)

Design and experience your own roller coasters in a 3D environment. This app offers intuitive controls for all skill levels, allowing you to build, customize, and ride your creations with realistic physics. Save your designs and explore pre-built demo coasters.

**Highlights:** Create custom roller coasters, Realistic physics simulation, Intuitive and advanced controls, Save and load track designs, Paint tracks any color, Modify terrain

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

**In-app purchases (16)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Box-Spined Hyper Coaster | $1.99 | one-time |
| Dive Machine (10 Seats) | $1.99 | one-time |
| Box-Spined Wing Coaster | $1.99 | one-time |
| Box-Spined Inverted Coaster | $1.99 | one-time |
| Girder Rocket Coaster | $1.99 | one-time |
| Corkscrew Coaster | $1.99 | one-time |
| Hybrid Coaster | $1.99 | one-time |
| Single Rail Coaster | $1.99 | one-time |
| Girder Blitz (OTSR) Coaster | $1.99 | one-time |
| Girder Spinner Coaster | $1.99 | one-time |
| Single Spined Coaster (3 Row) | $1.99 | one-time |
| Multidimensional Coaster | $1.99 | one-time |
| Girder Blitz (Lapbar) Coaster | $1.99 | one-time |
| Double Spined Coaster (2 row) | $1.99 | one-time |
| Girder Coaster (4 Seats) | $1.99 | one-time |
| All Coaster Types | $19.99 | one-time |

**What reviewers like**

- 🤩 Amazing game
- 👍 Easy to use
- 🎢 Great for roller coaster enthusiasts
- 🔥 Best mobile coaster game
- 🎨 Good customization options

**What reviewers complain about**

- 🐛 Crashes and glitches
- 💰 Paid content required
- 🔍 Limited camera controls
- 🌄 Lacking scenery and theming options
- 🔧 Clunky track transitions

**Reported bugs**

- Crashes when loading large coasters
- Glitches with track placement and orientation
- Autosave feature not working as expected
- Inability to load previously saved coasters

**Requested features**

- Add switch tracks
- Implement shuttle coasters
- Include more pre-made inversion elements
- Allow customization of station and queue
- Introduce day/night cycle and lighting


## Frequently asked questions

### Is iBuilder free?

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

### Is Ultimate Coaster 2 free?

Ultimate Coaster 2 is free to download, with in-app purchases available.

### Which has better reviews, iBuilder or Ultimate Coaster 2?

Ultimate Coaster 2 is rated higher. iBuilder averages 2.3 out of 5 from 11 ratings, while Ultimate Coaster 2 averages 4.1 from 1.9K ratings.

### Do iBuilder or Ultimate Coaster 2 have ads?

Neither iBuilder nor Ultimate Coaster 2 shows ads.

### Which is updated more often, iBuilder or Ultimate Coaster 2?

iBuilder ships an update every 29 months, and Ultimate Coaster 2 every 6 months. Most recently, iBuilder was updated on October 7, 2026 and Ultimate Coaster 2 on October 13, 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.*