# Rainfall Sandbox vs Mountain Building

Rainfall Sandbox and Mountain Building are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Rainfall Sandbox | Mountain Building |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rainfall-sandbox/id6736621542/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Monetization | Free | — |
| Size | 49 MB | 33 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | +4 | 4+ |
| Developer | [Smithsonian Institution](https://appshunter.io/developer/370564865) | [Science Education Institute](https://appshunter.io/developer/1439710468) |

## What reviewers say

### Rainfall Sandbox

[App page](https://appshunter.io/ios/app/rainfall-sandbox/id6736621542)

Explore the relationship between weather and landforms by building your own world. This simulation allows you to experiment with different terrains and observe how rainclouds interact with them, revealing scientific principles like orographic lift. It's designed for play-based learning about Earth's systems.

**Highlights:** World building with land and water formations, Dynamic simulation of orographic lift, Observation of raincloud behavior, Play and discovery-based learning, Introduction to geosphere concepts, Aligned to 3rd-5th grade science standards

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

**In-app purchases:** none


### Mountain Building

[App page](https://appshunter.io/ios/app/mountain-building/id6736860100)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Rainfall Sandbox free?

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

### Is Mountain Building free?

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

### Do Rainfall Sandbox or Mountain Building have ads?

Neither Rainfall Sandbox nor Mountain Building shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*