# SimplePhysics

> Design and simulate structures with a realistic physics engine, testing for strength and cost. (iPhone/iPad app by Jundroo, LLC.)

- Source: https://appshunter.io/ios/app/simplephysics/id408233979 (this page in markdown: same URL + `.md`)
- Developer: [Jundroo, LLC](https://appshunter.io/developer/311852133)
- Category: Games, Education, Puzzle, Simulation
- Price: $0.99 with in-app purchases
- Rating: 4.50/5 from 242 App Store ratings · 459 written reviews indexed
- Age rating: 9+
- Requires: iOS 8.0 · 9 MB
- Languages: American English
- Released: 2011-11-02
- Data updated: 2026-08-27
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/simplephysics/id408233979/reviews.md

## What is SimplePhysics?

SimplePhysics lets you design complex structures for everything from tree houses to ferris wheels and then simulates your design with a sophisticated physics engine.

A wise person once said: "An engineer is someone who can do for a dime what any fool can do for a dollar." In SimplePhysics, your design must not only be strong enough, it must be cheap enough to win. 

Create your design in seconds with the blueprints editor. If you make a mistake, simply tap the Undo button. Zoom in and out by pinching the screen and pan the view using a two finger drag.

While testing, you can see how the strain is distributed across your design. Areas that are under immense strain are colored bright red, while other areas are colored green. This allows you to find and fix problem areas in your design. 

The finger test lets you use your finger to push and pull on your design. You can use this with pinpoint accuracy, or you can just smash your design to smithereens. The finger test has an explosive new twist. You can now create explosions by tapping the screen for ultimate annihilation.

The newly added Bomb Shack level includes a dummy with full support for ragdoll physics. Throw him around, blow him up, and smash him against your design.

The slow motion feature lets you slow things down so you can see how your design is failing, and it is also incredibly fun to watch explosions destroying your design in slow motion. 

Features
* Realistic physics simulation
* Ragdoll physics
* Slow motion mode
* Stress display shows problem areas in your design
* Wide variety of levels!
* Finger Test - smash your design to pieces, or blow it up with realistic explosions!
* Save/Load designs
* E-mail your blueprints to your friends
* Universal support for the iPad

## Key features

- Realistic physics simulation
- Blueprint editor
- Stress display
- Finger Test with explosions
- Ragdoll physics
- Slow motion mode

## Pricing and in-app purchases

Base price: $0.99.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| View Solution | $0.99 | one-time |
| Thank the Developer | $0.99 | one-time |


## What do users think of SimplePhysics?

Overall sentiment: positive

**Pros**

- 👍 Challenging and fun
- 💡 Engaging and educational
- 👍 Great for all ages
- 👍 Realistic physics simulation
- 👍 Addictive gameplay
- 👍 Excellent value for money

**Cons**

- 🐛 Inconsistent physics behavior
- 🐛 Difficulty placing/removing beams
- 🐛 Crashes and compatibility issues
- 🔍 Limited number of levels

**Commonly reported bugs**

- Crashes on startup
- Structures behaving unexpectedly
- Leaderboard scores not accurate

**Most requested features**

- More levels and level packs
- Improved user interface
- Ability to create custom structures
- Leaderboards and social features
- Tutorials and explanations of physics concepts

## Recent user reviews (10 of 459)

All indexed reviews: https://appshunter.io/ios/app/simplephysics/id408233979/reviews.md

### 1/5 — You told me to do it so I do it

*2025-09-13*

The app asked me if I wanted to leave a review so I did

### 5/5 — Great game, challenging puzzles

*2025-08-20*

I’ve played this game since the initial release. My daughter plays it quite a bit now, too. Always trying to beat my scores. The leaderboards seem to be gone, now, though.

Would love to see more levels added (even if it was a paid add-on)!

*Please bring back the high scores!

### 2/5 — Kam

*2025-07-06, version 2.1.4*

Some of the levels are impossible!

### 2/5 — No……

*2025-04-06, version 2.1.4*

I cannot believe I can’t even complete the tree house! 2 stars.

### 5/5 — Lebron

*2024-08-11*

Extremely hard but very fun 10/10

### 1/5 — Dude, Ur trash

*2024-01-22, version 2.1.4*

Wasted my time on the stair level, now I’m going to Roblox. Bye forever

### 5/5 — Great Game

*2023-09-09*

As a mechanical engineer, I enjoy relaxing with this game. The FEA view is great to help minimize stress. More levels would be great, but I still enjoy reducing old answers to reduce cost of my structures.

### 4/5 — Great Game!

*2023-07-12*

It’s a great game! However, it's way too short, it needs more levels. It is amazing game based off of engineering with a challenging aspect which will get you hooked very quickly. It has good challenge scaling, each level gets harder but if you use your ideas from another build it is easier. The leaderboard makes me want to keep playing because I am very competitive, so that’s another added bonus. Overall, it’s a great game

### 3/5 — one problem

*2023-06-30, version 2.1.4*

I like simple Physics but the only thing is that the super annoying budget limit. if only the budget limit wasn’t there.

### 4/5 — Great game, could be longer or update

*2023-04-24*

Could be better but for $.99 it’s well worth the cost. I’d pay more for more lvls

## Frequently asked questions about SimplePhysics

### What does SimplePhysics do?

SimplePhysics allows you to design and simulate various structures, from simple objects to complex machines, using a sophisticated physics engine. You can test the strength and stability of your designs by applying forces, observing stress distribution, and even using destructive methods like explosions.

### What are the key features of SimplePhysics?

Key features include a realistic physics simulation, a blueprint editor for creating designs, a stress display to highlight problem areas, a 'Finger Test' for interactive manipulation and explosions, ragdoll physics, and a slow-motion mode for detailed observation of simulations.

### Is SimplePhysics free to download and use?

The application is free to download and offers in-app purchases. While the core functionality is available for free, certain features or content might be accessible through these purchases.

### What kind of structures can I design?

You can design a wide range of structures, from simple objects like tree houses to more complex contraptions like ferris wheels. The app's physics engine allows for the simulation of how these designs will behave under various forces and conditions.

### How can I test my designs?

Testing involves observing the realistic physics simulation, checking the stress display for weak points (colored red), using the 'Finger Test' to push, pull, or smash your design, and even triggering explosions. The slow-motion feature helps in analyzing how designs fail.

## Version history (last 5 releases)

### 2.1.4 — 2017-08-21

This update from Apple will improve the functionality of this app. No new features are included.

Updated to support 64-bit.

### 2.1.3 — 2014-12-11

* Added a link to our new game, SimplePlanes. Build airplanes and test them with realistic physics and see how they fly. If you like SimplePhysics, then you will love SimplePlanes! You can find it on the App Store now!

### 2.1.1 — 2013-09-04

* Added link to my new game, SimpleRockets, which is a game where you build rocket ships and blast off into space and explore the solar system, all while using realistic physics:
https://itunes.apple.com/us/app/simplerockets/id663068211?ls=1&mt=8

### 2.1 — 2012-10-04

* Added support for iPhone 5 display
* Added support for iPhone Retina display
* Added support for iPad Retina display
* Added a new load blueprints screen

### 2.0.1 — 2012-08-15

* Tweaked the editor to make it more obvious when you are in the Erase Mode.
* Added a "Reset Game Data" feature for educators so that they can quickly erase all designs when preparing for a new class of students. This is available in the info menu under the main menu under the credits.

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## More apps by Jundroo, LLC

- [BridgeBasher](https://appshunter.io/ios/app/bridgebasher/id324473106)
- [Dummy Defense](https://appshunter.io/ios/app/dummy-defense/id460832678)
- [SimpleRockets](https://appshunter.io/ios/app/simplerockets/id663068211)
- [SimplePlanes](https://appshunter.io/ios/app/simpleplanes/id823869162)
- [Aero Effect](https://appshunter.io/ios/app/aero-effect/id1202422630)

All apps by Jundroo, LLC: https://appshunter.io/developer/311852133

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-27.*