# SimplePhysics vs Genius Killer 2 Sandbox

The clearest difference is price: Genius Killer 2 Sandbox at Free against SimplePhysics's $0.99. SimplePhysics's advantage is rating (4.5 vs 3.3) and ads (none vs shown). On ratings volume, in-app purchases, monetization model and device support there is nothing between them.

Genius Killer 2 Sandbox is free to download; SimplePhysics costs $0.99 up front. SimplePhysics sells 2 one-off in-app purchases and Genius Killer 2 Sandbox sells 7 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

SimplePhysics holds the better App Store score, 4.5 against 3.3. Both are backed by a comparable volume of ratings — 242 and 82 respectively. Written reviews point the same way: 85% of SimplePhysics's written reviews are positive against 51% of Genius Killer 2 Sandbox's.

SimplePhysics ships an update every 3 weeks, Genius Killer 2 Sandbox every 10 months. Both last shipped on October 15, 2026.

## The numbers

| Metric | SimplePhysics | Genius Killer 2 Sandbox |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[4.5 (242 ratings)](https://appshunter.io/ios/app/simplephysics/id408233979/reviews)** | [3.3 (82 ratings)](https://appshunter.io/ios/app/genius-killer-2-sandbox/id1507755806/reviews) |
| Number of ratings | **242** | 82 |
| Positive reviews | **85.0% of reviews** | 50.7% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 10 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | **#89** | — |
| Size | 9 MB | 228 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 17+ |
| Developer | [Jundroo, LLC](https://appshunter.io/developer/311852133) | [Darya Vladislavovna](https://appshunter.io/developer/1067566962) |

## What reviewers say

### SimplePhysics

[App page](https://appshunter.io/ios/app/simplephysics/id408233979)

**Currently charting:** #89 Top Paid · Puzzle, #140 Top Paid · Simulation (US App Store)

Design and simulate complex structures using a realistic physics engine. Test your creations by applying stress, using a finger to push and pull, or even creating explosions. Analyze strain distribution to identify weak points and refine your designs for strength and cost-effectiveness.

**Highlights:** Realistic physics simulation, Blueprint editor, Stress display, Finger Test with explosions, Ragdoll physics, Slow motion mode

**Features:** Vision Pro support

**In-app purchases (2)**

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

**What reviewers like**

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

**What reviewers complain about**

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

**Reported bugs**

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

**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


### Genius Killer 2 Sandbox

[App page](https://appshunter.io/ios/app/genius-killer-2-sandbox/id1507755806)

Design and construct unique destructive machines in an open-world sandbox. Engage in combat with various enemies across land, sea, and air using your custom-built creations. The intuitive editor allows for complex control schemes for any vehicle.

**Highlights:** Build destructive machines, Intuitive editor, Open world combat, Create flying vehicles, Build water transport, Secret weapon acquisition

**Features:** macOS Compatibility

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO user subscription | $3.99 | per month |
| 1000 Gold | $2.99 | one-time |
| 2500 Gold | $5.99 | one-time |
| Silver Skin | $6.99 | one-time |
| 5000 Gold | $10.99 | one-time |
| 10 000 Gold | $19.99 | one-time |
| 30 000 Gold | $99.99 | one-time |


## Frequently asked questions

### Is SimplePhysics free?

SimplePhysics costs $0.99, and also offers in-app purchases.

### Is Genius Killer 2 Sandbox free?

Genius Killer 2 Sandbox is free to download, with in-app purchases available.

### Which has better reviews, SimplePhysics or Genius Killer 2 Sandbox?

SimplePhysics is rated higher. SimplePhysics averages 4.5 out of 5 from 242 ratings, while Genius Killer 2 Sandbox averages 3.3 from 82 ratings.

### Do SimplePhysics or Genius Killer 2 Sandbox have ads?

Genius Killer 2 Sandbox shows ads; SimplePhysics does not.

### Which is updated more often, SimplePhysics or Genius Killer 2 Sandbox?

SimplePhysics ships an update every 3 weeks, and Genius Killer 2 Sandbox every 10 months. Most recently, SimplePhysics was updated on October 15, 2026 and Genius Killer 2 Sandbox on October 15, 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.*