# 3DPhyS vs BugBuster

The clearest difference is in-app purchases: 3DPhyS at none against BugBuster's 3. 3DPhyS also leads on update cadence (fortnightly vs every 6 weeks). BugBuster's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. BugBuster sells 3 in-app purchases, starting at $0.99 per month. 3DPhyS asks for nothing beyond the download.

3DPhyS ships an update fortnightly, BugBuster every 6 weeks. The most recent releases landed on August 6, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | 3DPhyS | BugBuster |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Every 6 weeks |
| Monetization | Ad-supported | — |
| Size | 176 MB | 200 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sota Takasugi](https://appshunter.io/developer/1713502017) | [TUTU KIDS FUN Network Technology (Shanghai) Co., Ltd.](https://appshunter.io/developer/1660485470) |

## What reviewers say

### 3DPhyS

[App page](https://appshunter.io/ios/app/3dphys-physics-simulator/id6470351815)

Explore fundamental physics concepts through interactive simulations. Adjust parameters like initial velocity and bounce coefficient to understand phenomena like free fall, projectile motion, and circular motion. This app supports learning in multiple languages.

**Highlights:** Interactive physics simulations, Adjustable experiment parameters, Multiple physics experiment modules, Multilingual interface, Free to download and use

**Features:** macOS Compatibility

**In-app purchases:** none


### BugBuster

[App page](https://appshunter.io/ios/app/bugbuster-tutukidsfun/id6755078991)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 图图星球灭虫大王VIP-1个月 | $0.99 | per month |
| 图图星球灭虫大王VIP-3个月 | $1.99 | per 3 months |
| 图图星球灭虫大王VIP-1年 | $4.99 | per year |


## Frequently asked questions

### Is 3DPhyS free?

3DPhyS is free to download, with no in-app purchases.

### Is BugBuster free?

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

### Do 3DPhyS or BugBuster have ads?

3DPhyS shows ads; BugBuster does not.

### Which is updated more often, 3DPhyS or BugBuster?

3DPhyS ships an update fortnightly, and BugBuster every 6 weeks. Most recently, 3DPhyS was updated on August 6, 2026 and BugBuster on September 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.*