# Mechanical Pendulums vs Oscillations & Waves Lab

The clearest difference is price: Mechanical Pendulums at Free against Oscillations & Waves Lab's $4.99. Mechanical Pendulums also leads on in-app purchases (none vs 2) and iOS requirement (15.0 vs 17.6). Oscillations & Waves Lab's advantage is device support.

Mechanical Pendulums is free to download; Oscillations & Waves Lab costs $4.99 up front. Oscillations & Waves Lab sells 2 in-app purchases, starting at $2.99 per month. Mechanical Pendulums asks for nothing beyond the download.

## The numbers

| Metric | Mechanical Pendulums | Oscillations & Waves Lab |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| In-app purchases | **No** | Yes |
| Ads | — | No |
| Update frequency | — | Every 3 weeks |
| Size | 0 MB | 72 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | — | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [ManneTroll Solutions](https://appshunter.io/developer/313743954) | [旭 陈](https://appshunter.io/developer/6780413573) |

## What reviewers say

### Mechanical Pendulums

[App page](https://appshunter.io/ios/app/mechanical-pendulums/id377376047)

**In-app purchases:** none


### Oscillations & Waves Lab

[App page](https://appshunter.io/ios/app/oscillations-and-waves-lab/id6795052086)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $2.99 | per month |
| Unlock All Experiments | $5.99 | one-time |


## Frequently asked questions

### Is Mechanical Pendulums free?

Mechanical Pendulums is free to download, with no in-app purchases.

### Is Oscillations & Waves Lab free?

Oscillations & Waves Lab costs $4.99, and also offers in-app purchases.

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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.*