# DR.Osci.HD vs Learn Acoustics Engineering

The clearest difference is price: DR.Osci.HD at Free against Learn Acoustics Engineering's $1.99. DR.Osci.HD also leads on update cadence (every 12 months vs every 31 months) and iOS requirement (9.1 vs 13.0). On ads, in-app purchases and device support there is nothing between them.

DR.Osci.HD is free to download; Learn Acoustics Engineering costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

DR.Osci.HD ships an update every 12 months, Learn Acoustics Engineering every 31 months. The most recent releases landed on October 1, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | DR.Osci.HD | Learn Acoustics Engineering |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 12 months** | Every 31 months |
| Monetization | Free | — |
| Size | 2 MB | 41 MB |
| Requires iOS | **9.1** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Daniel Roth](https://appshunter.io/developer/356650850) | [Muhammad Umair](https://appshunter.io/developer/1696049320) |

## What reviewers say

### DR.Osci.HD

[App page](https://appshunter.io/ios/app/droscihd/id1003071526)

Explore physics concepts with a spring pendulum simulation. Manipulate parameters like damping, spring flexibility, and mass to observe oscillations. Record and export displacement graphs for deeper analysis.

**Highlights:** Spring pendulum simulation, Adjustable damping, spring flexibility, and mass, Gravity simulation, Record displacement over time, Export graphs to photo library

**Features:** macOS Compatibility

**In-app purchases:** none


### Learn Acoustics Engineering

[App page](https://appshunter.io/ios/app/learn-acoustics-engineering/id6451270819)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is DR.Osci.HD free?

DR.Osci.HD is free to download, with no in-app purchases.

### Is Learn Acoustics Engineering free?

Learn Acoustics Engineering costs $1.99, with no in-app purchases.

### Do DR.Osci.HD or Learn Acoustics Engineering have ads?

Neither DR.Osci.HD nor Learn Acoustics Engineering shows ads.

### Which is updated more often, DR.Osci.HD or Learn Acoustics Engineering?

DR.Osci.HD ships an update every 12 months, and Learn Acoustics Engineering every 31 months. Most recently, DR.Osci.HD was updated on October 1, 2026 and Learn Acoustics Engineering on October 9, 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.*