# DR.Osci.HD

> Physics simulation app for spring pendulum oscillations and parameter experimentation. (iPhone/iPad app by Daniel Roth.)

- Source: https://appshunter.io/ios/app/droscihd/id1003071526 (this page in markdown: same URL + `.md`)
- Developer: [Daniel Roth](https://appshunter.io/developer/356650850)
- Category: Education
- Price: Free
- Age rating: 4+
- Requires: iOS 9.1 · 2 MB
- Languages: American English
- Released: 2015-06-17
- Data updated: 2026-06-11
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/droscihd/id1003071526/reviews.md

## What is DR.Osci.HD?

In this simulation of a spring pendulum a mass is attached to two springs. You can touch the mass and move it out of its stable position. Or you can tilt your iOS device and watch gravity work. At all times you can alter the damping (k), the flexibility of the spring (D) and the mass of the steel ball (m). Take some time and play around with these parameters to become an expert in harmonic and not so harmonic oscillations. If you have found an interesting one, tap the graph button to record the displacement over the time. Tap the info button to enable or disable gravity and to export graphs into your photo library. Have fun learning physics!

Use the app completely on your own risk and for educational purposes only. The simulation is an approximation. It might be wrong and different from reality.

## Key features

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

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/droscihd/id1003071526/reviews.md

### 3/5 — Mildly educational, and it’s free

*2019-10-15*

To my astonishment , this only works in landscape format and with the button on the left [iPad Pro 9.7” iPadOS 13]

Needs a little more development work, methinks.

## Frequently asked questions about DR.Osci.HD

### What is DR.Osci.HD?

DR.Osci.HD is a free physics simulation app that allows you to explore the behavior of a spring pendulum. You can interact with the simulation by touching the mass or tilting your device, and adjust parameters like damping, spring flexibility, and mass.

### What physics concepts can I learn with DR.Osci.HD?

The app is designed for educational purposes, focusing on harmonic and non-harmonic oscillations. It helps users understand how different parameters affect the motion of a spring pendulum.

### Can I save my simulation results?

Yes, you can record the displacement of the mass over time by tapping the graph button. These graphs can then be exported to your photo library for further study.

### Does DR.Osci.HD have ads?

No, DR.Osci.HD is ad-free, providing an uninterrupted learning experience.

### What devices is DR.Osci.HD compatible with?

DR.Osci.HD is available for iPhone, iPad, and iPod devices and is rated for ages 4 and up.

### How often is DR.Osci.HD updated?

The app was last updated on June 10, 2017, to version 1.2. It was originally released on June 17, 2015.

### Is the simulation in DR.Osci.HD perfectly accurate?

The app states that the simulation is an approximation and might differ from reality. It is intended for educational purposes and should be used at your own risk.

## Version history (last 3 releases)

### 1.2 — 2017-06-10

This app has been updated by Apple to display the Apple Watch app icon.

- support for iOS 9.1

### 1.1 — 2015-06-30

- fixes graph export details

### 1.0 — 2015-06-17

No release notes.

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## More apps by Daniel Roth

- [DR.Orbit](https://appshunter.io/ios/app/drorbit/id697764304)
- [DR.Lissajous](https://appshunter.io/ios/app/drlissajous/id713543974)
- [LGKA](https://appshunter.io/ios/app/lgka/id915290742)

All apps by Daniel Roth: https://appshunter.io/developer/356650850

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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 2026-06-11.*