Spooky the Ghost vs Two Links Double Pendulum
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
Spooky the Ghost
Read full descriptionHide full description
This Halloween enjoy Spooky the Ghost. Spooky is a cute talking ghost! Just ask Spooky a question and press the ask me button, Spooky will speak random answer. Touch Spooky's eyes, nose and body to see what he says. Spooky is fun and entertaining for kids and adults of all ages. Happy Halloween! ** This app is intended for entertainment purposes only and does not provide true question answering functionality. ** ** Airplay requires an iOS device with AirPlay Mirroring, a wireless network, and a TV connected to an Apple TV ** _________________________________________________________ ** If you like this app, please write a review and also share this app with your friends, family and associates on Social Media. Thank you for your support. ** We work very hard to make our apps the best they can be and want our users to have a great user experience. If you have ideas on how to make this app better, or If you are experiencing technical problems with this app, please contact us by pressing the "App Support" button located in the Information screen. Thank you.
Two Links Double Pendulum
Read full descriptionHide full description
Two Links brings one of physics' most beautiful chaotic systems to life. Watch a double pendulum swing, twist, and spiral in real-time 3D ā then place it on your floor in Augmented Reality and walk around it. Features ⢠Real-time double pendulum physics (RK4 integration) ⢠AR mode ā anchor the pendulum on any flat surface ⢠Orbit the 3D scene freely or let it run hands-free ⢠Adjust link length, pivot position, density, and color ⢠Particle trail from the second link tip ⢠Night sky environment with the Moon and Earth ⢠Pause, shuffle, and watch the chaos reset
Screenshots
Verdict
The clearest difference is price: Two Links Double Pendulum at Free against Spooky the Ghost's $0.99. On update cadence, ads, in-app purchases and device support there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Two Links Double Pendulum is free to download; Spooky the Ghost costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Spooky the Ghost ships an update every 40 months, Two Links Double Pendulum every 47 months. The most recent releases landed on September 25, 2026 and October 9, 2026 respectively.
| Parameter | Spooky the Ghost | Two Links Double Pendulum |
|---|---|---|
| Price | $0.99 | Free ā better |
| Update frequency | Every 40 months ā better | Every 47 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad, iPod ā better |
| Requires iOS | 17.0 ā better | 18.2 |
| Further details ā not scored | ||
| Size | 42 MB | 281 MB |
| Age rating | 4+ | 4+ |
| Developer | JS Digital Productions, Inc. | Eliott Radcliffe |
In-app purchases
Spooky the Ghost
No in-app purchases
Two Links Double Pendulum
No in-app purchases
Questions
Is Spooky the Ghost free?
Is Two Links Double Pendulum free?
Do Spooky the Ghost or Two Links Double Pendulum have ads?
Which is updated more often, Spooky the Ghost or Two Links Double Pendulum?
Other comparisons















