Inertia Pro by Marc Kerstein
Created by: Marc Kerstein
Key features
Works with real social media platforms (Instagram, Twitter, etc.)
Remote control feature via Zeno integration
Customizable for real-time or pre-planned forces
Face-up interaction (no suspicious face-down handling)
Intuitive setup with minimal prep required
Proximity sensor and Apple Watch compatibility (Pro version)
Pros
Highly convincing and natural-looking forces
Versatile for various performance contexts (social media, websites, etc.)
Real-time customization without pre-planning
Seamless integration with Zeno for remote control
Detailed instructions and walkthroughs included
Cons
iPhone-only (no Android support)
Requires an internet connection
Minor glitches (though updates are frequent)
Remote features may require additional purchases (e.g., Zeno)
Effect
Inertia Pro is an iPhone app that allows magicians to force content on social media or websites in a highly convincing way. The spectator can freely browse Instagram, Twitter, or other websites before performing a single scroll that lands on a predetermined post, image, or word. The key difference from other forcing methods is that the phone remains face-up, making the process appear completely natural.
Full Details
Inertia Pro was developed by Marc Kerstein as an evolution of his earlier Amalgam Project release. The app integrates with real social media feeds and websites, meaning the forced content appears within the spectator’s actual browsing experience. Unlike traditional forcing methods that require the phone to be face-down, Inertia Pro keeps the screen visible, eliminating suspicion.
The app includes a remote feature that allows magicians to force content on a spectator’s own device by sending them a link. It also pairs with Kerstein’s other app, Zeno, for additional functionality, such as peeking at a spectator’s selection in real time. The app uses proximity sensors and can even sync with an Apple Watch for hands-free control.
Who Should Consider the Trick
Inertia Pro is ideal for magicians and mentalists who want a modern, tech-based method for forcing information. It works well for performers who frequently incorporate social media or digital elements into their acts. Since it requires an iPhone, it’s best suited for those comfortable using apps in performance.
Information on How Difficult It Is to Perform
The app is designed to be intuitive, with clear instructions and a walkthrough for first-time users. While there are multiple customization options, the basic functionality is straightforward—open the app, select the force, and let the spectator scroll. The remote feature adds complexity but is well-documented.
Steve Fulton notes that after initial practice, the process becomes habitual: "Once I've learned it, I don't have to think too much about it, and very quickly it becomes very habitual." However, a stable internet connection is required for full functionality.
What Magicians Say
- Steve Fulton (RealMagicReview) highlights the realism of the app: "The work that's gone into this to make this feel really, really real is an awful lot... It has to really, really look like that's what they're doing, and that's kind of what they are doing."
- Another reviewer mentions the versatility: "You can force anything in real time... and importantly, it's face-up."
- The integration with Zeno is praised: "Linking the two is brilliant... it’s just endless what you can do."
Inertia Pro is a powerful tool for digital magic, offering a seamless and deceptive way to force content while keeping the experience natural for spectators.
What people are saying about Inertia Pro
Steve Faulconer says...
Inertia Pro looks awesome. It’s one of those apps where the more you play with it, the more hidden gems you discover.
Steve Fulton says...
The work that's gone into this to make it feel really real is an awful lot. [...] It's absolutely brilliant—intuitive, customizable, and perfect for modern magic.
Review videos
Inertia Pro by Marc Kerstein Review
RealMagicReview mentioned this magic trick in this video.
Other videos
Medusa, Inertia Pro, Xeno, Random Stuff. Comments On Comments #35
RealMagicReview mentioned this magic trick in this video.