Benham's Disk vs Duality Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Benham's Disk
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Let's play with mysterious Benham's disk. You can see various colors appearing from the black and white disk! Different colors will be shown if you change the spin speed and patterns. So let's try spinning by yourself. ### Spin the sample disks ### There are three sample disks. Those all have interesting visual effects. Some disks do not show colors in sunlight, but colors appear under the fluorescent lights. You'll get a sense of wonder. ### Make your own disks ### You can also edit the sample disks. If you long-press a disk, disk-pattern editor will open. Moreover, you can make your own disk from scratch by tapping the plus button. You've successfully made your own cool disks? So why not sharing them. You can export disk images to Photo Library and print them to make 'real' Benham's disks. ### Spin photos from Photo Library ### Next, let's import your photo snaps from the Photo Library. How about taking a picture of umbrella, plate or your face? Spinning them in Benham's disk brings you lots of fun! You can change scaling and central point to see different effects. Now the creation of Benham's disk made easy!
Duality Pro
This app allows magicians to embed audience-thought-of numbers, words, or images into pre-recorded videos for astonishing performances. It offers a user-friendly interface for quick setup and can project videos onto large screens.
- Embed thoughts into videos
- User-friendly interface
- Large screen projection mode
- Customizable videos
- 11 input methods
- Easy Mode setup
- Includes generic videos
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Duality Pro, now available on the App Store, offers a remarkable effect that redefines the boundaries of magic. This app allows magicians to astound audiences by seamlessly embedding their thought-of numbers, words, or images into a pre-recorded video. The ability to materialize personal thoughts into a visual medium is not only astonishing but also adds a contemporary twist to traditional magic. The app's ease of use is another key feature, appealing to both new and experienced magicians. Its user-friendly interface ensures quick, hassle-free setup, allowing performers to focus on their creativity and performance rather than getting bogged down with technical details. In essence, Duality Pro is more than just a tool; it's a revolutionary step in the world of magic, combining astonishing effects with simplicity and technological sophistication. It's an invitation to magicians to try it now and experience the future of magic in their performances. Play it BIG. You can also project the video on a large screen, to generate a great stage attraction (using a special mode that projects onto the screen). User-friendly Interface The one-time set-up (per video) takes only a few minutes It's always in your pocket, ready to perform The video is totally customizable. Apply your creativity and embellish it with your own style Both Portrait (for mobile) and Landscape (for large screens) are enabled Easy to set up (only 3 taps) – even easier to perform You show your spectators a video of yourself (or an assistant or an animated character) on your mobile screen, and ask a volunteer to think of any number (or name, picture, drawing, etc.). Towards the end of your own video, the item thought-of suddenly appears - embedded in the video. BOOOOOM!!! some extra info: 11 different input methods, to suit your preference Choose from 11 easy ways to send info to the video. Pick your favorite method and whether you want to send details before, during, or just 2 seconds before the prediction time, it's all possible. Just set it once and enjoy! Easy Mode An extra user-friendly interface that enables you to set up a new video in just 2-3 minutes, by setting only 3 parameters. Generic Videos The app includes a few ready-to-perform videos prepared by leading magicians. Just learn the input method (1 minute) and you are ready to perform. Users are required to pay for a Lifetime access in order to use the app. - Lifetime Access. - Lifetime duration. - 249$ Privacy policy and terms of use: https://www.cobra-magic.com/pages/privacy-policy-of-duality-3 Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Benham's Disk at none against Duality Pro's 6. Benham's Disk also leads on iOS requirement (8.0 vs 12.0). Duality Pro's advantage is update cadence (monthly vs every 4 months). On price, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Duality Pro sells 5 in-app purchases, starting at $12.99 per month. Benham's Disk asks for nothing beyond the download.
Benham's Disk ships an update every 4 months, Duality Pro monthly. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.
| Parameter | Benham's Disk | Duality Pro |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.1 (19 ratings) — better |
| Positive reviews | — | 55.6% of reviews |
| Number of ratings | — | 19 — better |
| Update frequency | Every 4 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 13 MB | 360 MB |
| Age rating | 4+ | 4+ |
| Developer | SoftUmeYa, LLC. | Yaniv Levy |
In-app purchases
Benham's Disk
No in-app purchases
Duality Pro
- Duality Pro$12.991 Month
- 3D Dash$0.99
- Extension features$149.99
- Pro upgrade$149.99
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- Lifetime Access2 variants$249.99
Questions
Is Benham's Disk free?
Is Duality Pro free?
Do Benham's Disk or Duality Pro have ads?
Which is updated more often, Benham's Disk or Duality Pro?
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