Cosmic Eye vs Mandel Draw
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Cosmic Eye
Explore the universe from subatomic particles to the observable cosmos with incredible zoom capabilities. View real astronomical and microscopic photographs alongside stunning computer-generated models. This app offers a journey through scales inspired by iconic scientific visualizations.
- Enormous zoom factors
- Subatomic to cosmic scales
- Real photographs
- Computer model renderings
- Inspired by 'Powers of Ten'
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Cosmic Eye allows to user to zoom in and out of a preset image, by enormous zoom factors, reaching down the smallest known sub-atomic particles and up to the entire observable universe. Where possible, the app displays real photographs obtained with modern objectives, telescopes, and microscopes. Other views are phenomenal renderings of state-of-the-art computer models. This app draws inspiration from a progression of increasingly accurate graphical representations of the scales of our Universe, including the classical movie “Powers of Ten” (1977), directed by Charles and Ray Eames.
Mandel Draw
Explore the infinite beauty of fractals with this intuitive drawing app. Generate Mandelbrot and Julia sets with numerous functions and color palettes. Enjoy simple touch controls for navigation and advanced settings for high-resolution output and iCloud syncing.
- Mandelbrot and Julia set generation
- 80+ fractal functions
- 20+ color palettes
- Intuitive touch controls (drag, pinch, tap)
- High-resolution output
- iCloud Sync for favorites and palettes
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Mandel Draw is an application that allows you to enjoy fractals, Mandelbrot sets and filled Julia sets, in a fast and comfortable way. The app allows you to draw an infinite number of fractal images from up to 80 different functions, 20+α color palettes, and freely configurable Julia parameters. Operation is simple. Drag to move, pinch to zoom in and out. Double- and triple-tap operations are also available. Convenient settings are also available. - Use DF64 operation: Double the float operation to make it possible to zoom in more. (Disabled in the Appendix 1,2) - Select render version: Two types of rendering methods can be selected. - Display coordinates and magnification: The current coordinates and magnification will be displayed on the screen. - Output detailed information: Add detailed information to the text when sharing. - High-resolution output: Outputs at 4 times the vertical and horizontal resolution when sharing. - iCloud Sync: Share favorites and My Palette with another iPhone or iPad. In addition, all functions are available when unlocked with in-app purchase. 1) All functions are selectable 2) All palettes can be selected 3) Up to 2000 favorites can be saved 4) Maximum number of My Palettes that can be saved is now 30. Now, please enjoy the wonderful and mysterious world of fractals. What is a fractal? Simply put, a fractal is a self-similar figure that does not lose its complexity no matter how much it is enlarged. (Though computers have their limitations.) There are various fractal shapes, such as the Koch curve, Sierpinski's gasket, and Menger's sponge. The Mandelbrot set and the filled Julia set are fractals drawn computationally on the complex plane.
Screenshots
Verdict
The clearest difference is price: Mandel Draw at Free against Cosmic Eye's $0.99. Mandel Draw also leads on rating (4.5 vs 2.9) and update cadence (weekly vs every 6 weeks). Cosmic Eye's advantage is iOS requirement (10.0 vs 16.0). On ratings volume, ads, in-app purchases and monetization model 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
Mandel Draw is free to download; Cosmic Eye costs $0.99 up front. Cosmic Eye sells 1 one-off in-app purchase and Mandel Draw sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Mandel Draw holds the better App Store score, 4.5 against 2.9. Both are backed by a comparable volume of ratings — 89 and 209 respectively. Written reviews point the same way: 38% of Cosmic Eye's written reviews are positive against 53% of Mandel Draw's.
Cosmic Eye ships an update every 6 weeks, Mandel Draw weekly. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.
| Parameter | Cosmic Eye | Mandel Draw |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 2.9 (89 ratings) | 4.5 (209 ratings) — better |
| Positive reviews | 38.2% of reviews | 53.3% of reviews — better |
| Number of ratings | 89 | 209 — better |
| Update frequency | Every 6 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 10.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 42 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Danail Obreschkow | Kouji Mori |
Customer experience
Cosmic Eye
Mandel Draw
Bugs and requests
Cosmic Eye
Reported bugs
7 issues- Upgrade not working
- In-app purchase not working after payment
- App crashes on load
- Cannot move camera freely
- Low resolution graphics
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- Only loads in portrait mode
- Banner ad present despite screenshots showing no ads
Requested features
17 requests- Zoom out of the universe and into the atomic nucleus
- Zoom in to Planck length and out to beyond the universe
- Make it so we can zoom out of the universe and very far into the atomic nucleus
- Make it so we can zoom in all the way to Planck length and all the way out to Beyond the universe
- Make it so we can zoom out of the universe and very far into the atomic nucleus
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- Make it so we can zoom in all the way to Planck length and all the way out to Beyond the universe
- Add multiverse functionality
- Add other universes
- Add our universe after zooming out of the cosmic web
- Turn off automatic zoom
- Make it possible to zoom without it zooming automatically
- Make it possible to turn off resetting at the end
- Make the speed slower
- Allow replacement of the initial photo with a photo of loved ones
- Slow down the display significantly for screensaver use
- Disable auto-lock for screensaver use
- Add more detailed sections between jumps in scale
Mandel Draw
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Cosmic Eye
- Cosmic Eye ProFree
Mandel Draw
- Unlock$1.99
Questions
Is Cosmic Eye free?
Is Mandel Draw free?
Which has better reviews, Cosmic Eye or Mandel Draw?
Do Cosmic Eye or Mandel Draw have ads?
Which is updated more often, Cosmic Eye or Mandel Draw?
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