Comparison

Curved Spaces vs Mandel Draw

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Curved Spaces

Explore multi-connected universes with this flight simulator. Visualize how light wraps around complex spaces, creating repeating crystalline patterns. It's a tool for students and researchers in topology and cosmology.

Highlights
  • Multi-connected universe simulation
  • Visualizes light wrapping
  • Crystalline pattern display
  • Topology research tool
  • Cosmology research tool
  • Educational for 3-manifolds
Read full description

Curved Spacess is a flight simulator for multi-connected universes. Because light itself wraps around such a space, inhabitants see their universe’s contents repeating in a crystalline pattern, like a hall of mirrors but with no reflection. Curved Spaces is intended for undergraduates and graduate students studying 3‑manifolds, and has also found use as a research tool in topology and cosmology. Recreational math enthusiasts may instead prefer Torus Games, which offers 3D Mazes and 3D Tic-Tac-Toe in a variety of multi-connected 3D spaces, along with games on multi-connected 2D surfaces.

About

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.

Highlights
  • 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
Features
Read full description

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

Curved Spaces4 screens
Mandel Draw4 screens

Verdict

The call

The clearest difference is review sentiment: Curved Spaces at 92% against Mandel Draw's 53%. Curved Spaces also leads on in-app purchases (none vs 1) and rating (4.8 vs 4.5). Mandel Draw's advantage is update cadence (weekly vs every 5 months) and ratings volume (210 vs 26). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Mandel Draw sells 1 one-off in-app purchase. Curved Spaces asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Curved Spaces holds the better App Store score, 4.8 against 4.5. That said, the two scores are not equally well evidenced: Mandel Draw has 210 ratings behind it against 26, so its average is the more settled of the two. Written reviews point the same way: 92% of Curved Spaces's written reviews are positive against 53% of Mandel Draw's.

UpkeepUpdate frequency

Curved Spaces ships an update every 5 months, Mandel Draw weekly. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.

Scorecard7 real differences · 3 level
Curved Spaces versus Mandel Draw: the parameters behind the verdict, then further details
ParameterCurved SpacesMandel Draw
PriceFreeFree
Rating4.8 (26 ratings) — better4.5 (210 ratings)
Positive reviews92.3% of reviews — better53.3% of reviews
Number of ratings26210 — better
Update frequencyEvery 5 monthsWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS14.0 — better16.0
Further details — not scored
Size11 MB22 MB
Age rating4+4+
DeveloperJeff WeeksKouji Mori

Customer experience

Curved Spaces

All ratings25 ratings
Positive96.0%
Neutral0.0%
Negative4.0%
Written reviews13 reviews
Positive92.3%
Neutral0.0%
Negative7.7%

Mandel Draw

All ratings147 ratings
Positive87.1%
Neutral4.8%
Negative8.2%
Written reviews30 reviews
Positive53.3%
Neutral20.0%
Negative26.7%

In-app purchases

None

Curved Spaces

No in-app purchases

1 purchases

Mandel Draw

One-time1
  • Unlock$1.99

Questions

Is Curved Spaces free?
Curved Spaces is free to download, with no in-app purchases.
Is Mandel Draw free?
Mandel Draw is free to download, with in-app purchases available.
Which has better reviews, Curved Spaces or Mandel Draw?
Curved Spaces is rated higher. Curved Spaces averages 4.8 out of 5 from 26 ratings, while Mandel Draw averages 4.5 from 210 ratings.
Do Curved Spaces or Mandel Draw have ads?
Neither Curved Spaces nor Mandel Draw shows ads.
Which is updated more often, Curved Spaces or Mandel Draw?
Curved Spaces ships an update every 5 months, and Mandel Draw weekly. Most recently, Curved Spaces was updated on October 24, 2026 and Mandel Draw on October 29, 2026.

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