Comparison

Mandel Draw vs Stars Units Sizes Objects

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

Head to head
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.

About

Stars Units Sizes Objects

Explore the vastness of the universe, from the smallest particles to the largest cosmic structures. Compare object sizes, view detailed images, and perform unit conversions across a wide range of astronomical scales. Learn about stars, galaxies, and the incredible distances between them.

Highlights
  • Compare object sizes
  • View object images
  • Pinch/Zoom and Pan images
  • Unit conversion for distances
  • Explore scales from Planck length to observable universe
  • Learn about stars and galaxies
Features
Read full description

Size of the smallest to largest objects and stars. Compare the size of objects in the universe. Object images. Pinch/Zoom image. Pan/Move image. Rotate image. Double tap to reset an image. From the smallest to the largest one. From planck length to observable universe. From Yoctometre, Zeptometre, Attometre, Femtometre, Picometre, Nanometre, Micro, Millimetre, Centimetre, Metre, KiloMetre, Lightyear, Parsecs, Billion Lightyears to 93 Billion Lightyears. Size of objects, particles, atoms, cells, stars and galaxies. Get to know the stars. Get to know the spaces. get to know the universe. How small is this world. How big is the universe. And How great is the creator. How far is the star distance from earth. Two way 18 distance unit conversion. planck length, yoctometer, zeptometer, attometer, femtometer, picometre, nanometre, micrometre, Millimeter, Centimeter, Meter, Kilometer, Inch, Foot, Mile, Astronomical, Lightyear, Parsecs. Perform auto conversion when picker is changed. Share conversion result. Reset unit convertor.

Screenshots

Mandel Draw4 screens
Stars Units Sizes Objects4 screens

Verdict

The call

The clearest difference is in-app purchases: Stars Units Sizes Objects at none against Mandel Draw's 1. Stars Units Sizes Objects also leads on review sentiment (80% vs 53%) and iOS requirement (11.0 vs 16.0). Mandel Draw's advantage is ads (none vs shown) and update cadence (weekly vs every 4 months). On price 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. Stars Units Sizes Objects asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Mandel Draw holds the better App Store score, 4.5 against 4.2. That said, the two scores are not equally well evidenced: Mandel Draw has 147 ratings behind it against 5, so its average is the more settled of the two. Written reviews complicate that: 53% of Mandel Draw's written reviews are positive against 80% of Stars Units Sizes Objects's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Mandel Draw ships an update weekly, Stars Units Sizes Objects every 4 months. The most recent releases landed on October 18, 2026 and September 22, 2026 respectively.

Scorecard8 real differences · 2 level
Mandel Draw versus Stars Units Sizes Objects: the parameters behind the verdict, then further details
ParameterMandel DrawStars Units Sizes Objects
PriceFreeFree
Rating4.5 (147 ratings) — better4.2 (5 ratings)
Positive reviews53.3% of reviews80.0% of reviews — better
Number of ratings147 — better5
Update frequencyWeekly — betterEvery 4 months
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.011.0 — better
Further details — not scored
Size22 MB124 MB
Age rating4+4+
DeveloperKouji MoriMudarmeen Munlin

Customer experience

Mandel Draw

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

Stars Units Sizes Objects

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive80.0%
Neutral0.0%
Negative20.0%

In-app purchases

1 purchases

Mandel Draw

One-time1
  • Unlock$1.99
None

Stars Units Sizes Objects

No in-app purchases

Questions

Is Mandel Draw free?
Mandel Draw is free to download, with in-app purchases available.
Is Stars Units Sizes Objects free?
Stars Units Sizes Objects is free to download, with no in-app purchases.
Which has better reviews, Mandel Draw or Stars Units Sizes Objects?
Mandel Draw is rated higher. Mandel Draw averages 4.5 out of 5 from 147 ratings, while Stars Units Sizes Objects averages 4.2 from 5 ratings.
Do Mandel Draw or Stars Units Sizes Objects have ads?
Stars Units Sizes Objects shows ads; Mandel Draw does not.
Which is updated more often, Mandel Draw or Stars Units Sizes Objects?
Mandel Draw ships an update weekly, and Stars Units Sizes Objects every 4 months. Most recently, Mandel Draw was updated on October 18, 2026 and Stars Units Sizes Objects on September 22, 2026.

Other comparisons