Comparison

Fractals Julia vs Rotation

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

Head to head
About

Fractals Julia

Features
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Applicazione che permette di esplorare l'insieme di Julia partendo dalla scelta della costante C nell'insieme di Manderbolt. Effetti grafici molto particolari si possono ottenere giocando sul numero di bit con cui sono codificati i colori che può assumere un valore da 3 fino a 256 bit. È inoltre possibile ottenere tutte e 6 le combinazioni di colori (RGB, RBG, GRB, GBR, BRG, BGR) che diventano 12 se spuntiamo la casella di inversione colori. Dato che gli effetti grafici più interessanti si ottengono scegliendo la costante C nel set Manderbolt sul bordo del set verso l'esterno, potete ingrandire quanto volete scegliendo il punto più vicino possibile ai bordi. Allo stesso modo si può anche ingrandire quanto vuole sul set Julia per vedere interessanti dettagli che si intravedono dalla figura completa nell'intervallo -2, 2 per la parte reale e -2i, 2i per la parte immaginaria . Buona esplorazione dei frattali di Julia.

About

Rotation

Features
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Rotation is a visual art application based on the phenakistoscope principle, allowing you to easily create fascinating dynamic visual effects. By placing images on a rotating disc and utilizing the persistence of vision phenomenon, it produces magical visual experiences. 【Main Features】 • 77 Pre-installed Images: The app includes various specially selected phenakistoscope and persistence of vision effect images, ready to use • Custom Images: Import your own images from photo library to create personalized visual effects • Flexible Parameter Adjustment: Control frame rate, rotation angle, rotation direction, image size, and position • Rich Preset Styles: Offers five preset styles including modern, classic, dynamic, natural, and abstract • Multi-language Support: Compatible with 33 languages, including English, Chinese, Japanese, Korean, and more 【Parameter Details】 • Frame Rate: Controls the number of frames displayed per second, ranging from 1-60 fps • Rotation Angle: Adjusts the rotation angle of each frame, ranging from 1°-180° • Rotation Direction: Choose between clockwise or counterclockwise rotation • Image Size: Controls the display ratio of images on the disc, ranging from 100%-300% • Alignment: Sets the position of images on the disc, supporting both horizontal and vertical alignment 【Persistence of Vision】 Persistence of vision is a physiological characteristic of the human eye. When we see an image, the impression formed on the retina doesn't disappear immediately but persists for a short period (about 0.1-0.4 seconds). This phenomenon allows us to perceive rapidly presented static images as continuous smooth motion. 【Phenakistoscope Principle】 The phenakistoscope is an optical toy invented in the 19th century that creates visual illusions through rotation, reflection, and optical principles. Combined with the persistence of vision effect, when the disc rotates rapidly, it creates a superimposed effect on the retina, producing stunning symmetrical and fractal patterns. 【Application Scenarios】 • Visual Art Creation: Designers can create unique visual effects • Educational Demonstrations: Teachers can explain the principle of persistence of vision • Mental Relaxation: Watching the rotation effects can help relax the mind • Entertainment: Add fun to family gatherings or friend meetups 【Usage Tips】 • For phenakistoscope effect images, it's recommended to set the rotation angle to 360° divided by the number of evenly divided portions in the image • Adjusting the image size to 200%-300% can achieve a more concentrated visual effect • Try different rotation directions to produce different visual experiences Whether you're a visual art enthusiast, designer, or just someone who enjoys interesting visual experiences, Rotation can bring you a unique visual treat. Download the app and start your phenakistoscope visual journey!

Screenshots

Fractals Julia4 screens
Rotation4 screens

Verdict

The call

The clearest difference is price: Fractals Julia at $0.99 against Rotation's $3.99. Fractals Julia also leads on update cadence (daily vs every 3 days) and device support (4 vs 2). On ads and in-app purchases 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

Fractals Julia costs $0.99 and Rotation $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Fractals Julia ships an update daily, Rotation every 3 days. The most recent releases landed on October 15, 2026 and October 30, 2026 respectively.

Scorecard4 real differences · 2 level
Fractals Julia versus Rotation: the parameters behind the verdict, then further details
ParameterFractals JuliaRotation
Price$0.99 — better$3.99
Update frequencyDaily — betterEvery 3 days
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad
Requires iOS15.0 — better17
Further details — not scored
Size257 MB37 MB
Age rating4+4+
DeveloperGiorgio Pieroni思明 陈

In-app purchases

None

Fractals Julia

No in-app purchases

None

Rotation

No in-app purchases

Questions

Is Fractals Julia free?
Fractals Julia costs $0.99, with no in-app purchases.
Is Rotation free?
Rotation costs $3.99, with no in-app purchases.
Do Fractals Julia or Rotation have ads?
Neither Fractals Julia nor Rotation shows ads.
Which is updated more often, Fractals Julia or Rotation?
Fractals Julia ships an update daily, and Rotation every 3 days. Most recently, Fractals Julia was updated on October 15, 2026 and Rotation on October 30, 2026.

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