Comparison

Atomus 3D vs 字习 Pro

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

Head to head
About

Atomus 3D

This interactive visualizer offers a dynamic and artistic experience. Control a universe with multi-touch gestures, customize particle effects, and enjoy vibrant color modes. It's designed to inspire creativity and provide a visually stunning escape.

Highlights
  • Multi-touch display
  • Customizable particle effects
  • Dynamic 3D visuals
  • Multiple color modes
  • High frame rate performance
Features
Read full description

# ATOMUS 3D — A Living 3D Particle Universe in Your Hands Touch space. Shape light. Watch depth come alive. ATOMUS 3D transforms your screen into a living three-dimensional particle universe where thousands of particles move through space, forming luminous structures that feel alive, immersive, and endlessly satisfying. Every touch creates evolving depth, floating motion, and hypnotic visual patterns that shift like living sculpture beneath your fingertips. Designed for visual relaxation, creative focus, quiet exploration, and sensory immersion, ATOMUS 3D offers a unique experience between digital art and meditation. ## Why users love ATOMUS 3D • Immersive 3D particle interaction • Floating depth and evolving motion • Ideal for visual relaxation and creative focus • A hypnotic experience that always feels new ## Inspired by Living Forms ATOMUS 3D creates structures inspired by: • galaxies • auroras • waves • spirals • atomic forms • luminous energy ## Real-Time Experience • Smooth 60 FPS rendering • Multi-touch interaction • Adjustable particle size and movement • Rich spatial depth ## A Different Kind of Calm ATOMUS 3D is not simply something to watch — it is something to slowly explore, shape, and experience. ## Support If you have ideas, questions, or feedback, I would love to hear from you. sunglab@gmail.com http://www.sunglab.com

About

字习 Pro

Experience the art of Chinese calligraphy digitally with realistic brush and rice paper simulation. This tool brings traditional writing to the modern age, allowing you to create and save your own brush calligraphy works anytime, anywhere.

Highlights
  • Realistic brush and rice paper simulation
  • Adjustable brush size
  • Undo/redo functionality
  • Brush flying-white simulation
  • Save works to photo library
  • Replay writing process
Features
Read full description

ZiXi Pro realistically simulated the writing effect of Chinese brush + rice paper, the focus is on bringing the traditional Chinese calligraphy art to the digital age. Chinese calligraphy is an ancient character writing art, which from oracle bone inscriptions to cursive, calligraphy has always exuded artistic charm. Chinese calligraphy is a very unique visual art, and the unique cultural beauty can be experienced and felt by more people with the help of digital technology! The WebGPU-based (wgpu-rs) brush engine uses fluid simulation to achieve the unique expression of the brush. You can use it to experience the splash of Chinese calligraphy anytime, anywhere, and create brush calligraphy works. Features: * A Chinese traditional calligraphy writing tool; * Adjustable brush size; * Undo / redo; * Brush flying-white simulate; * Write Chinese new year "福"; * Appreciation (replaying the writing process); * Save works to Save your work to the photo library; * Support for iPad Pro; For a more enjoyable calligraphy effect, it is recommended to use on iPhone6s & iPad Air2 and above.

Screenshots

Atomus 3D4 screens
字习 Pro4 screens

Verdict

The call

The clearest difference is update cadence: 字习 Pro at weekly against Atomus 3D's every 6 months. 字习 Pro also leads on price ($1.99 vs $3.99) and iOS requirement (12.0 vs 15.6). Atomus 3D's advantage is ratings volume (27 vs 6). On rating, review sentiment, 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

Atomus 3D costs $3.99 and 字习 Pro $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.1 for Atomus 3D against 4.2 for 字习 Pro. Both are backed by a comparable volume of ratings — 27 and 6 respectively. Written reviews are what separate them: 65% of Atomus 3D's written reviews are positive against 60% of 字习 Pro's.

UpkeepUpdate frequency

Atomus 3D ships an update every 6 months, 字习 Pro weekly. The most recent releases landed on September 11, 2026 and September 17, 2026 respectively.

Scorecard4 real differences · 6 level
Atomus 3D versus 字习 Pro: the parameters behind the verdict, then further details
ParameterAtomus 3D字习 Pro
Price$3.99$1.99 — better
Rating4.1 (27 ratings)4.2 (6 ratings) — better
Positive reviews65.0% of reviews — better60.0% of reviews
Number of ratings27 — better6
Update frequencyEvery 6 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.612.0 — better
Further details — not scored
Size118 MB42 MB
Age rating4+4+
DeveloperSungLab Inc金磊 李

Customer experience

Atomus 3D

All ratings27 ratings
Positive77.8%
Neutral3.7%
Negative18.5%
Written reviews20 reviews
Positive65.0%
Neutral15.0%
Negative20.0%

字习 Pro

All ratings6 ratings
Positive66.7%
Neutral16.7%
Negative16.7%
Written reviews20 reviews
Positive60.0%
Neutral20.0%
Negative20.0%

In-app purchases

None

Atomus 3D

No in-app purchases

None

字习 Pro

No in-app purchases

Questions

Is Atomus 3D free?
Atomus 3D costs $3.99, with no in-app purchases.
Is 字习 Pro free?
字习 Pro costs $1.99, with no in-app purchases.
Which has better reviews, Atomus 3D or 字习 Pro?
字习 Pro is rated higher. Atomus 3D averages 4.1 out of 5 from 27 ratings, while 字习 Pro averages 4.2 from 6 ratings.
Do Atomus 3D or 字习 Pro have ads?
Neither Atomus 3D nor 字习 Pro shows ads.
Which is updated more often, Atomus 3D or 字习 Pro?
Atomus 3D ships an update every 6 months, and 字习 Pro weekly. Most recently, Atomus 3D was updated on September 11, 2026 and 字习 Pro on September 17, 2026.

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