Atomus 3D vs 字习 Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Multi-touch display
- Customizable particle effects
- Dynamic 3D visuals
- Multiple color modes
- High frame rate performance
Read full descriptionHide 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
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.
- Realistic brush and rice paper simulation
- Adjustable brush size
- Undo/redo functionality
- Brush flying-white simulation
- Save works to photo library
- Replay writing process
Read full descriptionHide 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
Verdict
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
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.
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.
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.
| Parameter | Atomus 3D | 字习 Pro |
|---|---|---|
| Price | $3.99 | $1.99 — better |
| Rating | 4.1 (27 ratings) | 4.2 (6 ratings) — better |
| Positive reviews | 65.0% of reviews — better | 60.0% of reviews |
| Number of ratings | 27 — better | 6 |
| Update frequency | Every 6 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 12.0 — better |
| Further details — not scored | ||
| Size | 118 MB | 42 MB |
| Age rating | 4+ | 4+ |
| Developer | SungLab Inc | 金磊 李 |
Customer experience
Atomus 3D
字习 Pro
In-app purchases
Atomus 3D
No in-app purchases
字习 Pro
No in-app purchases









