StrongLED vs 写字无忧
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
StrongLED
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OM – Light in Spirit OM is the “cosmic sound” when the world was created and light is one of the most powerful forces in the Universe.StrongLED realized the intimate link between OM and Light. By bringing them together, the unique OM Smart bulb was born. Based on the research and assessment by professionals in various fields of electronics, optics and control; we spent over a year to adjust, fine tune and measure the light so that OM can produce amazing effects close to natural lights. From light to heart, StrongLED not only lights up your life, we bring you Happiness& Quality of Life. OM Key Features - Exquisite Design, High-quality built using Philips Lumileds LEDs. - Connect via Bluetooth up to 15 meters. - Control up to 6 OM bulbs. 8 Light Effects 1. General illumination with adjustable color temperature(2700K ~3800K) 2. Mood Lightings - X user’s defined lighting scenes 3. Favorite Color – seamless Color Wheel choice of 1 billion colors 4. Picture to Color – reminiscence through color, hue and intensity 5. Light sync to Music - color dancing to frequencies and rhythm 6. Light sync to Voice – vocal visualization through color light 7. Light sync to Images - Real-time image capture on camera 8. Sleep Inducing
写字无忧
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写字无忧 支持回放每个汉字的书写过程，还原书写轨迹 采用领先的AI智能评分系统，对书写的汉字进行评价打分 左右翻阅，契合人们的阅读习惯
Screenshots
Verdict
The clearest difference is update cadence: 写字无忧 at monthly against StrongLED's every 4 months. On price, ads, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
StrongLED ships an update every 4 months, 写字无忧 monthly. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.
| Parameter | StrongLED | 写字无忧 |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 8.0 — better | 9.0 |
| Further details — not scored | ||
| Size | 66 MB | 180 MB |
| Age rating | 4+ | 4+ |
| Developer | Grand Canyon Led Lighting Systems (Suzhou) Co.,Ltd. | 瑞 许 |
In-app purchases
StrongLED
No in-app purchases
写字无忧
No in-app purchases
