美儿SMA vs 灰板
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
美儿SMA
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美儿SMA是一个整合式公益服务支持平台。可帮助您及时便捷地获取SMA（脊髓性肌萎缩症）疾病科普、患者诊治、日常管理等相关资讯及患者关爱与互动支持。
灰板
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灰板打造了中外合办大学的专属校园社交平台，我们的应用将社交的艺术发挥到极致，并且提供了极其便利的校园生活工具，为在校学生的学习赋能，极大提升学生的生产力。
Screenshots
Verdict
The clearest difference is iOS requirement: 美儿SMA at 11.0 against 灰板's 13.4. On price, update cadence, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 15, 2026 and October 3, 2026 respectively.
| Parameter | 美儿SMA | 灰板 |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 11.0 — better | 13.4 |
| Further details — not scored | ||
| Size | 31 MB | 45 MB |
| Age rating | 17+ | 4+ |
| Developer | Meier Advocacy & Support Center for SMA | Shenqian Technology (Suzhou) Co., Ltd. |
In-app purchases
美儿SMA
No in-app purchases
灰板
No in-app purchases
