dB vs SMART FANS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
dB
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Using dB-Tester, you can control the recording, reading, deleting and other functions of the meter via bluetooth connection. The parameters such as the noise value returned by the meter can be drawn into a curve, so that the user can directly see the variation trend of the parameters. The alarm function can alert the user, accurate and practical.
SMART FANS
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个人开发的家电APP，此APP为替代遥控器用，数据传输无需穿透网络，也不需要用户登录注册，用户只需要安装应用，在手机端开启蓝牙功能，即可遥控风扇，完成配置对应的功能。
Screenshots
Verdict
The clearest difference is update cadence: SMART FANS at every 3 days against dB's every 3 weeks. dB's advantage is iOS requirement (11.0 vs 13.0). 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.
dB ships an update every 3 weeks, SMART FANS every 3 days. The most recent releases landed on October 24, 2026 and October 17, 2026 respectively.
| Parameter | dB | SMART FANS |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 weeks | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 11.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 6 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | Shenzhen Jumaoyuan Science and Technology Co., Ltd. | 文俊 雷 |
In-app purchases
dB
No in-app purchases
SMART FANS
No in-app purchases
