RRD电子光栅 vs 音频助手
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RRD电子光栅
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基于手机端的电子光栅应用
音频助手
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欢迎使用音频助手，您可以进行房间声学特性测量,记录并比较多次测量的结果，声级计（SPL）、实时分析仪（RTA）、扫频及指定频率音频信号发生器（GENERATOR）。并且支持连接声卡搭配专业测量麦克风进行更专业的测量，也可以采用蓝牙连接进行简易测量。
Screenshots
Verdict
RRD电子光栅 and 音频助手 are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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.
RRD电子光栅 ships an update every 4 weeks, 音频助手 monthly. Both last shipped on November 7, 2026.
| Parameter | RRD电子光栅 | 音频助手 |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 weeks — better | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 11 MB | 33 MB |
| Age rating | 4+ | 4+ |
| Developer | RR Donnelley China Holding Co., Ltd. | Shenzhen Yuemei Technology Co.,Ltd |
In-app purchases
RRD电子光栅
No in-app purchases
音频助手
No in-app purchases
