Decibel：Sound Meter vs 全能扫描仪
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Decibel：Sound Meter
This application offers real-time decibel measurements with high precision. It provides detailed reports, location data, and the ability to share or export audio measurements. Users can also utilize a real-time decibel camera feature.
- Real-time decibel measurement
- High precision
- Location data
- Decibel camera
- Measurement reports
- Data sharing
- Audio data export
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Decibel：Sound Meter is an app that can provide real-time decibel data, with the following features: -High precision measurement, real-time measurement -Provide location -Real time decibel camera -Provide detailed measurement reports -One click sharing of measurement data -Support for exporting audio data I Payment: The user deducts the payment through their iTunes account and makes the payment upon confirmation of purchase II Renewal: The user's iTunes account will be charged within 24 hours before expiration, increasing the corresponding subscription period III Cancel Renewal: To cancel the renewal, go to "iTunes Store and App Store" ->click on "App ID" to enter the "Account Settings" page, click on "Subscription", and choose to unsubscribe IV Privacy Agreement: https://docs.qq.com/doc/DVURkSmJKSll0dXBW 5、 Terms of Use: https://docs.qq.com/doc/DVXB3TWtxSUt2Rk1R
全能扫描仪
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全能扫描仪-手机全能图片扫描仪能把你的手机变成一个强大的扫描仪，扫描各种文件，包括发票、证件等。它可以快速提取图片上的文字，把各种文档转为PDF，适应于多种场景。 主要功能 扫描文件，扫描证件，扫描发票 一键扫描成PDF文件，并支持自定义裁剪、排序和添加照片 PDF转换 支持一键Word转PDF、Excel转PDF、PPT转PDF、TXT转PDF、图片转PDF 提取文字 一键识别图片上的文字并提取，并支持将文字导出为txt AR测量 利用AR测量物体的长度，并自动保存测量记录 隐私政策：https://p.kdocs.cn/s/NWHMHFRDAAQDU 使用条款：https://p.kdocs.cn/s/DODMHFRDACAGU
Screenshots
Verdict
Decibel：Sound Meter and 全能扫描仪 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. Decibel：Sound Meter sells 3 in-app purchases, starting at $3.99 per 7 days and 全能扫描仪 sells 4 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Decibel：Sound Meter ships an update every 11 days, 全能扫描仪 weekly. The most recent releases landed on November 4, 2026 and October 25, 2026 respectively.
| Parameter | Decibel：Sound Meter | 全能扫描仪 |
|---|---|---|
| Price | Free | Free |
| Rating | 3.8 (6 ratings) — better | — |
| Number of ratings | 6 — better | — |
| Update frequency | Every 11 days | Weekly — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 13.0 | 13.0 |
| Further details — not scored | ||
| Size | 33 MB | 30 MB |
| Age rating | 9+ | 9+ |
| Developer | ZHHUALIUON INC | Bitterroot Glen LLC |
In-app purchases
Decibel：Sound Meter
- Weekly membership3 Days trial$3.997 Days
- Monthly membership3 Days trial$4.991 Month
- Annual membership3 Days trial$14.991 Year
全能扫描仪
- 周会员3 Days trial$3.997 Days
- 周会员$3.99
- 月会员$5.99
- 年会员$14.99
