Decibel Meter vs iSecretWorld
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Decibel Meter
Transform your phone into a professional-grade decibel meter for real-time noise detection. Features advanced algorithms, noise visualization, and recording capabilities for comprehensive sound analysis.
- Military-grade algorithm
- Professional GB weighted detection
- Noise recording
- Noise classification system
- AI ambient noise visualization
- Noise dosimeter
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The decibel meter 3 is shocking! This time, your mobile phone is a professional decibel testing instrument that can provide you with noise detection anytime, anywhere. Decibel Meter 3 Features: - Brand new military-grade algorithm - Brand new UI page design - Brand new noise rendering animation - Brand new professional-level GB weighted detection engine - Brand new noise recording capability - New professional-grade noise classification system - Brand new AI real-time ambient noise source visualization engine - Brand new noise dosimeter we continue to pay attention to your health More features will be launched in subsequent versions, so stay tuned! *Note: Although we provide high-precision algorithms, due to the limitations of hardware specifications of mobile devices such as mobile phones, it cannot completely replace professional equipment. The data is for reference only. Get subscription content: 1. Pure and ad-free 2. The decibel test is more sensitive and accurate 3. Free access to all toolkits *Our standard subscription options are: Provide continuous subscription after VIP free trial, VIP continuous weekly subscription, VIP continuous monthly subscription, and VIP continuous subscription annual subscription options. During the subscription period, you can permanently say goodbye to the interruption of advertisements; the decibel test is more sensitive and accurate; all toolkits are used for free; the priority experience of more functions is obtained. * Subscription fees will be charged to your iTunes account at confirmation of purchase and at the beginning of each renewal cycle. Subscriptions that include a free trial period will automatically renew to a paid subscription. You can cancel your subscription or free trial in iTunes settings at least 24 hours before the end of the free trial period. Cancellation of subscription will take effect after the last day of the current subscription period. Once the cancellation of subscription takes effect, your subscription service rights will become invalid. Privacy Policy: ttps://pages.flycricket.io/fen-bei-ce-shi-yi/privacy.html User Agreement: https://pages.flycricket.io/fen-bei-ce-shi-yi/terms.html
iSecretWorld
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专业电商 BI 数据分析管理平台,覆盖渠道、商品、推广、监控四大核心模块,专为电商商家、运营管理者打造。专业电商 BI 数据分析管理平台,覆盖渠道、商品、推广、监控四大核心模块,专为电商商家、运营管理者打造。 渠道模块:全渠道流量、营收、占比多维分析,清晰看透各渠道投产效果 商品模块:单品销量、毛利、动销排行,智能挖掘爆款与滞销商品 推广模块:投放费用、转化率、引流效果复盘,助力精准投放降本增效 监控模块:经营数据实时刷新,异常数据预警,随时随地掌握店铺动态 极简可视化报表,数据清晰易懂,不用电脑、不用复杂表格,手机就能完成全链路电商经营分析,做数据驱动的智慧运营。
Screenshots
Verdict
The clearest difference is in-app purchases: iSecretWorld at none against Decibel Meter's 9. iSecretWorld also leads on ads (none vs shown) and update cadence (daily vs every 2 weeks). On price, device support and iOS requirement 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. Decibel Meter sells 8 in-app purchases, starting at $1.99 per 7 days. iSecretWorld asks for nothing beyond the download.
Decibel Meter ships an update every 2 weeks, iSecretWorld daily. The most recent releases landed on November 11, 2026 and October 31, 2026 respectively.
| Parameter | Decibel Meter | iSecretWorld |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (907 ratings) — better | — |
| Positive reviews | 56.8% of reviews | — |
| Number of ratings | 907 — better | — |
| Update frequency | Every 2 weeks | Daily — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13 | 13.0 |
| Further details — not scored | ||
| Size | 107 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | 文波 曾 | 建华 姚 |
Bugs and requests
Decibel Meter
Reported bugs
4 issues- Decibel readings capped at 90 dB
- Displaying incorrect address information
- Crashing or freezing on launch
- Showing 70 dB in a completely silent room
Requested features
3 requests- Landscape mode for iPad
- Ability to detect sounds above 90 dB
- Option to disable ads or switch to a paid version
iSecretWorld
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Decibel Meter
- Free trail then subscribe3 Days trial$1.997 Days
- 分贝测试仪专业版2 variants$2.993 Months
- 分贝仪专业版3 Days trial$2.997 Days
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- 分贝测试仪专业版$4.496 Months
- Pro Monthly Subscription3 Days trial$5.491 Month
- 分贝测试仪专业版$25.991 Year
- Remove advertisement$0.99
- 终身尊享权益$29.99
iSecretWorld
No in-app purchases









