Comparison

CalendarIn vs Decibel Meter dB

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

CalendarIn

Features
Read full description

【Real-time cloud synchronization】Data is safely synchronized to iCloud in real time, allowing you to view your schedule anytime and anywhere. 【Clear grasp of events】Notes are directly displayed below the date. The arrangements for each day are clearly visible, and you will no longer miss any important matters. 【Simple and fast operation】Just tap the date to quickly add or edit your schedule and conveniently manage your schedule. 【Timed reminder function】Customize the reminder time and notify you on time to ensure that each task is completed on time. 【Elegant and clear interface】The simple interface design allows you to conveniently mark various notes with different colors and easily manage daily affairs. — Privacy Policy please visit: https://docs.qq.com/doc/DREt1SXJkbG9JYUFT * **Terms of use (EULA): * https://docs.qq.com/doc/DREdKR2ZwYUJaa1hr * **Terms of apple please visit: * https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ For support or feedback, contact: hxx_shdt@126.com

About

Decibel Meter dB

This app provides real-time decibel monitoring with a dynamic visual display and color-coded alerts for different noise thresholds. It helps users track sound levels, understand potential risks, and maintain healthier audio environments. Ideal for various settings, it offers a simple and effective way to stay aware of ambient noise.

Highlights
  • Real-time decibel monitoring
  • Animated visual ear display
  • Color-coded noise alerts
  • 1-minute average tracking
  • Spectrogram view
  • Optimized for iPhone and iPad
Features
Read full description

Sound Ear is an intuitive decibel meter that helps you monitor and maintain healthy sound levels in any environment. Using a simple, visual interface with a dynamic ear display, it makes sound level monitoring accessible and engaging for everyone. KEY FEATURES: • Real-time decibel monitoring with instant visual feedback • Animated ear display that changes color based on sound intensity • 1-minute average tracking for sustained noise level awareness • Spectrogram • Color-coded alerts for different noise thresholds: - Gray (under 70 dB): Safe levels - Yellow (70-80 dB): Warning level - Red (over 80 dB): Potentially harmful levels PERFECT FOR: • Teachers monitoring classroom noise levels • Parents keeping track of children's environment • Office managers maintaining productive workspaces • Musicians and performers monitoring practice sessions • Libraries and quiet spaces • Anyone concerned about noise levels SIMPLE AND EFFECTIVE: • Clean, distraction-free interface • Easy-to-understand visual indicators • Toggle between current and average readings • Works on iPhone and iPad with optimized layouts Monitor sound levels effortlessly and maintain a healthier sound environment with Sound Ear - your visual guide to noise awareness. Measurements are intended for reference only and may vary based on device capabilities. Disclaimer: This app provides approximate sound measurements for informational purposes only. Readings may vary from professional sound level meters due to: - Device microphone quality and condition - Phone position and distance from sound source - Environmental factors and surface vibrations - Hardware limitations of different iPhone models Not intended for professional or industrial use. For accurate sound measurements, please use calibrated professional equipment. For hearing protection guidelines, always follow local workplace safety regulations and consult hearing health professionals.

Screenshots

CalendarIn4 screens
Decibel Meter dB4 screens

Verdict

The call

The clearest difference is update cadence: CalendarIn at every 2 days against Decibel Meter dB's every 4 months. CalendarIn also leads on price ($0.99 vs $3.99). On ads, in-app purchases, 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

CostPrice · In-app purchases · Ads · Monetization

CalendarIn costs $0.99 and Decibel Meter dB $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

CalendarIn ships an update every 2 days, Decibel Meter dB every 4 months. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

Scorecard2 real differences · 7 level
CalendarIn versus Decibel Meter dB: the parameters behind the verdict, then further details
ParameterCalendarInDecibel Meter dB
Price$0.99 — better$3.99
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 2 days — betterEvery 4 months
AdsNoNo
In-app purchasesNoNo
Monetization—Paid
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.615.6 — better
Further details — not scored
Size7 MB1 MB
Age rating17+4+
Developer乐祥 胡Morten Punnerud

In-app purchases

None

CalendarIn

No in-app purchases

None

Decibel Meter dB

No in-app purchases

Questions

Is CalendarIn free?
CalendarIn costs $0.99, with no in-app purchases.
Is Decibel Meter dB free?
Decibel Meter dB costs $3.99, with no in-app purchases.
Do CalendarIn or Decibel Meter dB have ads?
Neither CalendarIn nor Decibel Meter dB shows ads.
Which is updated more often, CalendarIn or Decibel Meter dB?
CalendarIn ships an update every 2 days, and Decibel Meter dB every 4 months. Most recently, CalendarIn was updated on October 25, 2026 and Decibel Meter dB on October 24, 2026.

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