Comparison

Decibel Meter dB vs Qotus

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

Head to head
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.

About

Qotus

Features
Read full description

Qotus makes your Lock and Home screens personal. Write a short line, save it, and show it in the widget exactly as you cropped it. You can set repeating reminders for any message hourly, at a specific time each day, or weekly, so your intention stays in focus. Prefer a minimalist look? Save without text for a clean, image-only widget and pair it with a custom background that matches your style. Everything runs on-device: fast, private, and offline. In this version, you can also add a logo or image to the Lock Screen perfect for your company, favorite club, or esports team. You get a clear, centered preview, a simple “Save to widget” button, and smart PNG handling that trims empty transparent edges. Extra-wide images now fit better automatically, without unwanted cropping, and the app feels faster and more polished.

Screenshots

Decibel Meter dB4 screens
Qotus4 screens

Verdict

The call

The clearest difference is price: Qotus at Free against Decibel Meter dB's $3.99. Qotus also leads on update cadence (monthly vs every 4 months). Decibel Meter dB's advantage is in-app purchases (none vs 1) and iOS requirement (15.6 vs 18.0). On ads 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

CostPrice · In-app purchases · Ads · Monetization

Qotus is free to download; Decibel Meter dB costs $3.99 up front. Qotus sells 1 one-off in-app purchase. Decibel Meter dB asks for nothing beyond the download.

UpkeepUpdate frequency

Decibel Meter dB ships an update every 4 months, Qotus monthly. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

Scorecard4 real differences · 5 level
Decibel Meter dB versus Qotus: the parameters behind the verdict, then further details
ParameterDecibel Meter dBQotus
Price$3.99Free — better
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 4 monthsMonthly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better18.0
Further details — not scored
Size1 MB8 MB
Age rating4+4+
DeveloperMorten PunnerudCrown Tech Development SH.P.K.

In-app purchases

None

Decibel Meter dB

No in-app purchases

1 purchases

Qotus

One-time1
  • Logo Premium$0.99

Questions

Is Decibel Meter dB free?
Decibel Meter dB costs $3.99, with no in-app purchases.
Is Qotus free?
Qotus is free to download, with in-app purchases available.
Do Decibel Meter dB or Qotus have ads?
Neither Decibel Meter dB nor Qotus shows ads.
Which is updated more often, Decibel Meter dB or Qotus?
Decibel Meter dB ships an update every 4 months, and Qotus monthly. Most recently, Decibel Meter dB was updated on October 24, 2026 and Qotus on October 28, 2026.

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