Comparison

Decibel Meter dB vs Polariss

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

Polariss

Features
Read full description

Keep the days you look forward to on your Home Screen. Your next concert. The trip you just booked. An anniversary or a birthday that matters. Polariss is a countdown app that keeps those dates close, with the days left visible in the app and on your Home Screen. ◆ Make the wait part of the fun Add a concert when you get your tickets, or a vacation when you book your trip. You can also count down to an exam or race day. Keep the date and notes together in each event's details. ◆ A little something to look forward to, every day Basic countdown and calendar widgets are free. Choose the event you want to see on your Home Screen. Getting-started guides help you create your first event and set up a widget. ◆ Start free Save up to 3 upcoming events and keep past events as memories without a limit. Event editing, categories, sorting, basic reminders, and iCloud sync are also free. ◆ Share the excitement Create a countdown card or a widget-style image to share on social media or in a message. Save the image and look forward to the day together. ◆ Reminders and sync Get a reminder the day before and on the day of an event. Turn notifications on or off and choose the default reminder hour. Sync events and notes with iCloud. ◆ Polariss Pro — make it yours A one-time purchase unlocks unlimited upcoming events, 6 additional themes for individual events, and custom widget background, text, and accent colors. Keep up to 3 events together in a Medium widget or 6 in a Large widget. Add a countdown to your Lock Screen with circular, rectangular, or inline widgets. Preview the appearance in the app before purchasing. No ads. No subscriptions. Free features remain available without purchasing Pro. Event titles, notes, and dates are not sent as usage analytics events.

Screenshots

Decibel Meter dB4 screens
Polariss4 screens

Verdict

The call

The clearest difference is price: Polariss at Free against Decibel Meter dB's $3.99. Polariss also leads on update cadence (weekly vs every 4 months). Decibel Meter dB's advantage is in-app purchases (none vs 1) and device support (3 vs 1). On ads 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

Polariss is free to download; Decibel Meter dB costs $3.99 up front. Polariss 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, Polariss weekly. The most recent releases landed on November 4, 2026 and November 9, 2026 respectively.

Scorecard5 real differences · 4 level
Decibel Meter dB versus Polariss: the parameters behind the verdict, then further details
ParameterDecibel Meter dBPolariss
Price$3.99Free — better
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 4 monthsWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.6 — better17.0
Further details — not scored
Size1 MB6 MB
Age rating4+4+
DeveloperMorten PunnerudYutaka Kubota

In-app purchases

None

Decibel Meter dB

No in-app purchases

1 purchases

Polariss

One-time1
  • Polariss Pro$4.99

Questions

Is Decibel Meter dB free?
Decibel Meter dB costs $3.99, with no in-app purchases.
Is Polariss free?
Polariss is free to download, with in-app purchases available.
Do Decibel Meter dB or Polariss have ads?
Neither Decibel Meter dB nor Polariss shows ads.
Which is updated more often, Decibel Meter dB or Polariss?
Decibel Meter dB ships an update every 4 months, and Polariss weekly. Most recently, Decibel Meter dB was updated on November 4, 2026 and Polariss on November 9, 2026.

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