Comparison

Decibel Meter vs BettyTime World Clock

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

Head to head
About

Decibel Meter

This tool transforms your iPhone into a real-time sound level meter. It measures and displays environmental noise in decibels, helping you monitor sound at home, work, or outdoors. Protect your hearing by detecting loud noises and staying aware of your sound environment.

Highlights
  • Real-time decibel measurement
  • Dynamic graph display
  • Min/Max/Average sound levels
  • Measuring timer
  • Pause and Reset buttons
  • Noise pollution checks
Features
Read full description

Decibel Meter is a powerful and easy-to-use sound level meter (also known as dB meter, SPL meter, or noise detector) that turns your iPhone into a real-time sound measuring tool. Using your device’s built-in microphone, Decibel Meter detects and displays environmental noise levels in decibels (dB). Whether you're monitoring noise at home, measuring sound at work, or checking noise pollution outdoors – this app provides accurate, real-time readings. Key Features: - Real-time decibel measurement with dynamic graph - Sound level display: Min / Max / Average - Measuring timer included - Easy-to-use Pause and Reset buttons - Useful for sound tests, noise pollution checks, and SPL monitoring Use Cases: - Monitor home or work noise - Measure traffic, music, or construction sound - Perform noise tests for health and safety - Detect sound levels in quiet or noisy environments Sound measurements depend on your device’s microphone and may vary from professional SPL meters. Protect your ears and your health. Use Decibel Meter to detect loud noise and stay in control of your sound environment. Download now and start measuring sound today! Privacy Policy: https://www.getpaoapps.com/privacy Terms of Use: https://www.getpaoapps.com/terms

About

BettyTime World Clock

Features
Read full description

See what time it is for the people who matter to you — instantly, in every city you care about. I made this for my Betty, but you can have it too. BettyTime is a simple, fast world clock. Pick any time, on any day, and see it converted across all your saved locations at once. Planning a call with family overseas, coordinating a meeting across time zones, or just curious what time it is somewhere else — BettyTime shows you clearly, without the clutter. FEATURES • Add any city or time zone in seconds, with smart search • See every saved time zone update together as you change the source time • Custom labels — rename a card "Mum" or "Work" instead of a city name • Your own time zone is always shown, with a Home badge • Day-difference badges make it obvious when a time falls on tomorrow or yesterday • Switch instantly between 12-hour and 24-hour display • Light and dark themes, matched precisely to your device PRIVATE BY DESIGN BettyTime has no accounts, no sign-up, and no backend. It makes no network calls at all. Everything you add is stored only on your device — nothing is ever sent anywhere, tracked, or shared. Built for anyone whose life crosses time zones: long-distance couples and families, remote teams, frequent travelers, or anyone who just wants a cleaner way to ask "what time is it there?"

Screenshots

Decibel Meter4 screens
BettyTime World Clock2 screens

Verdict

The call

The clearest difference is in-app purchases: BettyTime World Clock at none against Decibel Meter's 3. BettyTime World Clock also leads on update cadence (daily vs monthly). On price, ads, 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

Both are free to download. Decibel Meter sells 3 in-app purchases, starting at $2.99 per 7 days. BettyTime World Clock asks for nothing beyond the download.

UpkeepUpdate frequency

Decibel Meter ships an update monthly, BettyTime World Clock daily. The most recent releases landed on November 4, 2026 and September 21, 2026 respectively.

Scorecard2 real differences · 8 level
Decibel Meter versus BettyTime World Clock: the parameters behind the verdict, then further details
ParameterDecibel MeterBettyTime World Clock
PriceFreeFree
Rating4.7 (55 ratings) — better—
Positive reviews70.0% of reviews—
Number of ratings55 — better—
Update frequencyMonthlyDaily — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone, iPod — better
Requires iOS16.015.0 — better
Further details — not scored
Size176 MB18 MB
Age rating4+4+
DeveloperPaoAppsTIMOTHY GORDON SKIPPER

In-app purchases

3 purchases

Decibel Meter

Subscriptions3
  • Weekly Access with Trial3 Days trial$2.997 Days
  • Weekly Access$2.997 Days
  • Yearly Access$17.991 Year
None

BettyTime World Clock

No in-app purchases

Questions

Is Decibel Meter free?
Decibel Meter is free to download, with in-app purchases available.
Is BettyTime World Clock free?
BettyTime World Clock is free to download, with no in-app purchases.
Do Decibel Meter or BettyTime World Clock have ads?
Neither Decibel Meter nor BettyTime World Clock shows ads.
Which is updated more often, Decibel Meter or BettyTime World Clock?
Decibel Meter ships an update monthly, and BettyTime World Clock daily. Most recently, Decibel Meter was updated on November 4, 2026 and BettyTime World Clock on September 21, 2026.

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