Comparison

Sound Meter (Decibel) vs Call Shield

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

Head to head
About

Sound Meter (Decibel)

This application measures and displays environmental noise levels in decibels. It offers various visual representations of the data, including gauges, graphs, and numerical readouts. Users can also save their measurement history.

Highlights
  • Measures decibel values
  • Displays noise reference
  • Shows min/avg/max dB
  • Graphical decibel display
  • Saves measurement records
Features
Read full description

Sound level meter app is shows a decibel values by measure the environmental noise, displays measured dB values in various forms.  You can experience tidy graphic design with high frame by this smart sound meter app. Features: * Indicates decibel by gauge * Display the current noise reference * Display min/avg/max decibel values * Display decibel by graph line * Save measured records **Notes Microphones in phone is aligned to human voice. The maximum values are limited by the device. Very loud sounds(over ~110 dB) may not be recognized in most device. So please use it as just an auxiliary tools. If you need more accurate dB values, we recommend a actual sound level meter for that.

About

Call Shield

Features
Read full description

Call Shield, rahatsız eden telefon numaralarını iOS'un Arama Rehberi (Call Directory) uzantısıyla cihazınızda engeller. NE YAPAR • Engelle: eklediğiniz numaradan gelen arama hiç çalmaz, sesli mesaja da düşmez • Etiketle: arama çalar, ama gelen arama ekranında sizin yazdığınız etiket görünür • Ülke kodu olmadan yazdığınız numaralar seçtiğiniz varsayılan ülke koduyla tamamlanır • Listeyi tek dokunuşla iPhone'a yeniden yükleyin • Kurulum sekmesi, uzantıyı açmak için adım adım yol gösterir GİZLİLİK Listeniz yalnızca bu iPhone'da, uygulama ile uzantısının paylaştığı korumalı alanda tutulur. Hiçbir sunucuya gönderilmez. Call Shield sizi kimin aradığını göremez, arama geçmişinizi okuyamaz ve kişilerinize erişmez. Hesap yok, reklam yok, analiz yok. KURULUM Ayarlar > Uygulamalar > Telefon > Arama Engelleme ve Kimlik bölümünden Call Shield'i açın, sonra uygulamada "Listeyi iPhone'a yeniden yükle"ye dokunun. NOT iOS, engelleme listelerinin cihazda tutulmasını zorunlu kılar; bu yüzden Call Shield hazır bir spam veritabanı sunmaz, sizin belirlediğiniz numaralarla çalışır. Kullanım Koşulları (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Sound Meter (Decibel)4 screens
Call Shield3 screens

Verdict

The call

The clearest difference is in-app purchases: Sound Meter (Decibel) at none against Call Shield's 3. Sound Meter (Decibel) also leads on device support (4 vs 1) and iOS requirement (14.1 vs 17.0). Call Shield's advantage is update cadence (every 8 days vs every 5 months). On price and 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

Both are free to download. Call Shield sells 3 in-app purchases, starting at $2.99 per 7 days. Sound Meter (Decibel) asks for nothing beyond the download.

UpkeepUpdate frequency

Sound Meter (Decibel) ships an update every 5 months, Call Shield every 8 days. The most recent releases landed on November 7, 2026 and October 29, 2026 respectively.

Scorecard4 real differences · 6 level
Sound Meter (Decibel) versus Call Shield: the parameters behind the verdict, then further details
ParameterSound Meter (Decibel)Call Shield
PriceFreeFree
Rating4.5 (3.3K ratings) — better—
Positive reviews50.3% of reviews—
Number of ratings3.3K — better—
Update frequencyEvery 5 monthsEvery 8 days — better
AdsYesYes
In-app purchasesNo — betterYes
MonetizationAd-supported—
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone
Requires iOS14.1 — better17.0
Further details — not scored
Size8 MB6 MB
Age rating4+4+
DeveloperUniCom Technologyenes ozer

Bugs and requests

Sound Meter (Decibel)

Reported bugs

3 issues
  • Apple security alert displayed on a Google ad
  • Readings are half of other apps
  • Misspelled 'quiet' throughout the app

Requested features

3 requests
  • Add option to prevent screen timeout
  • Add landscape mode
  • Improve accuracy and calibration

Call Shield

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Sound Meter (Decibel)

No in-app purchases

3 purchases

Call Shield

Subscriptions3
  • CallShield Pro Weekly3 Days trial$2.997 Days
  • CallShield Pro Monthly$9.991 Month
  • CallShield Pro Yearly3 Days trial$99.991 Year

Questions

Is Sound Meter (Decibel) free?
Sound Meter (Decibel) is free to download, with no in-app purchases.
Is Call Shield free?
Call Shield is free to download, with in-app purchases available.
Do Sound Meter (Decibel) or Call Shield have ads?
Both Sound Meter (Decibel) and Call Shield show ads.
Which is updated more often, Sound Meter (Decibel) or Call Shield?
Sound Meter (Decibel) ships an update every 5 months, and Call Shield every 8 days. Most recently, Sound Meter (Decibel) was updated on November 7, 2026 and Call Shield on October 29, 2026.

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