Comparison

Decibels Meter vs Cers IoT

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

Head to head
About

Decibels Meter

Features
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Concert Decibel Meter - Your Professional Sound Wave Monitoring Assistant When you're surrounded by the sound waves of a concert or music festival, are you curious about the decibel level? Want to share the electrifying experience with the world? The Concert Decibel Meter is your professional sound wave monitoring assistant. 【Core Functions】 Real-time Decibel Monitoring: Accurately captures and displays the real-time decibel value of the venue. From "rhythm warm-up" to "raging sound waves," it uses the most knowledgeable terms about the venue to intuitively tell you the sound pressure level you're in. Watermark Camera: Built-in camera captures moments directly from the venue. Automatically generates cool watermarks, creating a unique souvenir of your visit. Hardcore Hearing Protection: More than just measurement, it's your intelligent guardian of hearing. When the volume reaches a dangerous level, the app will issue a strong alert, reminding you to immediately activate hearing protection mode.

About

Cers IoT

Features
Read full description

CERs IoT is a smart monitoring app that allows users to view real-time CO₂ and air quality data based on their location. Users can intuitively check air quality conditions and CO₂ concentrations through the app, and analyze trends in data changes over time and across locations from multiple perspectives. CERs IoT visualizes collected IoT sensor data for users through map POIs and graphs. It can be used in various environments, including homes, offices, and public spaces. Key Features - Real-time data viewing via IoT sensor integration - Monitoring of CO₂ levels and air quality - Graphs showing hourly data trends - Location-based environmental data monitoring - Intuitive and user-friendly UI Recommended for: - Users who want to manage indoor air quality and CO₂ levels - Households and offices seeking to maintain a healthy environment - Users interested in utilizing IoT-based environmental data Start managing your environment in a smarter and healthier way with CERs IoT.

Screenshots

Decibels Meter4 screens
Cers IoT4 screens

Verdict

The call

The clearest difference is update cadence: Decibels Meter at every 9 days against Cers IoT's every 2 months. On price, ads, in-app purchases 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Decibels Meter ships an update every 9 days, Cers IoT every 2 months. The most recent releases landed on October 15, 2026 and October 6, 2026 respectively.

Scorecard1 real difference · 5 level
Decibels Meter versus Cers IoT: the parameters behind the verdict, then further details
ParameterDecibels MeterCers IoT
PriceFreeFree
Update frequencyEvery 9 days — betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size27 MB46 MB
Age rating4+4+
Developer剑 罗(주)온전히

In-app purchases

None

Decibels Meter

No in-app purchases

None

Cers IoT

No in-app purchases

Questions

Is Decibels Meter free?
Decibels Meter is free to download, with no in-app purchases.
Is Cers IoT free?
Cers IoT is free to download, with no in-app purchases.
Do Decibels Meter or Cers IoT have ads?
Neither Decibels Meter nor Cers IoT shows ads.
Which is updated more often, Decibels Meter or Cers IoT?
Decibels Meter ships an update every 9 days, and Cers IoT every 2 months. Most recently, Decibels Meter was updated on October 15, 2026 and Cers IoT on October 6, 2026.

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