Comparison

Sound Meter Plus vs Jarnex

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

Head to head
About

Sound Meter Plus

This utility tool measures environmental noise and displays decibel (dB) values. It offers features like starting/stopping recordings, saving data to camera roll or files, and showing average, minimum, and maximum dB levels with a graph. Calibration options are also available.

Highlights
  • Measure environmental noise in decibels
  • Start/stop sound recording
  • Save dB data to Camera Roll or Files app
  • Display average, min, and max dB values
  • Visualize dB levels with a graph
  • Calibrate decibel readings
Features
Read full description

Sound Meter is a utility tool that shows decibel values by measuring the environmental noise, displaying dB values in various forms. Features: • Toggle tap to start or stop recording sound data • Save dB sound data image into Camera Roll • Save recorded sound into the Files app • Copy dB sound data to Clipboard for advanced operations • Show average, minimum, and maximum decibel values per second • Indicate decibel levels with a graph line • Display the current noise reference • Display decibel levels with a graph line • Display elapsed time of decibel readings • Calibrate the decibel readings A sound level meter is used for acoustic measurements. It is commonly a hand-held instrument with a microphone. The diaphragm of the microphone responds to changes in air pressure caused by sound waves. That is why the instrument is sometimes referred to as a Sound Pressure Level Meter. The decibel is a unit of measurement used to express the ratio of one value of a power or field quantity to another on a logarithmic scale. This logarithmic quantity is called the power level or field level, respectively. It can be used to express either a change in value or an absolute value. A noise level chart showing examples of sounds with dB levels ranging from 0 to 180 decibels: 180 – Rocket launch 140 – Jet engine at takeoff 120 – Thunderclap 110 – Rock band 100 – Motorcycle 90 – Lawn mower 80 – Alarm clock 70 – Shower 60 – Conversational speech 50 – Light traffic 30 – Whisper 20 – Rustling leaves 10 – A pin dropping 0 – Healthy hearing threshold Sample Sound Data: \[50.256, 51.245, ..., 65.359] You can calibrate your device with an actual sound meter (dBA). Microphones in most devices are limited and should be used as auxiliary tools. For more accurate dB values, we recommend using a dedicated sound level meter. Thanks for your support! Visit nitrio.com for more apps for your iOS devices.

About

Jarnex

Control and automate your smart home devices remotely. Manage multiple devices simultaneously, set timers for automated operations, and share access with family members. Enjoy hands-free control with voice assistant integration and receive timely notifications about your devices.

Highlights
  • Remote device management
  • Simultaneous control
  • Automated timers
  • Device sharing
  • Voice assistant integration
  • Custom scene creation
  • Device status notifications
Read full description

Enhances your smart life with an array of features: 1. Remote Control: Manage home devices from anywhere. 2. Simultaneous Control: Handle multiple devices with ease. 3. Timers: Automate device operations for convenience. 4. Device Sharing: Share devices with family effortlessly. 5. Easy Setup: Quickly connect the app to your devices. 6. Voice Control: Integrate with voice assistants for hands-free management. 7. Scene Creation: Create custom device settings for various scenarios. 8. Notifications: Receive alerts for device status and updates. 9. Device Compatibility: Connect with a wide range of smart devices.

Screenshots

Sound Meter Plus4 screens
Jarnex4 screens

Verdict

The call

The clearest difference is price: Jarnex at Free against Sound Meter Plus's $2.99. Jarnex also leads on rating (4.4 vs 1.0) and update cadence (every 10 months vs every 39 months). Sound Meter Plus's advantage is iOS requirement (12.0 vs 14.0). On 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

Jarnex is free to download; Sound Meter Plus costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Jarnex holds the better App Store score, 4.4 against 1.0. That said, the two scores are not equally well evidenced: Jarnex has 9 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Sound Meter Plus ships an update every 39 months, Jarnex every 10 months. The most recent releases landed on October 30, 2026 and November 3, 2026 respectively.

Scorecard6 real differences · 4 level
Sound Meter Plus versus Jarnex: the parameters behind the verdict, then further details
ParameterSound Meter PlusJarnex
Price$2.99Free — better
Rating1.0 (1 ratings)4.4 (9 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings19 — better
Update frequencyEvery 39 monthsEvery 10 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better14.0
Further details — not scored
Size10 MB227 MB
Age rating4+12+
DeveloperHeng Jia LiangEasternCCTV USA LLC

In-app purchases

None

Sound Meter Plus

No in-app purchases

None

Jarnex

No in-app purchases

Questions

Is Sound Meter Plus free?
Sound Meter Plus costs $2.99, with no in-app purchases.
Is Jarnex free?
Jarnex is free to download, with no in-app purchases.
Which has better reviews, Sound Meter Plus or Jarnex?
Jarnex is rated higher. Sound Meter Plus averages 1.0 out of 5 from 1 ratings, while Jarnex averages 4.4 from 9 ratings.
Do Sound Meter Plus or Jarnex have ads?
Neither Sound Meter Plus nor Jarnex shows ads.
Which is updated more often, Sound Meter Plus or Jarnex?
Sound Meter Plus ships an update every 39 months, and Jarnex every 10 months. Most recently, Sound Meter Plus was updated on October 30, 2026 and Jarnex on November 3, 2026.

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