Sound Meter Plus vs Jarnex
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
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.
- Remote device management
- Simultaneous control
- Automated timers
- Device sharing
- Voice assistant integration
- Custom scene creation
- Device status notifications
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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
Verdict
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
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.
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.
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.
| Parameter | Sound Meter Plus | Jarnex |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 1.0 (1 ratings) | 4.4 (9 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 9 — better |
| Update frequency | Every 39 months | Every 10 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 10 MB | 227 MB |
| Age rating | 4+ | 12+ |
| Developer | Heng Jia Liang | EasternCCTV USA LLC |
In-app purchases
Sound Meter Plus
No in-app purchases
Jarnex
No in-app purchases









