Leona Smart vs Decibel Meter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Leona Smart
Control your smart home devices using voice commands with Amazon Alexa or Google Home. Create custom automations or manage your lights and other products in real-time through the app.
- Voice control with Alexa
- Voice control with Google Home
- Create automations
- Live control of devices
- Set brightness and color
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Use your voice in conjunction with Amazon Alexa or Google Home to control your Leona™ Smart Home Products! Create automations for these products within the app or use your voice for live control. "Alexa, turn on dining room light." "Ok Google, turn off kitchen light." "Alexa, set patio light brightness to 20%." "Ok Google, change holiday lights to red."
Decibel Meter
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Decibel Meter - Precision Tool turns your Apple Watch into a professional-grade sound level monitor. Get real-time decibel readings with a beautifully designed gauge interface, right on your wrist. REAL-TIME SOUND MONITORING Measure ambient noise levels instantly with a responsive, high-refresh metering engine. The precision gauge updates 20 times per second, giving you accurate readings from whisper-quiet rooms to loud concert venues. PROFESSIONAL GAUGE DISPLAY A sleek speedometer-style arc visualizes sound intensity from 0 to 120 dB. The dynamic needle moves smoothly with spring physics, making it easy to read levels at a glance. SMART COLOR INDICATORS Instantly understand your sound environment: Green: Safe levels below 75 dB Yellow: Moderate exposure between 75-90 dB Red: Dangerous levels above 90 dB PROTECT YOUR HEARING Prolonged exposure to sounds above 85 dB can cause permanent hearing damage. Decibel Meter helps you stay aware of your surroundings whether you are at a concert, working with power tools, commuting, or checking your baby's room. PRIVACY FIRST No audio is ever recorded or stored. The microphone is used exclusively for real-time level measurement. Your sound data stays on your device and is never transmitted anywhere. DESIGNED FOR APPLE WATCH Built natively for watchOS with SwiftUI. Optimized for all Apple Watch sizes including Apple Watch Ultra. Lightweight, fast, and battery-conscious. Perfect for musicians, audio engineers, parents, construction workers, commuters, and anyone who cares about hearing health.
Screenshots
Verdict
The clearest difference is price: Leona Smart at Free against Decibel Meter's $1.99. On ads, in-app purchases, 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
Leona Smart is free to download; Decibel Meter costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Leona Smart | Decibel Meter |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 4.9 (75 ratings) — better | — |
| Number of ratings | 75 — better | — |
| Update frequency | Every 22 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPod, Apple Watch — better |
| Requires iOS | 13.0 | 13.0 |
| Further details — not scored | ||
| Size | 197 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Flexfire LEDs, Inc | Emrah Korkmaz |
In-app purchases
Leona Smart
No in-app purchases
Decibel Meter
No in-app purchases









