# PLUS Thermostat vs Decibel Meter dB

The clearest difference is price: PLUS Thermostat at Free against Decibel Meter dB's $3.99. PLUS Thermostat also leads on ratings volume (9 vs 1) and iOS requirement (9.0 vs 15.6). Decibel Meter dB's advantage is rating (5.0 vs 4.6). On update cadence, ads, in-app purchases and device support there is nothing between them.

PLUS Thermostat is free to download; Decibel Meter dB costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Decibel Meter dB holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: PLUS Thermostat has 9 ratings behind it against 1, so its average is the more settled of the two.

PLUS Thermostat ships an update every 3 months, Decibel Meter dB every 4 months. The most recent releases landed on November 2, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | PLUS Thermostat | Decibel Meter dB |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | [4.6 (9 ratings)](https://appshunter.io/ios/app/plus-thermostat/id1398809121/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/decibel-meter-db/id6740335067/reviews)** |
| Number of ratings | **9** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 4 months |
| Monetization | **Free** | Paid |
| Size | 113 MB | 1 MB |
| Requires iOS | **9.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Gaobiao IoT Technology Co.,Ltd.](https://appshunter.io/developer/1154356155) | [Morten Punnerud](https://appshunter.io/developer/969844397) |

## What reviewers say

### PLUS Thermostat

[App page](https://appshunter.io/ios/app/plus-thermostat/id1398809121)

Remotely monitor and control your home's heating and cooling system. Adjust room temperature, change working modes, and set fan conditions for a consistently comfortable indoor environment.

**Highlights:** Remote temperature monitoring, Control working modes, Adjust fan conditions, Schedule heating/cooling, Maintain constant indoor temperature

**In-app purchases:** none


### Decibel Meter dB

[App page](https://appshunter.io/ios/app/decibel-meter-db/id6740335067)

This app provides real-time decibel monitoring with a dynamic visual display and color-coded alerts for different noise thresholds. It helps users track sound levels, understand potential risks, and maintain healthier audio environments. Ideal for various settings, it offers a simple and effective way to stay aware of ambient noise.

**Highlights:** Real-time decibel monitoring, Animated visual ear display, Color-coded noise alerts, 1-minute average tracking, Spectrogram view, Optimized for iPhone and iPad

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is PLUS Thermostat free?

PLUS Thermostat is free to download, with no in-app purchases.

### Is Decibel Meter dB free?

Decibel Meter dB costs $3.99, with no in-app purchases.

### Which has better reviews, PLUS Thermostat or Decibel Meter dB?

Decibel Meter dB is rated higher. PLUS Thermostat averages 4.6 out of 5 from 9 ratings, while Decibel Meter dB averages 5.0 from 1 ratings.

### Do PLUS Thermostat or Decibel Meter dB have ads?

Neither PLUS Thermostat nor Decibel Meter dB shows ads.

### Which is updated more often, PLUS Thermostat or Decibel Meter dB?

PLUS Thermostat ships an update every 3 months, and Decibel Meter dB every 4 months. Most recently, PLUS Thermostat was updated on November 2, 2026 and Decibel Meter dB on November 4, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*