# AcoustiTools® vs MerryIoT Sensor

The clearest difference is review sentiment: AcoustiTools® at 100% against MerryIoT Sensor's 0%. AcoustiTools® also leads on rating (4.4 vs 1.0) and update cadence (every 2 months vs every 5 months). MerryIoT Sensor's advantage is price (Free vs $39.99) and in-app purchases (none vs 2). On ads, device support and iOS requirement there is nothing between them.

MerryIoT Sensor is free to download; AcoustiTools® costs $39.99 up front. AcoustiTools® sells 2 one-off in-app purchases. MerryIoT Sensor asks for nothing beyond the download.

AcoustiTools® holds the better App Store score, 4.4 against 1.0. Both are backed by a comparable volume of ratings — 7 and 2 respectively. Written reviews point the same way: 100% of AcoustiTools®'s written reviews are positive against 0% of MerryIoT Sensor's.

AcoustiTools® ships an update every 2 months, MerryIoT Sensor every 5 months. The most recent releases landed on October 9, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | AcoustiTools® | MerryIoT Sensor |
| --- | --- | --- |
| Price | $39.99 | **Free** |
| Rating | **[4.4 (7 ratings)](https://appshunter.io/ios/app/acoustitools/id1390068470/reviews)** | [1.0 (2 ratings)](https://appshunter.io/ios/app/merryiot-sensor/id1614807356/reviews) |
| Number of ratings | **7** | 2 |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 5 months |
| Monetization | Paid | **Free** |
| Size | 158 MB | 33 MB |
| Requires iOS | 13.3 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ACOUSTIC MASTERMINDS INC.](https://appshunter.io/developer/1352604985) | [BROWAN COMMUNICATIONS INCORPORATION](https://appshunter.io/developer/1584963490) |

## What reviewers say

### AcoustiTools®

[App page](https://appshunter.io/ios/app/acoustitools/id1390068470)

This app provides professional-grade audio analysis and diagnostic tools using augmented reality. It helps map sound levels, calculate delay timing, and offers corrective EQ settings for live sound, studios, car audio, and home theater.

**Highlights:** Augmented Reality Spatial Analyzer, Volume Mapping and Variance, Delay Timing Calculation, Diagnostic Parametric EQ (IAP), Diagnostic Graphic EQ (IAP), Real-Time Frequency Analyzer

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Diagnostic PEQ | $19.99 | one-time |
| Diagnostic GEQ | $19.99 | one-time |


### MerryIoT Sensor

[App page](https://appshunter.io/ios/app/merryiot-sensor/id1614807356)

Monitor your home's environment with this app. It tracks air quality, detects water leaks, and alerts you to unexpected movement, helping ensure a healthy and safe living space.

**Highlights:** Air quality monitoring, Water leak detection, Movement detection, Home safety alerts, Healthy home environment

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AcoustiTools® free?

AcoustiTools® costs $39.99, and also offers in-app purchases.

### Is MerryIoT Sensor free?

MerryIoT Sensor is free to download, with no in-app purchases.

### Which has better reviews, AcoustiTools® or MerryIoT Sensor?

AcoustiTools® is rated higher. AcoustiTools® averages 4.4 out of 5 from 7 ratings, while MerryIoT Sensor averages 1.0 from 2 ratings.

### Do AcoustiTools® or MerryIoT Sensor have ads?

Neither AcoustiTools® nor MerryIoT Sensor shows ads.

### Which is updated more often, AcoustiTools® or MerryIoT Sensor?

AcoustiTools® ships an update every 2 months, and MerryIoT Sensor every 5 months. Most recently, AcoustiTools® was updated on October 9, 2026 and MerryIoT Sensor on September 23, 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.*