# Decibel Meter Sound Detector vs Behavior Observation

The clearest difference is price: Decibel Meter Sound Detector at Free against Behavior Observation's $59.99. Decibel Meter Sound Detector also leads on review sentiment (79% vs 44%) and ratings volume (56K vs 89). Behavior Observation's advantage is in-app purchases (none vs 6) and chart position (#192 vs unranked). On rating, ads and device support there is nothing between them.

Decibel Meter Sound Detector is free to download; Behavior Observation costs $59.99 up front. Decibel Meter Sound Detector sells 6 one-off in-app purchases. Behavior Observation asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.7 for Decibel Meter Sound Detector against 4.6 for Behavior Observation. That said, the two scores are not equally well evidenced: Decibel Meter Sound Detector has 56K ratings behind it against 89, so its average is the more settled of the two. Written reviews are what separate them: 79% of Decibel Meter Sound Detector's written reviews are positive against 44% of Behavior Observation's.

Decibel Meter Sound Detector ships an update every 5 weeks, Behavior Observation every 2 months. The most recent releases landed on November 10, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Decibel Meter Sound Detector | Behavior Observation |
| --- | --- | --- |
| Price | **Free** | $59.99 |
| Rating | **[4.7 (56K ratings)](https://appshunter.io/ios/app/decibel-meter-sound-detector/id1254994873/reviews)** | [4.6 (89 ratings)](https://appshunter.io/ios/app/behavior-observation-boss/id1534801113/reviews) |
| Number of ratings | **56K** | 89 |
| Positive reviews | **78.7% of reviews** | 44.4% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | **Free with in-app purchases** | Paid |
| Best chart rank | — | **#192** |
| Size | 20 MB | 57 MB |
| Requires iOS | **14.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ashraf Thoppukadavil](https://appshunter.io/developer/1254994872) | [Allen Eubank](https://appshunter.io/developer/1492314115) |

## What reviewers say

### Decibel Meter Sound Detector

[App page](https://appshunter.io/ios/app/decibel-meter-sound-detector/id1254994873)

Monitor your surroundings with this decibel meter app. It measures sound levels in real-time, providing clear visual analysis and advanced filtering options. Easily share your readings for documentation or further analysis.

**Highlights:** Real-time decibel (dB) readings, Frequency weighting (A, B, C, Z), Share measurements via various apps, 1/3 octave band frequency analysis, Display current, average, and max values, Advanced filter range settings

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Decibel Meter | $1.99 | one-time |
| Decibel Meter Premium | $4.99 | one-time |
| Decibel Meter | $4.99 | one-time |
| Decibel Meter | $9.99 | one-time |
| Decibel Meter | $19.99 | one-time |
| Decibel Meter | $29.99 | one-time |

**What reviewers like**

- 👍 No bloatware
- 👍 Quite useful
- 👍 Excellent and useful app
- 👍 Easy to use
- 👍 Simple, clear and accurate

**What reviewers complain about**

- 🐛 Ads block settings
- 🐛 Inaccurate readings
- 🐛 Not sensitive at all
- 🐛 Dangerously inaccurate
- 🐛 Unable to record continuously

**Reported bugs**

- Analyze feature is broken
- Analyze feature has backwards time axis
- Repeatedly prompts to paste from clipboard
- Freezes after a few seconds of use

**Requested features**

- Ability to name or add notes to recordings
- Option to specify microphone to use
- Ability to stop and start new recordings without closing app
- Landscape mode
- Calibration against professional equipment


### Behavior Observation

[App page](https://appshunter.io/ios/app/behavior-observation-boss/id1534801113)

**Currently charting:** #192 Top Paid · Productivity (US App Store)

This tool helps educators and clinicians systematically track student behavior in school settings. It allows for detailed data capture and generates professional reports to inform interventions and assessments. The app is designed for privacy and offline use, with no subscriptions or ads.

**Highlights:** Momentary time sampling and partial-interval recording, Customizable session duration and intervals, Track engaged and non-engaged behaviors, Built-in peer comparison intervals, Teacher-Directed Instruction (TDI) tracking, Export PDF, CSV, and HTML reports, Offline functionality

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Decibel Meter Sound Detector free?

Decibel Meter Sound Detector is free to download, with in-app purchases available.

### Is Behavior Observation free?

Behavior Observation costs $59.99, with no in-app purchases.

### Which has better reviews, Decibel Meter Sound Detector or Behavior Observation?

Decibel Meter Sound Detector is rated higher. Decibel Meter Sound Detector averages 4.7 out of 5 from 56K ratings, while Behavior Observation averages 4.6 from 89 ratings.

### Do Decibel Meter Sound Detector or Behavior Observation have ads?

Neither Decibel Meter Sound Detector nor Behavior Observation shows ads.

### Which is updated more often, Decibel Meter Sound Detector or Behavior Observation?

Decibel Meter Sound Detector ships an update every 5 weeks, and Behavior Observation every 2 months. Most recently, Decibel Meter Sound Detector was updated on November 10, 2026 and Behavior Observation on November 3, 2026.

---

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