# Decibel vs EV3 Attribute Programmer

The clearest difference is in-app purchases: EV3 Attribute Programmer at none against Decibel's 10. EV3 Attribute Programmer also leads on rating (5.0 vs 4.6). Decibel's advantage is ratings volume (36K vs 2) and iOS requirement (13.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Decibel sells 10 in-app purchases, starting at $1.99 per 7 days. EV3 Attribute Programmer asks for nothing beyond the download.

EV3 Attribute Programmer holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Decibel has 36K ratings behind it against 2, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 25, 2026 and June 7, 2026 respectively.

## The numbers

| Metric | Decibel | EV3 Attribute Programmer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (36K ratings)](https://appshunter.io/ios/app/decibel-db-sound-level-meter/id1227650795/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/ev3-attribute-programmer/id1593075625/reviews)** |
| Number of ratings | **36K** | 2 |
| Positive reviews | 66.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Freemium | **Free** |
| Size | 56 MB | 87 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Vlad Polyanskiy](https://appshunter.io/developer/438646985) | [ISSPRO, Inc.](https://appshunter.io/developer/1593075627) |

## What reviewers say

### Decibel

[App page](https://appshunter.io/ios/app/decibel-db-sound-level-meter/id1227650795)

Transform your device into a professional sound level meter and audio analyzer. Measure ambient noise, monitor decibel levels, and visualize sound frequencies in real time. It also offers advanced sleep tracking with sound recognition to identify disruptions.

**Highlights:** Real-time decibel (dB) sound level monitoring, Integrated Spectrum Analyzer (FFT, spectrogram), Sleep tracking with sound recognition, Noise exposure data export to Health app, Add sound level overlays to photos/videos, Save, export, and playback sound measurements

**Features:** macOS Compatibility, Family Sharing, Apple Watch app

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Mode | $1.99 | per 7 days |
| Premium Plus | $4.99 | per month |
| Premium Mode | $7.99 | per month |
| Premium Mode Subscription | $9.99 | per month |
| Premium Mode | $29.99 | per year |
| dB Meter Pro | $4.99 | one-time |
| Noise Dosimeter Pro | $9.99 | one-time |
| Decibel Meter Pro | $19.99 | one-time |
| Spectrum Analyzer Pack | $24.99 | one-time |
| dB Meter Premium Pack | $49.99 | one-time |

**What reviewers like**

- 👍 Useful for monitoring noise levels
- 🔍 Accurate for a phone app
- 🔧 Good for calibrating audio equipment
- 💡 Helpful for hearing protection
- 📊 Provides detailed measurements

**What reviewers complain about**

- 💰 Aggressive upselling tactics
- 🔒 Privacy concerns around data collection
- 🕹️ Confusing free vs paid options
- 🔁 Recurring subscription issues
- 🔢 Inconsistent/inaccurate readings

**Reported bugs**

- App crashes or freezes during use
- Subscription issues and unwanted charges
- Microphone compatibility problems

**Requested features**

- Add option to set noise level alerts
- Improve geolocation and recording features
- Allow audio playback while using the app
- Provide more calibration options


### EV3 Attribute Programmer

[App page](https://appshunter.io/ios/app/ev3-attribute-programmer/id1593075625)

This application allows users to modify various attributes of EV3 gauges directly from their mobile device. Features include customizing LED colors, adjusting dimmer settings, and configuring output driver behaviors. It also enables fine-tuning of sensor parameters and warning light functionalities.

**Highlights:** Backlight LED color editor, Dimmer input voltage adjustment, Gauge BLE broadcast name configuration, Output driver activation thresholds, Pointer color and sweep weight, Sensor curve coefficients, Warning light activation thresholds

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Decibel free?

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

### Is EV3 Attribute Programmer free?

EV3 Attribute Programmer is free to download, with no in-app purchases.

### Which has better reviews, Decibel or EV3 Attribute Programmer?

EV3 Attribute Programmer is rated higher. Decibel averages 4.6 out of 5 from 36K ratings, while EV3 Attribute Programmer averages 5.0 from 2 ratings.

### Do Decibel or EV3 Attribute Programmer have ads?

Neither Decibel nor EV3 Attribute Programmer shows ads.

### Which is updated more often, Decibel or EV3 Attribute Programmer?

Decibel ships an update every 2 months, and EV3 Attribute Programmer every 2 months. Most recently, Decibel was updated on September 25, 2026 and EV3 Attribute Programmer on June 7, 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.*