# Drones ML vs Decibels

The clearest difference is in-app purchases: Drones ML at none against Decibels's 1. Drones ML also leads on update cadence (every 11 months vs every 30 months) and iOS requirement (7.0 vs 17.0). Decibels's advantage is review sentiment (22% vs 0%). On price, ads and device support there is nothing between them.

Both are free to download. Decibels sells 1 in-app purchase, starting at $3.99 per month. Drones ML asks for nothing beyond the download.

Drones ML ships an update every 11 months, Decibels every 30 months. The most recent releases landed on October 14, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Drones ML | Decibels |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (22 ratings)](https://appshunter.io/ios/app/decibels-sound-level-db-meter/id1590741461/reviews)** |
| Number of ratings | — | **22** |
| Positive reviews | 0.0% of reviews | **22.2% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 11 months** | Every 30 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 109 MB | 20 MB |
| Requires iOS | **7.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Multilaser S/A](https://appshunter.io/developer/1445686172) | [Real Vision Ltd](https://appshunter.io/developer/1447773149) |

## What reviewers say

### Drones ML

[App page](https://appshunter.io/ios/app/drones-ml/id1445686173)

Control a toy quadrocopter using your device via WiFi. Stream real-time video directly from the drone. Compatible with a wide range of iOS devices.

**Highlights:** WiFi quadrocopter control, Real-time video transfer, iOS device compatibility, Live video streaming

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

**In-app purchases:** none


### Decibels

[App page](https://appshunter.io/ios/app/decibels-sound-level-db-meter/id1590741461)

Measure sound levels in decibels using your device's microphone. View real-time graphs and historical data to detect noise pollution and protect your hearing. Calibrate for accurate readings across various environments.

**Highlights:** Measures sound in decibels (dB), Displays sound samples on a graph, Detects loud and low environmental noise, Calibrated for accuracy, Shows min/avg/max decibel values, Saves data and view history, Calibrates decibel for each device

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| dB Meter Full App Access | $3.99 | per month |


## Frequently asked questions

### Is Drones ML free?

Drones ML is free to download, with no in-app purchases.

### Is Decibels free?

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

### Do Drones ML or Decibels have ads?

Neither Drones ML nor Decibels shows ads.

### Which is updated more often, Drones ML or Decibels?

Drones ML ships an update every 11 months, and Decibels every 30 months. Most recently, Drones ML was updated on October 14, 2026 and Decibels on October 12, 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.*