# Decibel Meter dB (Sound Meter) vs Allotment Optimizer

The clearest difference is in-app purchases: Allotment Optimizer at none against Decibel Meter dB (Sound Meter)'s 10. Allotment Optimizer also leads on ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Decibel Meter dB (Sound Meter) sells 10 in-app purchases, starting at $0.99 per 7 days. Allotment Optimizer asks for nothing beyond the download.

## The numbers

| Metric | Decibel Meter dB (Sound Meter) | Allotment Optimizer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (1.3K ratings)](https://appshunter.io/ios/app/decibel-meter-db-sound-meter/id1205186197/reviews)** | — |
| Number of ratings | **1.3K** | — |
| Positive reviews | 54.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 134 MB | 52 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [ZipoApps](https://appshunter.io/developer/1671444635) | [Matthew Grossman](https://appshunter.io/developer/1893740214) |

## What reviewers say

### Decibel Meter dB (Sound Meter)

[App page](https://appshunter.io/ios/app/decibel-meter-db-sound-meter/id1205186197)

Measure sound volume in real-time with this app. It provides precise decibel readings, a visual timeline of sound fluctuations, and customizable calibration for accurate results. Ideal for monitoring noise levels in various environments.

**Highlights:** Accurate sound measurements in decibels (dB), Real-time volume display, Volume timeline for trend analysis, Customizable calibration settings, User-friendly interface

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited access | $0.99 | per 7 days |
| Weekly Access | $3.99 | per 7 days |
| Weekly Access | $4.99 | per 7 days |
| Premium features | $6.99 | per 7 days |
| Premium features | $8.99 | per 7 days |
| Yearly Access | $19.99 | per year |
| Yearly Access | $49.99 | per year |
| Custom Calibration | $1.99 | one-time |
| Full Screen Mode | $1.99 | one-time |
| Frequency Weightings | $2.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 🤩 Accurate measurements
- 💯 Useful for various applications

**What reviewers complain about**

- 🤑 Expensive subscription
- 🔒 Difficult to refund
- 🐛 Inaccurate readings
- 💤 Doesn't work in airplane mode

**Reported bugs**

- Crashes and freezes
- Sensitivity issues
- Inconsistent performance

**Requested features**

- Ability to save and export recordings
- Customizable settings and calibration
- Support for older devices


### Allotment Optimizer

[App page](https://appshunter.io/ios/app/allotment-optimizer/id6778588601)

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

**In-app purchases:** none


## Frequently asked questions

### Is Decibel Meter dB (Sound Meter) free?

Decibel Meter dB (Sound Meter) is free to download, with in-app purchases available.

### Is Allotment Optimizer free?

Allotment Optimizer is free to download, with no in-app purchases.

### Do Decibel Meter dB (Sound Meter) or Allotment Optimizer have ads?

Decibel Meter dB (Sound Meter) shows ads; Allotment Optimizer does not.

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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.*