# LogicSystem vs dB Meter

The clearest difference is in-app purchases: LogicSystem at none against dB Meter's 1. LogicSystem also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.0). dB Meter's advantage is update cadence (every 4 days vs every 2 weeks). On price and ads there is nothing between them.

Both are free to download. dB Meter sells 1 one-off in-app purchase. LogicSystem asks for nothing beyond the download.

LogicSystem ships an update every 2 weeks, dB Meter every 4 days. The most recent releases landed on October 11, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | LogicSystem | dB Meter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/db-meter-decibel-spl-spectrum/id6767850405/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 4 days** |
| Monetization | — | Free with in-app purchases |
| Size | 57 MB | 6 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [HST Innovations LLC](https://appshunter.io/developer/670745958) | [Michael Borison](https://appshunter.io/developer/1691245822) |

## What reviewers say

### LogicSystem

[App page](https://appshunter.io/ios/app/logicsystem/id6753318710)

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

**In-app purchases:** none


### dB Meter

[App page](https://appshunter.io/ios/app/db-meter-decibel-spl-spectrum/id6767850405)

Instantly measure sound levels with a real-time analog gauge. Analyze noise with average, peak, and time-averaged readings. Features include low-frequency indication and on-device calibration for accuracy. Works offline without internet.

**Highlights:** Real-time dB sound level measurement, Live min/average/peak readout, LAeq and LCeq time-averaged readings, Low-frequency indicator, Analog display, On-device calibration, Offline functionality

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| dBMeter Pro | $4.99 | one-time |


## Frequently asked questions

### Is LogicSystem free?

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

### Is dB Meter free?

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

### Do LogicSystem or dB Meter have ads?

Neither LogicSystem nor dB Meter shows ads.

### Which is updated more often, LogicSystem or dB Meter?

LogicSystem ships an update every 2 weeks, and dB Meter every 4 days. Most recently, LogicSystem was updated on October 11, 2026 and dB Meter on October 24, 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.*