# Cortex vs dB Logger

The clearest difference is in-app purchases: Cortex at none against dB Logger's 2. Cortex also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.0). dB Logger's advantage is update cadence (daily vs monthly). On price and device support there is nothing between them.

Both are free to download. dB Logger sells 2 one-off in-app purchases. Cortex asks for nothing beyond the download.

Cortex ships an update monthly, dB Logger daily. The most recent releases landed on October 6, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Cortex | dB Logger |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/db-logger-sound-level-meter/id6778236281/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Daily** |
| Monetization | — | Free with in-app purchases |
| Size | 40 MB | 142 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KIOUR PC](https://appshunter.io/developer/1657350555) | [BEK Service LTD](https://appshunter.io/developer/1865488235) |

## What reviewers say

### Cortex

[App page](https://appshunter.io/ios/app/cortex/id6444849957)

**In-app purchases:** none


### dB Logger

[App page](https://appshunter.io/ios/app/db-logger-sound-level-meter/id6778236281)

Transform your device into a professional sound level meter and analyzer. Capture raw audio, log noise levels over time, and generate detailed reports. Ideal for assessing noise exposure, troubleshooting sound systems, or documenting noise complaints.

**Highlights:** Raw, unprocessed audio capture, Real-time dB-A, dB-C, dB-Z measurements, Frequency analysis (FFT spectrum), Noise logging and reporting (CSV, PDF), External microphone support, NR and NC room ratings, Noise-source identification

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $3.99 | one-time |
| Full Version | $29.00 | one-time |


## Frequently asked questions

### Is Cortex free?

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

### Is dB Logger free?

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

### Do Cortex or dB Logger have ads?

dB Logger shows ads; Cortex does not.

### Which is updated more often, Cortex or dB Logger?

Cortex ships an update monthly, and dB Logger daily. Most recently, Cortex was updated on October 6, 2026 and dB Logger on September 22, 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.*