# CEMA vs DB

The clearest difference is in-app purchases: CEMA at none against DB's 3. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. DB sells 3 in-app purchases, starting at $3.99 per 7 days. CEMA asks for nothing beyond the download.

CEMA ships an update every 7 months, DB every 5 months. The most recent releases landed on October 26, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | CEMA | DB |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (37 ratings)](https://appshunter.io/ios/app/db-decibel-sound-level-meter/id6449352632/reviews)** |
| Number of ratings | — | **37** |
| Positive reviews | — | 3.8% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 5 months** |
| Monetization | — | Free with in-app purchases |
| Size | 34 MB | 60 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Softlink s.r.o.](https://appshunter.io/developer/1195380071) | [Guangzhou Linke Technology Co., Ltd](https://appshunter.io/developer/6776569852) |

## What reviewers say

### CEMA

[App page](https://appshunter.io/ios/app/cema/id1454637172)

**Features:** macOS Compatibility

**In-app purchases:** none


### DB

[App page](https://appshunter.io/ios/app/db-decibel-sound-level-meter/id6449352632)

Measure sound levels with high precision in real-time. Get detailed reports, share data easily, and export audio. Features a minimalist design for quick measurements.

**Highlights:** High precision real-time measurement, Location information for measurements, Detailed measurement reports, One-click sharing of data, Export audio data, Minimalist design

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly membership | $3.99 | per 7 days |
| Monthly membership | $4.99 | per month |
| Yearly memberShip | $14.99 | per year |


## Frequently asked questions

### Is CEMA free?

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

### Is DB free?

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

### Do CEMA or DB have ads?

Neither CEMA nor DB shows ads.

### Which is updated more often, CEMA or DB?

CEMA ships an update every 7 months, and DB every 5 months. Most recently, CEMA was updated on October 26, 2026 and DB on October 30, 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.*