# SEMS2 vs DB

The clearest difference is in-app purchases: SEMS2 at none against DB's 3. SEMS2 also leads on iOS requirement (8.0 vs 13.0). On price, 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. SEMS2 asks for nothing beyond the download.

## The numbers

| Metric | SEMS2 | 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 5 months |
| Monetization | — | Free with in-app purchases |
| Size | 1 MB | 60 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 9+ |
| Developer | [TnM Tech Co. Ltd.](https://appshunter.io/developer/1050845005) | [Guangzhou Linke Technology Co., Ltd](https://appshunter.io/developer/6776569852) |

## What reviewers say

### SEMS2

[App page](https://appshunter.io/ios/app/sems2/id1255732412)

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

**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 SEMS2 free?

SEMS2 is free to download, with no in-app purchases.

### Is DB free?

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

### Do SEMS2 or DB have ads?

Neither SEMS2 nor DB shows ads.

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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.*