# DLLHS vs SPL Meter

The clearest difference is in-app purchases: DLLHS at none against SPL Meter's 3. SPL Meter's advantage is iOS requirement (12.0 vs 16.1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. SPL Meter sells 3 in-app purchases, starting at $2.99 per 7 days. DLLHS asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | DLLHS | SPL Meter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.9 (14 ratings)](https://appshunter.io/ios/app/spl-meter-db-noise-tool/id6751081307/reviews)** |
| Number of ratings | — | **14** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | — | Freemium |
| Size | 100 MB | 32 MB |
| Requires iOS | 16.1 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Abtus Ltd](https://appshunter.io/developer/1568295463) | [CODIGITAL SOLUTIONS](https://appshunter.io/developer/1829802387) |

## What reviewers say

### DLLHS

[App page](https://appshunter.io/ios/app/dllhs/id1568295461)

**Features:** Vision Pro support

**In-app purchases:** none


### SPL Meter

[App page](https://appshunter.io/ios/app/spl-meter-db-noise-tool/id6751081307)

Transform your device into a professional sound level meter to measure decibels in real-time. Monitor noise levels, visualize sound frequencies, and track your exposure to ensure safe hearing limits.

**Highlights:** Accurate noise level detection, Live audio monitoring, Professional calibration, Detailed noise history, Advanced spectrogram view, Noise exposure tracking

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Access | $2.99 | per 7 days |
| Pro Access | $4.99 | per month |
| Pro Access | $29.99 | per year |


## Frequently asked questions

### Is DLLHS free?

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

### Is SPL Meter free?

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

### Do DLLHS or SPL Meter have ads?

Neither DLLHS nor SPL Meter shows ads.

### Which is updated more often, DLLHS or SPL Meter?

DLLHS ships an update every 2 months, and SPL Meter every 2 months. Most recently, DLLHS was updated on October 27, 2026 and SPL 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.*