# ARCQ SPL vs AudioEngineerToolkit

The clearest difference is update cadence: ARCQ SPL at every 2 days against AudioEngineerToolkit's monthly. ARCQ SPL also leads on iOS requirement (17.0 vs 26.5). AudioEngineerToolkit's advantage is price ($4.99 vs $5.99). On ads, in-app purchases and device support there is nothing between them.

ARCQ SPL costs $5.99 and AudioEngineerToolkit $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ARCQ SPL ships an update every 2 days, AudioEngineerToolkit monthly. The most recent releases landed on October 8, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | ARCQ SPL | AudioEngineerToolkit |
| --- | --- | --- |
| Price | $5.99 | **$4.99** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 days** | Monthly |
| Monetization | Paid | — |
| Size | 2 MB | 1 MB |
| Requires iOS | **17.0** | 26.5 |
| Devices | iPhone, iPad, Mac | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [JRB LAB](https://appshunter.io/developer/6782095828) | [HYO SEOP LEE](https://appshunter.io/developer/6790621758) |

## What reviewers say

### ARCQ SPL

[App page](https://appshunter.io/ios/app/arcq-spl-spl-meter/id6782095826)

Transform your device into a precision sound pressure level meter. Analyze real-time A- and C-weighted measurements, view live spectrum analysis, and utilize flexible input options for accurate audio monitoring.

**Highlights:** Real-time A- and C-weighted measurements, Octave-band spectrum analyzer, Flexible input options (built-in, USB, Bluetooth), Simultaneous metric display, Customizable averaging windows, On-device processing for privacy

**Features:** Vision Pro support

**In-app purchases:** none


### AudioEngineerToolkit

[App page](https://appshunter.io/ios/app/audioengineertoolkit/id6794612792)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ARCQ SPL free?

ARCQ SPL costs $5.99, with no in-app purchases.

### Is AudioEngineerToolkit free?

AudioEngineerToolkit costs $4.99, with no in-app purchases.

### Do ARCQ SPL or AudioEngineerToolkit have ads?

Neither ARCQ SPL nor AudioEngineerToolkit shows ads.

### Which is updated more often, ARCQ SPL or AudioEngineerToolkit?

ARCQ SPL ships an update every 2 days, and AudioEngineerToolkit monthly. Most recently, ARCQ SPL was updated on October 8, 2026 and AudioEngineerToolkit on October 6, 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.*