# Stacked vs Noise Level Meter

The clearest difference is update cadence: Stacked at every 3 days against Noise Level Meter's weekly. Noise Level Meter's advantage is iOS requirement (18.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Stacked ships an update every 3 days, Noise Level Meter weekly. The most recent releases landed on October 11, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | Stacked | Noise Level Meter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.8 (4 ratings)](https://appshunter.io/ios/app/noise-level-meter-spectroid/id6798899899/reviews)** |
| Number of ratings | — | **4** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 days** | Weekly |
| Size | 15 MB | 18 MB |
| Requires iOS | 26.0 | **18.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Pull Apps](https://appshunter.io/developer/1828384931) | [Kostiantyn Liubevych](https://appshunter.io/developer/1734302743) |

## What reviewers say

### Stacked

[App page](https://appshunter.io/ios/app/stacked-batch-pdf-scanner/id6761432682)

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

**In-app purchases:** none


### Noise Level Meter

[App page](https://appshunter.io/ios/app/noise-level-meter-spectroid/id6798899899)

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

**In-app purchases:** none


## Frequently asked questions

### Is Stacked free?

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

### Is Noise Level Meter free?

Noise Level Meter is free to download, with no in-app purchases.

### Do Stacked or Noise Level Meter have ads?

Neither Stacked nor Noise Level Meter shows ads.

### Which is updated more often, Stacked or Noise Level Meter?

Stacked ships an update every 3 days, and Noise Level Meter weekly. Most recently, Stacked was updated on October 11, 2026 and Noise Level Meter on October 23, 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.*