# Attenuator vs MatrixWatchFace

The clearest difference is price: Attenuator at Free against MatrixWatchFace's $2.99. MatrixWatchFace's advantage is in-app purchases (none vs 1) and chart position (#193 vs unranked). On ads, device support and iOS requirement there is nothing between them.

Attenuator is free to download; MatrixWatchFace costs $2.99 up front. Attenuator sells 1 one-off in-app purchase. MatrixWatchFace asks for nothing beyond the download.

## The numbers

| Metric | Attenuator | MatrixWatchFace |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[5.0 (8 ratings)](https://appshunter.io/ios/app/attenuator/id367216554/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 7 months | — |
| Monetization | Free with in-app purchases | — |
| Best chart rank | — | **#193** |
| Size | 1 MB | 4 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone | **iPhone, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Tim E. Burrow](https://appshunter.io/developer/367216557) | [佳文 陈](https://appshunter.io/developer/6809271618) |

## What reviewers say

### Attenuator

[App page](https://appshunter.io/ios/app/attenuator/id367216554)

Calculate output voltage, power, and attenuation based on input values and dB of attenuation. Features NMR-specific calculations for pulses and measures local magnetic fields and barometric pressure.

**Highlights:** Calculate output voltage and power, Specify input voltage (Vpp or Vrms), Calculate attenuation in dB, NMR pulse calculations, Measure local magnetic field, Display barometric pressure

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove all ads | $1.99 | one-time |


### MatrixWatchFace

[App page](https://appshunter.io/ios/app/matrixwatchface/id6811486841)

**Currently charting:** #193 Top Paid · Utilities (US App Store)

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is Attenuator free?

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

### Is MatrixWatchFace free?

MatrixWatchFace costs $2.99, with no in-app purchases.

### Do Attenuator or MatrixWatchFace have ads?

Neither Attenuator nor MatrixWatchFace 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.*