# Attenuator vs Gilson Guardian

The clearest difference is in-app purchases: Gilson Guardian at none against Attenuator's 1. Gilson Guardian also leads on device support (3 vs 1) and iOS requirement (13.0 vs 17.6). On price and ads there is nothing between them.

Both are free to download. Attenuator sells 1 one-off in-app purchase. Gilson Guardian asks for nothing beyond the download.

## The numbers

| Metric | Attenuator | Gilson Guardian |
| --- | --- | --- |
| Price | Free | Free |
| 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 | — |
| Size | 1 MB | 65 MB |
| Requires iOS | 17.6 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Tim E. Burrow](https://appshunter.io/developer/367216557) | [Forney LP](https://appshunter.io/developer/1592128607) |

## 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 |


### Gilson Guardian

[App page](https://appshunter.io/ios/app/gilson-guardian/id6472252499)

**In-app purchases:** none


## Frequently asked questions

### Is Attenuator free?

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

### Is Gilson Guardian free?

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

### Do Attenuator or Gilson Guardian have ads?

Neither Attenuator nor Gilson Guardian 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.*