# Attenuator vs ScanYourWorld

The clearest difference is update cadence: ScanYourWorld at every 2 weeks against Attenuator's every 7 months. ScanYourWorld also leads on device support (3 vs 1) and iOS requirement (14.5 vs 17.6). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Attenuator sells 1 one-off in-app purchase and ScanYourWorld sells 2 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

Attenuator ships an update every 7 months, ScanYourWorld every 2 weeks. The most recent releases landed on October 1, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Attenuator | ScanYourWorld |
| --- | --- | --- |
| 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 | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 1 MB | 7 MB |
| Requires iOS | 17.6 | **14.5** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Tim E. Burrow](https://appshunter.io/developer/367216557) | [Devpoint GmbH](https://appshunter.io/developer/1098114906) |

## 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 |


### ScanYourWorld

[App page](https://appshunter.io/ios/app/scanyourworld/id1563348124)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Use the PRO functions | $6.99 | per month |
| Subscribe to PRO functions | $66.99 | per year |


## Frequently asked questions

### Is Attenuator free?

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

### Is ScanYourWorld free?

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

### Do Attenuator or ScanYourWorld have ads?

Neither Attenuator nor ScanYourWorld shows ads.

### Which is updated more often, Attenuator or ScanYourWorld?

Attenuator ships an update every 7 months, and ScanYourWorld every 2 weeks. Most recently, Attenuator was updated on October 1, 2026 and ScanYourWorld on October 2, 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.*