# Attenuator vs GPS Car Control

The clearest difference is in-app purchases: GPS Car Control at none against Attenuator's 1. GPS Car Control also leads on update cadence (every 5 days vs every 7 months) and device support (3 vs 1). On price and ads there is nothing between them.

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

Attenuator ships an update every 7 months, GPS Car Control every 5 days. The most recent releases landed on October 1, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Attenuator | GPS Car Control |
| --- | --- | --- |
| 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 | **Every 5 days** |
| Monetization | Free with in-app purchases | — |
| Size | 1 MB | 17 MB |
| Requires iOS | 17.6 | **6.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Tim E. Burrow](https://appshunter.io/developer/367216557) | [乐毛 张](https://appshunter.io/developer/1042152967) |

## 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 |


### GPS Car Control

[App page](https://appshunter.io/ios/app/gps-car-control/id1322281594)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Attenuator free?

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

### Is GPS Car Control free?

GPS Car Control is free to download, with no in-app purchases.

### Do Attenuator or GPS Car Control have ads?

Neither Attenuator nor GPS Car Control shows ads.

### Which is updated more often, Attenuator or GPS Car Control?

Attenuator ships an update every 7 months, and GPS Car Control every 5 days. Most recently, Attenuator was updated on October 1, 2026 and GPS Car Control on October 10, 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.*