# iAttenuation vs Satellite Imagery Data Process

The clearest difference is price: Satellite Imagery Data Process at Free against iAttenuation's $2.99. Satellite Imagery Data Process also leads on update cadence (fortnightly vs every 69 months). iAttenuation's advantage is in-app purchases (none vs 3) and iOS requirement (15.6 vs 17.0). On ads and device support there is nothing between them.

Satellite Imagery Data Process is free to download; iAttenuation costs $2.99 up front. Satellite Imagery Data Process sells 3 in-app purchases, starting at $7.99 per month. iAttenuation asks for nothing beyond the download.

iAttenuation ships an update every 69 months, Satellite Imagery Data Process fortnightly. The most recent releases landed on September 18, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | iAttenuation | Satellite Imagery Data Process |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/iattenuation/id305626528/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 69 months | **Fortnightly** |
| Monetization | Paid | — |
| Size | 1 MB | 7 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Black Cat Systems](https://appshunter.io/developer/301047032) | [Nguyen Anh](https://appshunter.io/developer/882187560) |

## What reviewers say

### iAttenuation

[App page](https://appshunter.io/ios/app/iattenuation/id305626528)

This app calculates resistor values for various passive attenuator networks. It supports T, Pi, H, O, and Minimum Loss Pad configurations, allowing users to input impedance and desired attenuation. It can also adjust resistor values to standard tolerances.

**Highlights:** Calculates resistor values for passive attenuator networks, Supports Tee, Pi, H, O, and Minimum Loss Pad configurations, Input and output impedance calculation, Desired attenuation input, Adjusts resistor values to standard tolerances (1%, 5%, 10%)

**Features:** macOS Compatibility

**In-app purchases:** none


### Satellite Imagery Data Process

[App page](https://appshunter.io/ios/app/satellite-imagery-data-process/id6786141237)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Satellite Imagery Premium Monthly | $7.99 | per month |
| Satellite Imagery Premium Yearly | $34.99 | per year |
| Satellite Imagery Premium Lifetime | $49.99 | one-time |


## Frequently asked questions

### Is iAttenuation free?

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

### Is Satellite Imagery Data Process free?

Satellite Imagery Data Process is free to download, with in-app purchases available.

### Do iAttenuation or Satellite Imagery Data Process have ads?

Neither iAttenuation nor Satellite Imagery Data Process shows ads.

### Which is updated more often, iAttenuation or Satellite Imagery Data Process?

iAttenuation ships an update every 69 months, and Satellite Imagery Data Process fortnightly. Most recently, iAttenuation was updated on September 18, 2026 and Satellite Imagery Data Process on September 19, 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.*