iAttenuation vs Satellite Imagery Data Process
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iAttenuation
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.
- 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%)
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Passive attenuators are two port / four terminal resistive networks that are designed to reduce (or attenuate, hence their name) the power between a source and load. They can also match the impedance between the source and load. They are used in a variety of audio and radio / RF applications. iAttenuation calculates resistor values for the following types of attenuator networks: Tee Network Pi Network H (Balanced Tee) O (Balanced Pi) Minimum Loss Pad Just enter in the input and output impedance values, and the desired attenuation, and iAttenuation does the rest! iAttenuation can also adjust the calculated resistor values to match the nearest standard 1%, 5%, or 10% tolerance values.
Satellite Imagery Data Process
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Satellite Imagery Data Processing brings advanced satellite image analysis and remote sensing tools to iPhone and iPad in a modern, intuitive workspace. Import, process, visualize, and export satellite imagery with powerful tools designed for researchers, GIS professionals, environmental analysis, agriculture monitoring, urban planning, and geospatial exploration. Work with multispectral imagery, apply intelligent enhancement, analyze terrain and vegetation, and transform raw satellite datasets into actionable insights—all from a mobile experience optimized for performance and precision. Features: • Import satellite imagery and geospatial raster datasets • Support for GeoTIFF, TIFF, JPEG2000, NetCDF, HDF5, and more • View multispectral layers with smooth zoom and GPU acceleration • Generate NDVI, false color, infrared, thermal, and custom visualizations • Apply image enhancement, correction, denoising, and cloud reduction • Perform band analysis, classification, and change detection workflows • AI-assisted land, water, road, and object recognition • Measure distance, area, and geographic regions • Create professional exports and reports • Sync projects across devices and cloud storage providers Designed for modern iOS devices, Satellite Imagery Data Processing combines scientific capability with an elegant interface built for mobile productivity. Upgrade to Pro for advanced processing, AI analysis, unlimited exports, and expanded cloud workflows. We currently offer the following auto-renewing subscription option: -$7.99 per month -$34.99 per month Payment will be charged to iTunes Account at confirmation of purchase. Your subscription will automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Your account will be charged for renewal within 24-hours prior to the end of the current period. Subscriptions may be managed and auto-renewal may be turned off by going to the Account Settings after purchase. No cancellation of the current subscription is allowed during active subscription period. • Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable Terms of Use: https://tos.nguyenanhapps.com Privacy Policy: https://privacy.nguyenanhapps.com
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | iAttenuation | Satellite Imagery Data Process |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 3.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 69 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 1 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Black Cat Systems | Nguyen Anh |
In-app purchases
iAttenuation
No in-app purchases
Satellite Imagery Data Process
- Satellite Imagery Premium Monthly$7.991 Month
- Satellite Imagery Premium Yearly$34.991 Year
- Satellite Imagery Premium Lifetime$49.99





