# SKM Mobile vs AMPFieldKit

The clearest difference is price: SKM Mobile at Free against AMPFieldKit's $9.99. SKM Mobile also leads on device support (3 vs 1) and iOS requirement (12.2 vs 17.6). AMPFieldKit's advantage is rating (5.0 vs 3.0) and in-app purchases (none vs 1). On ratings volume and ads there is nothing between them.

SKM Mobile is free to download; AMPFieldKit costs $9.99 up front. SKM Mobile sells 1 in-app purchase, starting at $299.99 per year. AMPFieldKit asks for nothing beyond the download.

AMPFieldKit holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 3 and 3 respectively.

SKM Mobile ships an update every 7 months, AMPFieldKit every 2 weeks. The most recent releases landed on October 16, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | SKM Mobile | AMPFieldKit |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Rating | [3.0 (3 ratings)](https://appshunter.io/ios/app/skm-mobile/id1543836977/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/ampfieldkit/id6764323469/reviews)** |
| Number of ratings | 3 | 3 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 weeks** |
| Monetization | Subscription | **Paid** |
| Size | 132 MB | 4 MB |
| Requires iOS | **12.2** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [S.K.M. SYSTEMS ANALYSIS, INC.](https://appshunter.io/developer/1543836979) | [AMP LLC (AL)](https://appshunter.io/developer/1895644769) |

## What reviewers say

### SKM Mobile

[App page](https://appshunter.io/ios/app/skm-mobile/id1543836977)

Capture field data, view study results, and manage equipment settings on your mobile device. Seamlessly import information to your desktop program and enhance your workflow with on-the-go access to essential project details.

**Highlights:** Field data collection, View study results, Import data to desktop, Capture photos and videos, Scan QR codes, Scribble notes

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SKM Mobile Subscription | $299.99 | per year |


### AMPFieldKit

[App page](https://appshunter.io/ios/app/ampfieldkit/id6764323469)

This professional tool provides electricians and technicians with fast, accurate electrical calculations and essential reference data based on NEC guidelines. It offers a clean, mobile-optimized interface for real-world use, requiring no internet connection, ads, or subscriptions.

**Highlights:** Electrical Calculators (Power, Voltage Drop, Ampacity), Transformer & Motor Calculations, Conductor & Box Fill Calculations, Interactive Ohm's Law Chart, Unit Conversions & Material Properties, Offline Functionality

**In-app purchases:** none


## Frequently asked questions

### Is SKM Mobile free?

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

### Is AMPFieldKit free?

AMPFieldKit costs $9.99, with no in-app purchases.

### Which has better reviews, SKM Mobile or AMPFieldKit?

AMPFieldKit is rated higher. SKM Mobile averages 3.0 out of 5 from 3 ratings, while AMPFieldKit averages 5.0 from 3 ratings.

### Do SKM Mobile or AMPFieldKit have ads?

Neither SKM Mobile nor AMPFieldKit shows ads.

### Which is updated more often, SKM Mobile or AMPFieldKit?

SKM Mobile ships an update every 7 months, and AMPFieldKit every 2 weeks. Most recently, SKM Mobile was updated on October 16, 2026 and AMPFieldKit on October 15, 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.*