PTI Transformer vs SKM Mobile
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PTI Transformer
This app calculates electrical transformer performance metrics like current, voltage, efficiency, and regulation. It also offers SI/Metric conversions for various physical quantities and includes a tool for estimating ship dates based on order time.
- Transformer current, voltage, efficiency, and regulation calculation
- SI/Metric unit conversions
- Speed, force, power, area, pressure, volume, temperature, weights & measures conversions
- Ship date estimation tool
- Information about the developer
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PTI "Transform"er calculates electrical transformer current, phase voltage, efficiency & regulation at various loads and power factors and provides SI/Metric conversions for Speed, Force, Power, Area, Pressure, Volume, Temperature, Weights & Measures. A handy calculator for determining ship date from any date using weeks after order (ARO) is also included. Interesting facts about PTI and what we do appear as you navigate through the application. Disclaimer: All conversions if used for critical calculations should be verified with a secondary source.
SKM Mobile
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.
- Field data collection
- View study results
- Import data to desktop
- Capture photos and videos
- Scan QR codes
- Scribble notes
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This SKM Mobile app requires a $299 USD/year subscription to use. Take SKM on the go! The SKM Mobile app provides an intuitive experience that lets you quickly and easily collect data from the field and seamlessly import it to your PTW desktop program! You can also view study results on your phone or tablet - such as what arc flash PPE to wear or to verify equipment settings! View onlines, take pictures, videos, scan QR codes, scribble notes, and more! Your subscription will be charged to your iTunes account at confirmation of purchase and will automatically renew (at the duration selected) unless auto-renew is turned off at least 24 hours before the end of the current period. The current subscription may not be canceled during the active subscription period; however, you can manage your subscription and/or turn off auto-renewal by visiting your iTunes Account Settings after purchase. Terms of use: https://skm.com/terms-of-use.html Privacy policy: https://www.skm.com/privacy.html
Screenshots
Verdict
The clearest difference is rating: PTI Transformer at 5.0 against SKM Mobile's 3.0. PTI Transformer also leads on in-app purchases (none vs 1). SKM Mobile's advantage is ratings volume (3 vs 1). On price, update cadence, 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
Both are free to download. SKM Mobile sells 1 in-app purchase, starting at $299.99 per year. PTI Transformer asks for nothing beyond the download.
PTI Transformer holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 1 and 3 respectively.
PTI Transformer ships an update every 11 months, SKM Mobile every 7 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.
| Parameter | PTI Transformer | SKM Mobile |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 3.0 (3 ratings) |
| Number of ratings | 1 | 3 — better |
| Update frequency | Every 11 months | Every 7 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Subscription |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 — better | 12.2 |
| Further details — not scored | ||
| Size | 3 MB | 132 MB |
| Age rating | 4+ | 4+ |
| Developer | Push Interactions, Inc. | S.K.M. SYSTEMS ANALYSIS, INC. |
Customer experience
PTI Transformer
SKM Mobile
In-app purchases
PTI Transformer
No in-app purchases
SKM Mobile
- SKM Mobile Subscription$299.991 Year
Questions
Is PTI Transformer free?
Is SKM Mobile free?
Which has better reviews, PTI Transformer or SKM Mobile?
Do PTI Transformer or SKM Mobile have ads?
Which is updated more often, PTI Transformer or SKM Mobile?
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