PMI View vs PQDIF Viewer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PMI View
This application provides a platform for viewing and analyzing power quality data from field devices. It allows real-time inspection of waveforms, vector diagrams, harmonics, and meter readings. Recordings can be easily downloaded, inspected, and exported.
- Real-time waveform viewing
- Vector diagram analysis
- Harmonics inspection
- Meter readings
- Downloadable recordings
- Exportable data
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Power Monitors’ PMI View is the premiere way to view and analyze power quality data. PMI View is a powerful platform to collect, analyze, and inspect field devices connected through direct wifi connections or TCP. PMI View allows you to see the live waveforms, vector diagrams, harmonics, and meter readings in real time. Recordings can be downloaded, inspected, and exported with ease. Step into the next generation of power quality software.
PQDIF Viewer
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PQDIF Viewer is a simple to use tool to chart Power Quality data in PQD files (IEEE 1159.3-2025). Open files from Mail, Files, or AirDrop, or tap the bundled sample to try it out. Built for power system engineers who need to inspect data on the go.
Screenshots
Verdict
The clearest difference is update cadence: PQDIF Viewer at every 3 days against PMI View's every 2 months. PQDIF Viewer also leads on iOS requirement (15.6 vs 18.0). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
PMI View ships an update every 2 months, PQDIF Viewer every 3 days. The most recent releases landed on September 17, 2026 and September 21, 2026 respectively.
| Parameter | PMI View | PQDIF Viewer |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (4 ratings) — better | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 2 months | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 18.0 | 15.6 — better |
| Further details — not scored | ||
| Size | 242 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Power Monitors, Incorporated | Russell Patterson |
In-app purchases
PMI View
No in-app purchases
PQDIF Viewer
No in-app purchases
Questions
Is PMI View free?
Is PQDIF Viewer free?
Do PMI View or PQDIF Viewer have ads?
Which is updated more often, PMI View or PQDIF Viewer?
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