# PMI View vs Blacklist Datalog Viewer

The clearest difference is price: PMI View at Free against Blacklist Datalog Viewer's $3.99. Blacklist Datalog Viewer's advantage is update cadence (every 2 weeks vs every 2 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

PMI View is free to download; Blacklist Datalog Viewer costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

PMI View ships an update every 2 months, Blacklist Datalog Viewer every 2 weeks. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | PMI View | Blacklist Datalog Viewer |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/pmi-view/id6465390024/reviews)** | — |
| Number of ratings | **4** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 197 MB | 2 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Power Monitors, Incorporated](https://appshunter.io/developer/540822326) | [Dimitri Antona](https://appshunter.io/developer/6775074138) |

## What reviewers say

### PMI View

[App page](https://appshunter.io/ios/app/pmi-view/id6465390024)

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.

**Highlights:** Real-time waveform viewing, Vector diagram analysis, Harmonics inspection, Meter readings, Downloadable recordings, Exportable data

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

**In-app purchases:** none


### Blacklist Datalog Viewer

[App page](https://appshunter.io/ios/app/blacklist-datalog-viewer/id6775074136)

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

**In-app purchases:** none


## Frequently asked questions

### Is PMI View free?

PMI View is free to download, with no in-app purchases.

### Is Blacklist Datalog Viewer free?

Blacklist Datalog Viewer costs $3.99, with no in-app purchases.

### Do PMI View or Blacklist Datalog Viewer have ads?

Neither PMI View nor Blacklist Datalog Viewer shows ads.

### Which is updated more often, PMI View or Blacklist Datalog Viewer?

PMI View ships an update every 2 months, and Blacklist Datalog Viewer every 2 weeks. Most recently, PMI View was updated on November 3, 2026 and Blacklist Datalog Viewer on November 5, 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.*