Comtrade Viewer vs GridHUBB
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Comtrade Viewer
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COMTRADE Viewer is an easy-to-use tool for viewing and analyzing power system event records. Display waveforms directly on your device. Now includes incremental based double-ended fault locator based on method of Kasztenny and Smelich. Supported file formats include: β’ COMTRADE (ASCII and Binary) β’ SEL .cev, .eve, and .evzip event records β’ SEL Motor Start Reports (.msr and .cmsr) β’ Beckwith M-3425A, M-3430, and M-3311A .osc records β’ S&C IntelliRupter Fault Interrupter records (.wfc) β’ ATP/EMTP .pl4 files Open files directly from Mail, Files, AirDrop, and other supported apps, or explore the included sample records to get started. Built for power system engineers and technicians who need quick access to event records while in the field, at the office, or on the go.
GridHUBB
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GridHUBBβ’ is a complementary software tool for the administration of Hubbell Utility Solutions intelligent devices. Quickly manage, and commission settings in an intuitive application that is packed with powerful tools and advanced reporting. Adaptive Workspace - Windows & iOS to work everywhere you do, from desktop to mobile phone. Multiple language settings ensure accessibility for diverse workforces. Easy setup and navigation - Frustration-free settings management offers seamless device setup and easy navigation Actionable Insights - Advanced reporting tools provide helpful insights and actionable data to support decision-making. Embedded Guidance - Guided self-help with embedded reference and training materials means help is just a click away
Screenshots
Verdict
The clearest difference is update cadence: Comtrade Viewer at fortnightly against GridHUBB's every 4 months. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Comtrade Viewer ships an update fortnightly, GridHUBB every 4 months. The most recent releases landed on September 17, 2026 and September 22, 2026 respectively.
| Parameter | Comtrade Viewer | GridHUBB |
|---|---|---|
| Price | Free | Free |
| Update frequency | Fortnightly β better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod β better | iPhone, iPad |
| Requires iOS | 15.0 β better | 16.0 |
| Further details β not scored | ||
| Size | 4 MB | 161 MB |
| Age rating | 4+ | 4+ |
| Developer | Russell Patterson | Hubbell Inc |
In-app purchases
Comtrade Viewer
No in-app purchases
GridHUBB
No in-app purchases
Questions
Is Comtrade Viewer free?
Is GridHUBB free?
Do Comtrade Viewer or GridHUBB have ads?
Which is updated more often, Comtrade Viewer or GridHUBB?
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