Comparison

WFS210 vs Comtrade Viewer

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head

COMTRADE record viewer.

Free

🔧 Utilities

No ratingsView app →

About

WFS210

This application controls a portable, battery-powered digital storage oscilloscope designed for tablet use. It allows users to connect to the device's WLAN network and begin measurements immediately.

Highlights

WLAN connectivity
Dual channel oscilloscope
Tablet control
Portable and battery-powered
Source code available

Features

Read full description

The Velleman WFS210 is the world's first wlan dual channel digital storage oscilloscope geared towards tablet computers. The WFS210 is a compact, portable battery powered fully featured two channel oscilloscope. With this app you can control the WFS210 Oscilloscope Just connect to the WFS210 WLAN network open the app and you are good to go. You can find the source code on http://www.github.com/Velleman/iWFS210

About

Comtrade Viewer

Features

Read full description

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: • COMTRADE (ASCII and Binary) • SEL .cev, .eve, and .evzip event records • SEL Motor Start Reports (.msr and .cmsr) • Beckwith M-3425A, M-3430, and M-3311A .osc records • S&C IntelliRupter Fault Interrupter records (.wfc) • 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.

Screenshots

Comtrade Viewer4 screens

Verdict

The call

The clearest difference is update cadence: Comtrade Viewer at fortnightly against WFS210's every 3 months. Comtrade Viewer also leads on device support (3 vs 1). WFS210's advantage is iOS requirement (8.0 vs 15.0). On price, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

WFS210 ships an update every 3 months, Comtrade Viewer fortnightly. The most recent releases landed on September 29, 2026 and September 17, 2026 respectively.

Scorecard3 real differences · 5 level

WFS210 versus Comtrade Viewer: the parameters behind the verdict, then further details
Parameter	WFS210	Comtrade Viewer
Price	Free	Free
Positive reviews	20.0% of reviews	—
Update frequency	Every 3 months	Fortnightly — better
Ads	No	No
In-app purchases	No	No
Monetization	Free	—
Devices	iPad	iPhone, iPad, iPod — better
Requires iOS	8.0 — better	15.0
Further details — not scored
Size	23 MB	4 MB
Age rating	4+	4+
Developer	Velleman nv	Russell Patterson

In-app purchases

None

WFS210

No in-app purchases

None

Comtrade Viewer

No in-app purchases

Questions

Is WFS210 free?

WFS210 is free to download, with no in-app purchases.

Is Comtrade Viewer free?

Comtrade Viewer is free to download, with no in-app purchases.

Do WFS210 or Comtrade Viewer have ads?

Neither WFS210 nor Comtrade Viewer shows ads.

Which is updated more often, WFS210 or Comtrade Viewer?

WFS210 ships an update every 3 months, and Comtrade Viewer fortnightly. Most recently, WFS210 was updated on September 29, 2026 and Comtrade Viewer on September 17, 2026.