Comparison

Contest Log Visualizer vs SWLog

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

Head to head
About

Contest Log Visualizer

This app allows users to download and visualize past contest log files from websites. It displays station activity by hour and band, supporting various major ham radio contests. Offline use is available for the last downloaded log.

Highlights
  • Download past contest logs
  • Visualize station activity by hour
  • Visualize station activity by band
  • Supports multiple major ham radio contests
  • Offline access for last downloaded log
  • Slide show and real-time modes
Features
Read full description

Download past contest log file from web site and display where station worked in specific hours and band. Currently available to download includes following contest and year, CQ WW SSB 2005 - 2019 CQ WW CW 2005 - 2019 CQ WW RTTY 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019 CQ WPX SSB 2010, 2011, 2012, 2013, 2014, 2015, 2017, 2018, 2019 CQ WPX CW 2010, 2011, 2012, 2013, 2014, 2015, 2017, 2018, 2019 CQ WPX RTTY 2013, 2014, 2015, 2017, 2018, 2019 IARU (WRTC2014 test station) 2012, 2013 WRTC2014 Russian DX 2012 only In order to download public logs you need internet access and only last log downloaded is saved on your iPad for offline use. Use top left button to download specific log. Top right button enable you to choose slide show/real time mode. Use bottom slider to change time, bottom right button to move bands. If you use older iPad, "Show Line" with slide show mode or real time mode may not work well. If this is the case, try to use "Show Line" only with manual mode.

About

SWLog

Log amateur radio QSOs and broadcast transmissions on your mobile device. Supports QRZ lookups and various broadcast schedule queries for station identification. Features GPS integration and local log browsing, with the ability to upload to a main logging program.

Highlights
  • Log amateur radio QSOs
  • Log broadcast transmissions
  • QRZ lookups
  • Broadcast schedule lookups
  • GPS integration
  • Upload logs to main program
Features
Read full description

SWLog is a mobile companion application to the full SWLog suite or logging and radio control applications. SWLog allows amateur radio and broadcast (shortwave, AM/FM, and utility) transmissions to be logged locally and later uploaded to the main logging program. QRZ can be used for lookups for amateur radio logs. For broadcast logs, various program schedules from ADDX, AOKI, EIBI, FCC, HFCC, ILGRadio, and SWSkeds are queried to aid in identifying the station. Features of this app include: * Download a preset list of locations, radios, and broadcast program schedules * Add an amateur radio QSO * Supports QRZ lookups * Monitor POTA spots * Add a POTA spot * Add a broadcast log * Supports lookups to various program schedules * GPS integration including calculating the current grid square to 10 characters * View/Browse locally added logs * Upload logs to the main logging program

Screenshots

SWLog4 screens

Verdict

The call

The clearest difference is review sentiment: Contest Log Visualizer at 100% against SWLog's 25%. Contest Log Visualizer also leads on iOS requirement (10.3 vs 16.1). SWLog's advantage is update cadence (fortnightly vs every 6 weeks). On price, ads, in-app purchases and monetization model 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

Contest Log Visualizer ships an update every 6 weeks, SWLog fortnightly. The most recent releases landed on September 15, 2026 and September 3, 2026 respectively.

Scorecard3 real differences · 7 level
Contest Log Visualizer versus SWLog: the parameters behind the verdict, then further details
ParameterContest Log VisualizerSWLog
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews — better25.0% of reviews
Number of ratings1 — better—
Update frequencyEvery 6 weeksFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPadiPhone, iPad — better
Requires iOS10.3 — better16.1
Further details — not scored
Size2 MB305 MB
Age rating4+4+
DeveloperKazunori WatanabeRobert Sillett

Customer experience

Contest Log Visualizer

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

SWLog

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews4 reviews
Positive25.0%
Neutral0.0%
Negative75.0%

In-app purchases

None

Contest Log Visualizer

No in-app purchases

None

SWLog

No in-app purchases

Questions

Is Contest Log Visualizer free?
Contest Log Visualizer is free to download, with no in-app purchases.
Is SWLog free?
SWLog is free to download, with no in-app purchases.
Do Contest Log Visualizer or SWLog have ads?
Neither Contest Log Visualizer nor SWLog shows ads.
Which is updated more often, Contest Log Visualizer or SWLog?
Contest Log Visualizer ships an update every 6 weeks, and SWLog fortnightly. Most recently, Contest Log Visualizer was updated on September 15, 2026 and SWLog on September 3, 2026.

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