Contest Log Visualizer vs SWLog
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
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.
- Log amateur radio QSOs
- Log broadcast transmissions
- QRZ lookups
- Broadcast schedule lookups
- GPS integration
- Upload logs to main program
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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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
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.
| Parameter | Contest Log Visualizer | SWLog |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews — better | 25.0% of reviews |
| Number of ratings | 1 — better | — |
| Update frequency | Every 6 weeks | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPad | iPhone, iPad — better |
| Requires iOS | 10.3 — better | 16.1 |
| Further details — not scored | ||
| Size | 2 MB | 305 MB |
| Age rating | 4+ | 4+ |
| Developer | Kazunori Watanabe | Robert Sillett |
Customer experience
Contest Log Visualizer
SWLog
In-app purchases
Contest Log Visualizer
No in-app purchases
SWLog
No in-app purchases
Questions
Is Contest Log Visualizer free?
Is SWLog free?
Do Contest Log Visualizer or SWLog have ads?
Which is updated more often, Contest Log Visualizer or SWLog?
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