Comparison

Contest Log Visualizer vs DxQSO

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

DxQSO

Access and manage your amateur radio logbook from any mobile device. This app synchronizes with your PC/Mac logbook software, providing real-time updates, filtering options, and QSL alert notifications. Upload and download log data easily for various operations.

Highlights
  • Real-time logbook synchronization
  • Mobile access to logbook data
  • QSL alert notifications
  • Filter log entries by various criteria
  • Upload and download log data in ADIF format
  • Support for multiple stations
  • Bidirectional integration with LoTW
Features
Read full description

DxQSO puts your entire operating life in your pocket — and instead of making you check, it tells you. When QSOs are confirmed or when you get a new confirmed DXCC, state (overall or band based) DxQSO let's you know with either in-app alerts or an email (your choice). Let your friends or club members also know. Find our what they are working on. It works with the logging software you already use — Log4OM, N1MM+, Ham Radio Deluxe, WSJT-X, SmartSDR, SDR Control, the POTA app, and more. Nothing to relearn. DxQSO connects to all of it and brings it together into one living record you carry everywhere. YOUR LOGBOOK, IN YOUR POCKET Your complete operating history — every contact, across every log and every station — on your phone. Browse, search, and filter by call sign, band, mode, country, or DXCC entity, and see at a glance which contacts are confirmed and which are still pending. At the dinner table, on the commute, or in the field, your shack is always with you. QSL ALERTS Any logging app shows the QSOs you have worked — that is just a list. What matters is when they become confirmed QSLs. When LoTW® or QRZ confirms one, DxQSO pushes an alert to your phone. No more opening your logging app to check. No more waiting to get back to the shack. ACHIEVEMENT ALERTS DxQSO knows what you are chasing. The moment a confirmed QSL earns you a new DXCC entity, a new state toward Worked All States or a new grid your phone tells you — with the award it counts toward. Your progress comes to you, in real time. DxSOCIAL — YOUR CLUB AND FRIENDS, LIVE DxSocial is private space for your club, team, and friends, built right into DxQSO. Your club or contest team gets a private area with group messaging, shared files, and forums to plan activations, contests, and Field Day. Follow your friends to see their real time operating activity and achievements as they happen — and share your own. It comes alive during Field Day, major contests, and DX expeditions. ONE RECORD ACROSS EVERY LOG Run a single logbook at home, or juggle a home shack, contest station, remote rig, and POTA field kit — DxQSO accepts ADIF from any source and consolidates everything into one searchable, always-current record. Keep the software you love; DxQSO does the bringing-together. REAL-TIME LOG CAPTURE The Network Listener captures QSOs automatically from SmartSDR, SDR Control, and any app that supports the N1MM UDP broadcast protocol. Log a contact at your radio and it is in DxQSO instantly — no export, no waiting. BUILT FOR POTA, SOTA & PORTABLE OPS In the field, DxQSO is your real-time pipeline to LoTW and QRZ. Upload your ADIF on the spot and DxQSO submits it immediately, or let the Network Listener sync every QSO as you log it. When hunters confirm your contacts, your phone tells you the moment they are credited — so you go home already knowing. DX-TQSL integration keeps your full QSO history with you whether or not you use LoTW. Sign up at dxqso.net and bring every one of your logs with you. 73 de DX Development Corporation If you choose to upgrade to a Member subscription of DxQSO, you will be charged $29.99 US each year as a "DxQSO" subscription in your Apple App Store account. The subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. You may cancel at any time (by turning off auto renewal) using your Apple Store account prior to the day of the annual renewal. Please see our Terms and Conditions at: https://dxqso.org/terms and our Privacy Policy at https://dxqso.org/privacy. Logbook of The World and LoTW are registered trademarks of the American Radio Relay League (ARRL). QRZ and QRZ.com are trademarks of QRZ, LLC. DxQSO is not affiliated with or endorsed by the ARRL or QRZ, LLC.

Screenshots

DxQSO4 screens

Verdict

The call

The clearest difference is in-app purchases: Contest Log Visualizer at none against DxQSO's 1. Contest Log Visualizer also leads on iOS requirement (10.3 vs 15.6). DxQSO's advantage is device support (3 vs 1). On price, rating, ratings volume and update cadence 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. DxQSO sells 1 in-app purchase, starting at $29.99 per year. Contest Log Visualizer asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Contest Log Visualizer against 5.0 for DxQSO. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UpkeepUpdate frequency

Contest Log Visualizer ships an update every 6 weeks, DxQSO every 2 months. The most recent releases landed on September 15, 2026 and September 11, 2026 respectively.

Scorecard4 real differences · 6 level
Contest Log Visualizer versus DxQSO: the parameters behind the verdict, then further details
ParameterContest Log VisualizerDxQSO
PriceFreeFree
Rating5.0 (1 ratings)5.0 (1 ratings)
Positive reviews100.0% of reviews—
Number of ratings11
Update frequencyEvery 6 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPadiPhone, iPad, iPod — better
Requires iOS10.3 — better15.6
Further details — not scored
Size2 MB56 MB
Age rating4+4+
DeveloperKazunori WatanabeDX Development Corporation

Customer experience

Contest Log Visualizer

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

DxQSO

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Contest Log Visualizer

No in-app purchases

1 purchases

DxQSO

Subscriptions1
  • DxQSO Annually$29.991 Year

Questions

Is Contest Log Visualizer free?
Contest Log Visualizer is free to download, with no in-app purchases.
Is DxQSO free?
DxQSO is free to download, with in-app purchases available.
Which has better reviews, Contest Log Visualizer or DxQSO?
Contest Log Visualizer and DxQSO are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do Contest Log Visualizer or DxQSO have ads?
Neither Contest Log Visualizer nor DxQSO shows ads.
Which is updated more often, Contest Log Visualizer or DxQSO?
Contest Log Visualizer ships an update every 6 weeks, and DxQSO every 2 months. Most recently, Contest Log Visualizer was updated on September 15, 2026 and DxQSO on September 11, 2026.

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