# Contest Log Visualizer

> Visualize ham radio contest logs by time and band, with offline access. (iPhone/iPad app by Kazunori Watanabe.)

- Source: https://appshunter.io/ios/app/contest-log-visualizer/id709465260 (this page in markdown: same URL + `.md`)
- Developer: [Kazunori Watanabe](https://appshunter.io/developer/709465263)
- Category: Lifestyle, Reference
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 10.3 · 2 MB
- Languages: American English
- Released: 2013-10-09
- Data updated: 2026-06-11
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/contest-log-visualizer/id709465260/reviews.md

## What is Contest Log Visualizer?

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.

## Key features

- 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

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/contest-log-visualizer/id709465260/reviews.md

### 5/5 — Outstanding App

*2013-10-15*

A must to have for preparing for a contest. The graphic presentation makes it easy to interpret the data. With the addition of more contests results, this app will be invaluable.

## Frequently asked questions about Contest Log Visualizer

### What ham radio contests does Contest Log Visualizer support?

Contest Log Visualizer supports numerous contests including CQ WW SSB, CQ WW CW, CQ WW RTTY, CQ WPX SSB, CQ WPX CW, CQ WPX RTTY, IARU, WRTC2014, and Russian DX. Specific years are available for each contest, generally ranging from 2005 to 2019.

### Can I use Contest Log Visualizer offline?

Yes, Contest Log Visualizer allows offline use. Only the last downloaded log file is saved on your iPad for offline viewing and analysis.

### What devices is Contest Log Visualizer available on?

Contest Log Visualizer is currently only available for iPad devices. It was released on October 9, 2013, and its latest version is 4.8, updated on June 27, 2020.

### How do I download a contest log with Contest Log Visualizer?

To download a specific log, use the top-left button within the app. You will need an internet connection to download the logs from the website.

### What are the different display modes in Contest Log Visualizer?

Contest Log Visualizer offers a slide show mode and a real-time mode, accessible via the top-right button. You can also manually adjust time and bands using the bottom slider and button.

### Is Contest Log Visualizer free to use?

Yes, Contest Log Visualizer is completely free to download and use. It does not feature in-app purchases or advertisements.

### What is the age rating for Contest Log Visualizer?

Contest Log Visualizer has an age rating of 4+. This indicates it is suitable for users of all ages, with no mature content.

### What should I do if the 'Show Line' feature doesn't work well on my older iPad?

If you are using an older iPad and experience issues with the 'Show Line' feature in slide show or real-time modes, try using 'Show Line' only in manual mode for better performance.

## Version history (last 5 releases)

### 4.8 — 2020-06-27

All contest log files up to 2019 are available to download. 

Wish  you enjoy using app!

### 4.7 — 2019-06-26

Thanks for using my app! 

In this version, app can access all 2018 log data. 

As usual, any comment is appreciated at mj0cfw@gmail.com
Enjoy!

### 4.5 — 2018-10-23

App will download and display CQ WW SSB and CW 2017 data. Wish still enough time to analyse before this year's event. 

There is also some performance enhancement. 

Thanks for using app. Any feedback is appreciated. Send it to mj0cfw@gmail.com

### 4.4 — 2017-02-28

New functionality added. 

When you tap one of red pins, pop up shows callsign of station worked. 

Note: If station worked more than one in same location (defined in CTY file) in same clock hour, then only one last worked callsign would be displayed. 

As usual, any feedbacks are welcome at mj0cfw@gmail.com
Enjoy the app!

### 4.3 — 2017-02-07

Thanks for using my app. 
This version enable you to view CQ WW RTTY 2016 and CQ WPX RTTY 2016 data. 

As usual, any feedback are welcome at mj0cfw@gmail.com

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## More apps by Kazunori Watanabe

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- [GLookUp](https://appshunter.io/ios/app/glookup/id992189796)

All apps by Kazunori Watanabe: https://appshunter.io/developer/709465263

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-11.*