# Contest Log Visualizer vs DxQSO

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.

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.

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.

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.

## The numbers

| Metric | Contest Log Visualizer | DxQSO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/contest-log-visualizer/id709465260/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/dxqso/id6680187988/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Monetization | **Free** | Freemium |
| Size | 2 MB | 56 MB |
| Requires iOS | **10.3** | 15.6 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kazunori Watanabe](https://appshunter.io/developer/709465263) | [DX Development Corporation](https://appshunter.io/developer/1768237525) |

## What reviewers say

### Contest Log Visualizer

[App page](https://appshunter.io/ios/app/contest-log-visualizer/id709465260)

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:** macOS Compatibility

**In-app purchases:** none


### DxQSO

[App page](https://appshunter.io/ios/app/dxqso/id6680187988)

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:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DxQSO Annually | $29.99 | per year |


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*