DXClock vs Seismoscope
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
DXClock
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Connect, collaborate, and operate smarter with DX Clock β the ultimate meeting place for amateur radio operators. Stay in touch with the global ham community. See whoβs logged on right now, view their callsign, name, location, and current frequency. Use the built-in chat to arrange skeds, share tips, or just chat. Key features include: β’ Real-time user directory β Find active stations by location or callsign. β’ Community chat β Interact with other hams and coordinate on-air meetings. β’ QSO Logging & Sharing β Log your contacts and share them with the community. β’ PSK Sync β Seamlessly integrate your PSK account data. β’ Propagation & Conditions β Solar indices, HF propagation, space weather, and more. β’ Weather Integration β Local and relevant forecasts for better operating. β’ Day-Night Map β Visualize global daylight/darkness to spot potential awake stations and greyline opportunities. β’ Clean, intuitive interface designed specifically for radio operators on iPhone and iPad. Whether youβre chasing DX, participating in nets, or just enjoying casual contacts, DX Clock brings the ham radio community together like never before. Perfect for contesters, DXers and new hams alike. Download now and join the DX Clock community β where hams meet on the air and online.
Seismoscope
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Seismoscope is designed as a fast and simple way view recent earthquakes near you, particularly for Australia. Earthquake data is sourced from the Seismology Research Centre (SRC, for the last 30 days), Earth Sciences New Zealand (GeoNet, last 100 events), and data from the last week is shown from Geoscience Australia (GA), GFZ Helmholtz Centre for Geosciences (GFZ), the U.S. Geological Survey (USGS), and the European-Mediterranean Seismological Centre (EMSC). Earthquakes that have occurred in the last 3 hours pulsate to highlight recent activity, and events older than 7 days are less prominent. For ease of interpretation, earthquakes are colour-coded as well as being sized by magnitude. Links to report Australian earthquakes to GA are available directly in the app, as are links to notify GeoNet, USGS, EMSC and GFZ events via their respective reporting pages.
Screenshots
Verdict
The clearest difference is price: Seismoscope at Free against DXClock's $2.99. Seismoscope also leads on update cadence (every 2 weeks vs every 5 weeks). DXClock's advantage is chart position (#180 vs unranked) and iOS requirement (15.1 vs 17.0). On ads, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Seismoscope is free to download; DXClock costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
DXClock ships an update every 5 weeks, Seismoscope every 2 weeks. The most recent releases landed on October 16, 2026 and October 4, 2026 respectively.
| Parameter | DXClock | Seismoscope |
|---|---|---|
| Price | $2.99 | Free β better |
| Update frequency | Every 5 weeks | Every 2 weeks β better |
| Ads | No | No |
| In-app purchases | No | No |
| Best chart rank | #180 β better | β |
| Devices | iPhone, iPad, iPod β better | iPhone, iPad |
| Requires iOS | 15.1 β better | 17.0 |
| Further details β not scored | ||
| Size | 44 MB | 3 MB |
| Age rating | 17+ | 4+ |
| Developer | Michael Rowe | ESS Earth Sciences |
In-app purchases
DXClock
No in-app purchases
Seismoscope
No in-app purchases









