# DXClock vs Seismoscope

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.

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.

## The numbers

| Metric | DXClock | Seismoscope |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 2 weeks** |
| Best chart rank | **#180** | — |
| Size | 44 MB | 3 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Michael Rowe](https://appshunter.io/developer/1872635060) | [ESS Earth Sciences](https://appshunter.io/developer/1424839112) |

## What reviewers say

### DXClock

[App page](https://appshunter.io/ios/app/dxclock/id6761582408)

**Currently charting:** #180 Top Paid · Utilities (US App Store)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Seismoscope

[App page](https://appshunter.io/ios/app/seismoscope/id6799849611)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is DXClock free?

DXClock costs $2.99, with no in-app purchases.

### Is Seismoscope free?

Seismoscope is free to download, with no in-app purchases.

### Do DXClock or Seismoscope have ads?

Neither DXClock nor Seismoscope shows ads.

### Which is updated more often, DXClock or Seismoscope?

DXClock ships an update every 5 weeks, and Seismoscope every 2 weeks. Most recently, DXClock was updated on October 16, 2026 and Seismoscope on October 4, 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.*