Seismometer vs Shortwave Guide
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Seismometer
This app uses your device's accelerometer to detect and measure vibrations, shakes, and movements. It calculates the energy of these movements and displays them on a logarithmic scale, offering various signal filters and recording capabilities.
- Measure vibrations and movements
- Uses device accelerometer
- Calculates energy of movements
- Logarithmic scale display
- Signal filters
- Recordings and CSV export
- UDP Streaming
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Measure everything that vibrates, shakes or moves. Or why not an actual earthquake? Seismometer uses your iPhone's built in accelerometer to measure movements in two axes, calculate the resulting energy and draw the results on a rolling logarithmic scale. Features: * Different signal filters * Highly configurable * Recordings * CSV exporting of recordings * UDP Streaming http://yellowagents.com/seismometer/ for more info and examples of how to use the streaming protocol.
Shortwave Guide
This application displays a real-time schedule of shortwave radio broadcasts worldwide, sourced from the EiBi database. Users can rescan for updates, view specific frequencies, and update the entire broadcast schedule database.
- Worldwide shortwave broadcast schedule
- Real-time station listings
- Frequency viewing
- Database updates
- EiBi database integration
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The app shows a schedule of shortwave radio broadcasting. Information taken from EiBi database. When you run the application, you will see a list of radio stations, broadcasting currently worldwide. To update the scanning time in the menu, click "Rescan". To view all the selected radio frequency specifically, use a right button. When you first launch the app, or to update the schedule database, choose "Update Database".
Screenshots
Verdict
The clearest difference is review sentiment: Seismometer at 65% against Shortwave Guide's 20%. Seismometer also leads on price ($1.99 vs $8.99) and iOS requirement (8.0 vs 15.6). Shortwave Guide's advantage is update cadence (every 2 months vs every 13 months). On ads, in-app purchases and device support 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
Seismometer costs $1.99 and Shortwave Guide $8.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Seismometer ships an update every 13 months, Shortwave Guide every 2 months. The most recent releases landed on September 30, 2026 and September 24, 2026 respectively.
| Parameter | Seismometer | Shortwave Guide |
|---|---|---|
| Price | $1.99 — better | $8.99 |
| Rating | 3.3 (17 ratings) — better | — |
| Positive reviews | 64.7% of reviews — better | 20.0% of reviews |
| Number of ratings | 17 — better | — |
| Update frequency | Every 13 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 8.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 3 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | FFFF00 Agents AB | Vladyslav Haliuk |
Customer experience
Seismometer
Shortwave Guide
Bugs and requests
Seismometer
Reported bugs
4 issues- Crashes when trying to view recordings
- Unresponsive controls
- Incompatible with newer iPhone models
- Screen turns off unexpectedly
Requested features
5 requests- Pause and scroll back through recordings
- Save and email recorded data
- Adjustable sensitivity settings
- Richter scale or other measurement units
- Ability to record and review vibration history
Shortwave Guide
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Seismometer
No in-app purchases
Shortwave Guide
No in-app purchases
Questions
Is Seismometer free?
Is Shortwave Guide free?
Do Seismometer or Shortwave Guide have ads?
Which is updated more often, Seismometer or Shortwave Guide?
Other comparisons
