Seismometer vs Earthquakes
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.
Earthquakes
This app displays earthquake data on a map and provides customizable notifications for seismic events. Users can sort earthquakes by magnitude, distance, and time, and set limits for notifications and map displays based on size.
- Interactive earthquake map
- Customizable earthquake notifications
- Sort earthquakes by magnitude
- Sort earthquakes by distance
- Sort earthquakes by time
- Notification limits by size
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• Earthquake map. • Earthquake notifications. • Sort earthquakes by magnitude. • Sort earthquakes by distance. • Sort earthquakes by time. • Limit earthquake notifications by size. • Limit earthquakes show on map by size. Continued use of GPS running in the background can dramatically decrease battery life. https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is rating: Earthquakes at 3.8 against Seismometer's 3.3. Earthquakes also leads on update cadence (every 3 days vs every 13 months) and price ($0.99 vs $1.99). Seismometer's advantage is in-app purchases (none vs 1) and iOS requirement (8.0 vs 15.0). On review sentiment, ratings volume, ads 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 Earthquakes $0.99 up front. Earthquakes sells 1 in-app purchase, starting at $3.99 per year. Seismometer asks for nothing beyond the download.
Earthquakes holds the better App Store score, 3.8 against 3.3. Both are backed by a comparable volume of ratings — 17 and 10 respectively. Written reviews point the same way: 65% of Seismometer's written reviews are positive against 67% of Earthquakes's.
Seismometer ships an update every 13 months, Earthquakes every 3 days. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.
| Parameter | Seismometer | Earthquakes |
|---|---|---|
| Price | $1.99 | $0.99 — better |
| Rating | 3.3 (17 ratings) | 3.8 (10 ratings) — better |
| Positive reviews | 64.7% of reviews | 66.7% of reviews — better |
| Number of ratings | 17 — better | 10 |
| Update frequency | Every 13 months | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPod | iPhone, iPod, Apple Watch — better |
| Requires iOS | 8.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 3 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | FFFF00 Agents AB | Yet to be Named Enterprise |
Customer experience
Seismometer
Earthquakes
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
Earthquakes
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Seismometer
No in-app purchases
Earthquakes
- Premium Notifications1 Month trial$3.991 Year
Questions
Is Seismometer free?
Is Earthquakes free?
Which has better reviews, Seismometer or Earthquakes?
Do Seismometer or Earthquakes have ads?
Which is updated more often, Seismometer or Earthquakes?
Other comparisons
