Seismometer vs Seismometer ∞
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.
Seismometer ∞
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Seismometer ∞ — earthquake detector, vibration meter, and seismograph in your pocket. Turn your iPhone into a precision seismometer and vibration meter. Detect tremors, monitor seismic waves, and visualize ground motion in real time. • Real-time seismograph visualization with precision charts • Track X, Y, Z axis vibration readings with detailed graphs • Monitor earthquake tremors and ground movement • Professional-grade sensitivity for reliable measurements • Clean, intuitive interface for easy data interpretation Perfect for earthquake awareness, physics experiments, scientific research, and education. Whether you're a researcher, student, or curious explorer, discover the hidden world of seismic activity. Privacy Policy: https://www.icloud.com/pages/0bcX7C5KVMC35FbMWk-FNfjWg Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is price: Seismometer ∞ at Free against Seismometer's $1.99. Seismometer ∞ also leads on update cadence (every 2 weeks vs every 13 months). Seismometer's advantage is ads (none vs shown) and iOS requirement (8.0 vs 17.0). On 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 ∞ is free to download; Seismometer costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Seismometer ships an update every 13 months, Seismometer ∞ every 2 weeks. The most recent releases landed on October 20, 2026 and October 14, 2026 respectively.
| Parameter | Seismometer | Seismometer ∞ |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 3.3 (17 ratings) — better | — |
| Positive reviews | 64.7% of reviews | — |
| Number of ratings | 17 — better | — |
| Update frequency | Every 13 months | Every 2 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 8.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 3 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | FFFF00 Agents AB | 辰巳家有限公司 |
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
Seismometer ∞
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Seismometer
No in-app purchases
Seismometer ∞
No in-app purchases
Questions
Is Seismometer free?
Is Seismometer ∞ free?
Do Seismometer or Seismometer ∞ have ads?
Which is updated more often, Seismometer or Seismometer ∞?
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