Fault vs Seismometer ∞
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Fault
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Fault is a high-precision seismic activity visualiser that transforms your device into a real-time motion analysis tool. Built on advanced sensor filtering and a custom high-performance waveform engine, Fault helps you observe subtle tremors, vibrations, and shifts in your environment—instantly and with remarkable clarity. Designed for enthusiasts, students, researchers, engineers, and anyone curious about the motion around them, Fault brings professional-grade motion insight to your pocket without requiring any external hardware. Real-Time Seismograph Fault captures live acceleration data from your device’s built-in sensors and displays it as a dynamic 3-axis waveform. Each axis is uniquely color-coded, providing a clear and intuitive visualization of motion patterns—whether you're measuring vehicle vibrations, structural resonance, or everyday movement. Advanced Signal Processing Raw sensor data is often noisy and difficult to interpret. Fault applies intelligent filtering techniques including: High-pass filtering to reduce gravity influence Low-pass smoothing to clarify subtle motion Dynamic gain scaling for enhanced sensitivity The result is clean, stable, and meaningful motion readings. Instant Shake & Event Detection Fault detects unusual motion in real time and highlights: Peak acceleration Event duration Motion intensity From sudden jolts to continuous vibration, every event is clearly broken down as it happens. Customisable Experience Fine-tune how motion is captured and displayed with adjustable: Sensitivity and gain Filter strength Smoothing window Axis visibility Sampling rate Frame rate Every control gives you deeper precision. Elegant, Minimal Design Clean, distraction-free interface Simple menu for quick navigation Fast launch splash screen Smooth high-frame-rate rendering Lightweight, responsive, and crafted for both casual users and professionals. Powered by a Modern Sensor Engine Fault uses a custom rendering pipeline with circular buffering to ensure exceptional performance and accuracy—even during fast movements or long monitoring sessions. Who Is Fault For? Earth science students Structural engineers Vibration analysts Hardware testers DIY researchers Curious explorers From detecting table vibrations to monitoring building stability during strong winds, the possibilities are endlessly fascinating.
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 ads: Fault at none against Seismometer ∞'s shown. Seismometer ∞'s advantage is iOS requirement (17.0 vs 26.2). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Fault | Seismometer ∞ |
|---|---|---|
| Price | Free | Free |
| Update frequency | — | Every 2 weeks |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 26.2 | 17.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | Kshitij Jhangra | 辰巳家有限公司 |
In-app purchases
Fault
No in-app purchases
Seismometer ∞
No in-app purchases








