Fault vs Sensor Toolkit
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.
Sensor Toolkit
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Sensor Toolkit turns your iPhone into a clean, practical set of everyday measurement tools. Use it when you need a level, compass, vibration meter, magnetometer, heading reader, sound meter, ruler, protractor, timer, or metronome without switching between separate apps. Built for quick checks, field work, DIY tasks, practice rooms, and daily utility, Sensor Toolkit keeps each tool focused on the measurement in front of you. Key features: • 10 tools in one app Level, Compass, Vibration, Magnetometer, Heading, Sound Meter, Ruler, Protractor, Timer, and Metronome. • Real-time sensor readings Clear visual feedback helps you read tilt, direction, sound level, vibration, magnetic field strength, angles, time, and tempo at a glance. • No ads while measuring Measurement screens stay clean, focused, and distraction-free. • Sound and vibration logs View live measurement changes over time and save chart images when you need a record. • Practical instrument-style design Dark, high-contrast screens make readings easy to check quickly. • Privacy-conscious permissions Permissions are requested only when a tool needs them. Microphone audio is used for sound level measurement and is not saved by the app. Sensor Toolkit is designed for practical reference measurements. Results depend on your device sensors, calibration, and environment, so it is not a replacement for certified professional measuring equipment.
Screenshots
Verdict
The clearest difference is device support: Fault at 2 against Sensor Toolkit's —. Sensor Toolkit's advantage is iOS requirement (15.0 vs 26.2). On price and in-app purchases 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 | Sensor Toolkit |
|---|---|---|
| Price | Free | Free |
| Ads | No | — |
| In-app purchases | No | No |
| Devices | iPhone, iPad — better | — |
| Requires iOS | 26.2 | 15.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 33 MB |
| Age rating | 4+ | 4+ |
| Developer | Kshitij Jhangra | Hangik Lee |
In-app purchases
Fault
No in-app purchases
Sensor Toolkit
No in-app purchases









