Sensor Toolkit vs Seismometer ∞
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sensor Toolkit
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Turn your phone into a powerful all-in-one toolkit. Measure, detect and analyze the world around you. Top tools included: - Drive & Motion • Speedometer Pro (custom acceleration, brake, g-force tracking and measurement & HUD) • Altimeter Pro (real-time altitude tracking) • Seismograph (vibration & movement analysis) - Measurement Tools • Bubble Level (horizontal & vertical alignment) • Smart Protractor (angle & tilt detection) • Light Meter (Lux intensity measurement) - Detection & Sensors • Metal Detector (magnetic field detection) • Sound Meter (decibel measurement & peaks) - Vision & Camera • Color Detective (HEX color recognition) from any picture • HD Magnifier (zoom & low-light assist) - System & Diagnostics • Battery Lab (health, voltage & temperature) • System Inspector (hardware & device info) - Utility Tools • Turbo Flashlight (strobe & SOS modes) • Pulse Tracker (camera-based heart rate)
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 in-app purchases: Seismometer ∞ at none against Sensor Toolkit's 4. Sensor Toolkit's advantage is device support (3 vs 1) and iOS requirement (15.6 vs 17.0). On price, update cadence and ads 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. Sensor Toolkit sells 4 one-off in-app purchases. Seismometer ∞ asks for nothing beyond the download.
Sensor Toolkit ships an update every 3 weeks, Seismometer ∞ every 2 weeks. The most recent releases landed on September 11, 2026 and September 12, 2026 respectively.
| Parameter | Sensor Toolkit | Seismometer ∞ |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks | Every 2 weeks — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 54 MB | 16 MB |
| Age rating | 12+ | 4+ |
| Developer | Dylan Calin | 辰巳家有限公司 |
In-app purchases
Sensor Toolkit
- Coffee Tip$1.00
- SensorKit Pro$1.99
- Pizza Tip$2.00
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- Diamond Tip$5.00
Seismometer ∞
No in-app purchases









