Just Sensors vs Sensor Toolkit
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Just Sensors
Explore your device's internal sensors with real-time visualizations. Monitor motion, location, audio, light, and device state data. Record and export sensor readings for analysis.
- Visualize 17+ device sensors
- Real-time data visualizations
- Bluetooth BLE scanner
- Record and export sensor data
- Device information and settings
- Live sensor previews
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Just Sensors. Nothing more, nothing less. Your iPhone is packed with sophisticated sensors — accelerometers, gyroscopes, barometers, Bluetooth radios, and more — all working silently in the background. Just Sensors brings them to life with beautiful, real-time visualizations. ▸ EXPLORE 17 SENSORS Motion Sensors • Accelerometer — Interactive bubble level showing forces in real-time • Gyroscope — Watch rotation rates with smooth visualizations • Magnetometer — A digital compass with magnetic field strength • Barometer — Track atmospheric pressure and relative altitude • Device Motion — Visualize pitch, roll, and yaw with an animated 3D cube • Pedometer — Count steps, distance walked, and floors climbed Location • GPS — View coordinates, altitude, speed, and course on a live map Audio & Light • Microphone — Visualize sound levels with a live waveform and dB meter • Light Meter — Measure ambient light in lux using your camera AR Sensors (Pro devices) • LiDAR Scanner — Measure distances and visualize depth data • Face Tracking — See 52 facial blend shapes detected in real-time Device State • Proximity — Detect when objects are near the screen • Battery — Monitor charge level, state, and thermal condition • Orientation — See portrait, landscape, face-up, face-down • Brightness — Track display brightness levels • NFC — Read NFC tags and view their data • Bluetooth Scanner — Discover nearby BLE devices ▸ BLUETOOTH SCANNER • Discover nearby BLE devices in real-time • See signal strength (RSSI) for each device • Identify manufacturers using official Bluetooth SIG data • View advertised services and UUIDs • Switch between feet and meters for distance estimates ▸ SETTINGS & DEVICE INFO • Switch between US Standard and Metric units • View all app permissions at a glance • See detailed device information — model, memory, storage, screen specs • Quick access to iOS Settings to manage permissions ▸ BEAUTIFUL VISUALIZATIONS Every sensor gets its own tailored visualization: • Interactive bubble levels for motion data • An animated 3D cube for device orientation • A smooth compass dial for magnetic heading • Elegant gauges for pressure, light, and brightness • Live waveforms for audio • Device list for Bluetooth with signal strength • Depth views for LiDAR • Face mesh overlays for TrueDepth ▸ LIVE PREVIEWS See sensor data at a glance — the home screen shows live mini-previews for every sensor, so you know what's happening before you tap. ▸ RECORD & EXPORT Capture sensor data over time and export it for analysis: • Record sessions from any sensor • Export to CSV for spreadsheets • Export to JSON for developers • Share directly to Files, email, or other apps • Review and manage past recordings ▸ DESIGNED FOR EVERYONE Whether you're a developer debugging motion controls, a student learning about physics, a researcher collecting data, or just curious about your device — Just Sensors makes it easy. • Clean, dark interface with vibrant accent colors • Haptic feedback for a tactile experience • Choose your preferred measurement units • Works offline — no internet required • Privacy-focused — your data stays on your device ▸ SMART SENSOR HANDLING Just Sensors gracefully handles hardware differences: • LiDAR features require iPhone 12 Pro or later • Face tracking requires devices with Face ID • Sensors that need permission show tap-to-activate previews • Unavailable features are clearly indicated No fluff. No bloat. Just Sensors.
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)
Screenshots
Verdict
The clearest difference is price: Sensor Toolkit at Free against Just Sensors's $0.99. Sensor Toolkit also leads on iOS requirement (15.6 vs 18.6). Just Sensors's advantage is in-app purchases (none vs 4) and ads (none vs shown). On 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
Sensor Toolkit is free to download; Just Sensors costs $0.99 up front. Sensor Toolkit sells 4 one-off in-app purchases. Just Sensors asks for nothing beyond the download.
Just Sensors ships an update every 6 days, Sensor Toolkit every 3 weeks. The most recent releases landed on September 21, 2026 and September 11, 2026 respectively.
| Parameter | Just Sensors | Sensor Toolkit |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 5.0 (3 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 6 days — better | Every 3 weeks |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 18.6 | 15.6 — better |
| Further details — not scored | ||
| Size | 9 MB | 54 MB |
| Age rating | 4+ | 12+ |
| Developer | Daniel Smith | Dylan Calin |
In-app purchases
Just Sensors
No 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





