Turn your iPhone into a scientific instrument! Access 24+ sensors with beautiful visualizations, data recording, and export. Discover what your device can really do.
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.
This is an incredible utility that does so many different functions and provides a wealth of information. Almost creepy how much information is out there but this utility can alert you to vulnerabilities in addition to its myriad of utilitarian functions. Get it while it’s free! You’ve paid for apps that do much less.
Developer Response
Thanks! It started as a way for me to test some ideas and I thought others might enjoy it as well.
Pretty cool
mandee2
I got this for the pedometer since it’s free because sometimes I forget to charge my watch and it seems pretty accurate.The other functions are really cool too though. My kid and I were having fun with the face tracker on it.And it just has a bunch of cool little functions I’ll use later like the lidar and probably coordinates.
Developer Response
Thanks for downloading!
- Adds Stud Finder tool
- Bug fixes
Version 1.7.1
The developer, Daniel Smith, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Seller
Daniel Smith
Size
9.4 MB
Category
Utilities
Compatibility
Requires iOS 18.6 or later.
iPhone Requires iOS 18.6 or later.
iPad Requires iPadOS 18.6 or later.
Mac Requires macOS 15.6 or later and a Mac with Apple M1 chip or later.