Sensor Logs vs Just Sensors
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sensor Logs
Stream real-time sensor data from your iOS device to a local server using socket.io or HTTP requests. This utility app is designed for developers to monitor their surroundings with minimal interface and adjustable streaming periods.
- Stream accelerometer, gyroscope, magnetometer data
- Adjustable streaming period
- HTTP and socket.io protocols
- Minimal user interface
- Developer-focused utility
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Sensor Logger is the easiest way to stream sensor data from your iOS device straight to a locally hosted server in the form of socket.io or HTTP requests. With a stripped down, minimal interface, Sensor Logger provides exactly what you need and nothing that you don't. - Track your device's accelerometer, gyroscope, and magnetometer. - Adjustable streaming period with a maximum speed of roughly 3 polls/second. - Two protocols to use, HTTP or socket.io (WebSocket library) - Sample node.js server with JSON and CSV exporting is available from the developer's website, www.joecrozier.ca/sensor-logger Please note - this app is meant for developers who wish to use their iOS device to monitor the world around them. If you're not comfortable writing code it's recommended you use a different application for this task.
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.
Screenshots
Verdict
Sensor Logs and Just Sensors both sit at 5.0 stars, but that hides the real split: 100% of Just Sensors's written reviews are positive against 0% of Sensor Logs's. Just Sensors also leads on monetization model (free vs paid) and update cadence (every 6 days vs every 88 months). Sensor Logs's advantage is iOS requirement (16.0 vs 18.6). On price, rating, ads 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
Sensor Logs costs $0.99 and Just Sensors $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for Sensor Logs against 5.0 for Just Sensors. Both are backed by a comparable volume of ratings — 1 and 3 respectively. Written reviews are what separate them: 0% of Sensor Logs's written reviews are positive against 100% of Just Sensors's.
Sensor Logs ships an update every 88 months, Just Sensors every 6 days. Both last shipped on September 21, 2026.
| Parameter | Sensor Logs | Just Sensors |
|---|---|---|
| Price | $0.99 | $0.99 |
| Rating | 5.0 (1 ratings) | 5.0 (3 ratings) |
| Positive reviews | 0.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 1 | 3 — better |
| Update frequency | Every 88 months | Every 6 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 16.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 3 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Joe Crozier Software | Daniel Smith |
Customer experience
Sensor Logs
Just Sensors
In-app purchases
Sensor Logs
No in-app purchases
Just Sensors
No in-app purchases





