Comparison

Sensor MoJo vs Just Sensors

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Sensor MoJo

Features
Read full description

Sensor MoJo sensors are AA-powered WiFi-connected sensors that can track Temperature, Humidity, Orientation and Vibration. Receive text/email alarms for any sensor reading, alarms are checked every minute. Two AA's enable 3-18 month battery lifetime. Note: Requires Hardware, available at http://sensormojo.com

About

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.

Highlights
  • Visualize 17+ device sensors
  • Real-time data visualizations
  • Bluetooth BLE scanner
  • Record and export sensor data
  • Device information and settings
  • Live sensor previews
Features
Read full description

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

Sensor MoJo3 screens
Just Sensors4 screens

Verdict

The call

The clearest difference is price: Sensor MoJo at Free against Just Sensors's $0.99. Sensor MoJo also leads on iOS requirement (11.0 vs 18.6). Just Sensors's advantage is update cadence (every 6 days vs every 2 months). On ads, in-app purchases and 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

CostPrice · In-app purchases · Ads · Monetization

Sensor MoJo is free to download; Just Sensors costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Sensor MoJo ships an update every 2 months, Just Sensors every 6 days. The most recent releases landed on September 8, 2026 and September 21, 2026 respectively.

Scorecard3 real differences · 7 level
Sensor MoJo versus Just Sensors: the parameters behind the verdict, then further details
ParameterSensor MoJoJust Sensors
PriceFree — better$0.99
Rating—5.0 (3 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—3 — better
Update frequencyEvery 2 monthsEvery 6 days — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS11.0 — better18.6
Further details — not scored
Size35 MB9 MB
Age rating4+4+
DeveloperMoJo LabsDaniel Smith

In-app purchases

None

Sensor MoJo

No in-app purchases

None

Just Sensors

No in-app purchases

Questions

Is Sensor MoJo free?
Sensor MoJo is free to download, with no in-app purchases.
Is Just Sensors free?
Just Sensors costs $0.99, with no in-app purchases.
Do Sensor MoJo or Just Sensors have ads?
Neither Sensor MoJo nor Just Sensors shows ads.
Which is updated more often, Sensor MoJo or Just Sensors?
Sensor MoJo ships an update every 2 months, and Just Sensors every 6 days. Most recently, Sensor MoJo was updated on September 8, 2026 and Just Sensors on September 21, 2026.

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