Comparison

OWee Delft vs Sensor Logger

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

Head to head
About

OWee Delft

Features
Read full description

Use this app as your ultimate guide to the OntvangstWeek (OWee)! Stay on top of your personal schedule and access all the essential details about the OWee. Discover everything you need to know about Delft—its vibrant student life, the campus, your studies, and the many student organizations and associations.

About

Sensor Logger

This app collects and displays data from various device sensors, including motion, GPS, and audio. It offers background recording, interactive plots, and multiple export formats. Advanced features allow for data streaming, systematic data collection from other users, and creating shareable data-driven dashboards.

Highlights
  • One-tap logging
  • Background recording
  • Interactive plot visualization
  • Data streaming (HTTP/MQTT)
  • CSV, JSON, Excel, KML exports
  • Create and share data dashboards
  • Systematic data collection studies
Features
Read full description

Sensor Logger collects, records and displays data from a range of sensors on iPhone, Apple Watch, iPad and AirPods — including accelerometer, gyroscope, GPS, audio, camera and Bluetooth devices. You can log device properties such as screen brightness, battery and network state. Select and preview desired sensors in a few taps. A single tap initiates the recording function, which works even when the app is in the background. View and manage recordings within the app via interactive plots. The app supports many export formats, including Zipped CSV, JSON, Excel, KML and more. For advanced use cases, stream data via HTTP or MQTT, resample measurements from multiple sensors, create Studies to collect data from other users systematically and write custom automation rules based on sensor, time and location. Once you have collected your data, you can create Stories — data-driven dashboard with your recordings, hosted online for effortless sharing. Sensor Logger is designed for researchers, educators, and anyone interested in collecting or monitoring sensors on their smartphone. It serves as the ultimate toolbox for exploring various fields, including physics, science, technology, engineering, and mathematics (STEM). - One-tap logging - Background recording - Recordings on interactive plots - Stream data via HTTP & MQTT - Intelligent, custom rule engine - Zipped CSV, JSON, Excel, KML & SQLite exports - Resample and aggregate measurements - Enable & disable specific sensors - Scan and log nearby Bluetooth devices - Add timestamp-synchronised annotations during recording - Adjust sampling frequency for sensor groups - Custom recording workflow - Raw and calibrated measurements available - Live plots and readings for sensors - Organise, sort and filter recordings - Control & track recording session from Watch - Bulk export & delete recordings - Resources to help you analyse your data - Data stays on-device and private - Create and share dashboard-style, data-driven Stories using your recordings, hosted online. Studies & Sensor Logger Cloud Create Studies to collect data from other Sensor Logger users efficiently. When activated, Studies use the investigator's specified sensor configuration for consistent data collection. Participants can upload their recordings to a secure cloud and join, pause, or switch Studies anytime. Studies include clear data usage descriptions, privacy statements, and contact details to ensure privacy compliance. Customize Study size, duration, sensor configuration, and export formats. Optional Paid Features (Plus, Pro & Ultimate) - No limitations on the number of stored recordings - Additional export formats - Combined CSV export - Customise recording workflow - Advanced sensor configurations - Custom naming templates - Theme and icon customizations - Unlimited Bluetooth beacons and no limit on the minimum RSSI - Create larger Studies with more participants - More allocated storage on Sensor Logger Cloud - Email support - Advanced study customization Supported Measurements - Device Acceleration (Accelerometer; Raw & Calibrated) - Gravity Vector (Accelerometer) - Device Rotation Rate (Gyro) - Device Orientation (Gyro Raw & Calibrated) - Magnetic Field (Magnetometer Raw & Calibrated) - Compass - Barometric Altitude (Barometer) - GPS Coordinate, Altitude, Speed & Heading - Audio (Microphone) - Loudness (Microphone) - Images (Front/Back) - Video (Front/Back) - Depth - Pedometer - Activity - Heart Rate (Watch) - Wrist Motion (Watch) - Location & Barometer (Watch) - Annotations (Timestamp and text) - Device battery level and state - Device screen brightness level - Nearby Bluetooth beacons (advertised data) - Headphone Motion (AirPods) - Network Heart rate logging requires integration with the Health app on the watch. Permission to access the heart rate from HealthKit on the watch is needed for the app to log the measurements. Terms of Service: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

OWee Delft4 screens
Sensor Logger4 screens

Verdict

The call

The clearest difference is in-app purchases: OWee Delft at none against Sensor Logger's 6. Sensor Logger's advantage is update cadence (weekly vs monthly). On price, ads, device support and iOS requirement 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

Both are free to download. Sensor Logger sells 6 in-app purchases, starting at $4.99 per month. OWee Delft asks for nothing beyond the download.

UpkeepUpdate frequency

OWee Delft ships an update monthly, Sensor Logger weekly. The most recent releases landed on September 8, 2026 and September 23, 2026 respectively.

Scorecard2 real differences · 8 level
OWee Delft versus Sensor Logger: the parameters behind the verdict, then further details
ParameterOWee DelftSensor Logger
PriceFreeFree
Rating—4.8 (111 ratings) — better
Positive reviews—44.4% of reviews
Number of ratings—111 — better
Update frequencyMonthlyWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPadiPhone, iPad, Apple Watch — better
Requires iOS16.416.4
Further details — not scored
Size82 MB81 MB
Age rating12+4+
DeveloperDelft University of TechnologyChoi Tsz Hei

In-app purchases

None

OWee Delft

No in-app purchases

6 purchases

Sensor Logger

Subscriptions6
  • Plus Monthly$4.991 Month
  • Pro Monthly$9.991 Month
  • Ultimate Monthly$24.991 Month
Show 3 more
  • Plus Yearly$49.991 Year
  • Pro Yearly$99.991 Year
  • Ultimate Yearly$249.991 Year

Questions

Is OWee Delft free?
OWee Delft is free to download, with no in-app purchases.
Is Sensor Logger free?
Sensor Logger is free to download, with in-app purchases available.
Do OWee Delft or Sensor Logger have ads?
Neither OWee Delft nor Sensor Logger shows ads.
Which is updated more often, OWee Delft or Sensor Logger?
OWee Delft ships an update monthly, and Sensor Logger weekly. Most recently, OWee Delft was updated on September 8, 2026 and Sensor Logger on September 23, 2026.

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