Comparison

PHYWE measureAPP Cobra4 vs phyphox

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

Head to head
About

PHYWE measureAPP Cobra4

Transform your iPhone or iPad into a versatile measurement tool for science education. Explore over 50 parameters using wireless data logging systems or your device's internal sensors. Analyze, store, and share experiment data easily.

Highlights
  • Measure over 50 parameters
  • Use internal device sensors
  • Visualize data as graphs
  • Store and analyze measurements
  • Create project folders with media
  • Share data wirelessly
  • Export data to other apps
Read full description

Discover the PHYWE measureAPP Cobra4! Turn your iPhone or iPad into a measurement device: What is the noise level in the classroom, how do weather parameters change during a day, how much electric power can you generate by turning a generator? These and many more experiments can be performed by measuring more than 50 parameters with the Cobra4 wireless data logging systems (for more information please visit our website). In addition to the PHYWE sensors, the internal sensor of your iPhone or iPad can be used to measure acceleration right out of the box! E.g. during a rollercoaster ride. Turn natural science teaching into a fun experience – using your iPhone or iPad: - Connect Cobra4 wireless easily within the measureAPP Cobra4 - Visualize the measurement data as a graph, analog- or digital-display - Collect your data with the push of a button and store it on your device - Use simple to use tools to analyze your measurement - Take pictures, capture videos, write text, record audio files or save your current location to remember the important parameters of your experiment and combine them to a project-folder - Share measurements with your co-students directly to their iPhone, iPad or to measureLAB on your Mac or PC (requires common WiFi connection) - Share your data to other Apps like numbers, excel, or even send it with mail or WhatsApp to friends.

About

phyphox

Unlock your phone's sensors for scientific exploration. Conduct pre-built experiments or create your own using accelerometers, magnetometers, and more. Analyze and export data in various formats for further study.

Highlights
  • Pre-defined experiments
  • Data export (CSV, TSV, Excel)
  • Web-based remote control
  • Custom experiment editor
  • Access to phone sensors
  • Advanced analysis functions
Features
Read full description

Did you know that you are carrying a 3D magnetometer? That you can use your phone as a pendulum to measure earth's local gravitational acceleration? That you can turn your phone into a sonar? phyphox gives you access to the sensors of your phone either directly or through ready-to-play experiments which analyze your data and let you export raw data along with the results for further analysis. You can even define your own experiments on phyphox.org and share them with colleagues, students and friends. Selected Features: • A selection of pre-defined experiments. Just press play to start. • Export your data to a range of widely used formats • Remote-control your experiment through a web interface from any PC on the same network as your phone. No need to install anything on those PCs - all you need is a modern web browser. • Define your own experiments by selecting sensor inputs, defining analysis steps and creating views as an interface using our web-editor (http://phyphox.org/editor). The analysis consists of just adding two values or using advanced methods like Fourier transforms and crosscorrelation. We offer a whole toolbox of analysis functions. Sensors supported: • Accelerometer • Magnetometer • Gyroscope • Pressure • Microphone • Proximity • GPS • Camera • LiDAR/ToF *some sensors are not present on every phone. Export formats • CSV (Comma separated values) • TSV (Tab-separated values) • Excel (if you need other formats, please let us know) This app has been developed at the 2nd Institute of Physics A at the RWTH Aachen University.

Screenshots

PHYWE measureAPP Cobra44 screens
phyphox4 screens

Verdict

The call

The clearest difference is review sentiment: phyphox at 79% against PHYWE measureAPP Cobra4's 0%. phyphox also leads on rating (4.6 vs 1.0) and ratings volume (276 vs 1). On price, update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

phyphox holds the better App Store score, 4.6 against 1.0. That said, the two scores are not equally well evidenced: phyphox has 276 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of PHYWE measureAPP Cobra4's written reviews are positive against 79% of phyphox's.

UpkeepUpdate frequency

PHYWE measureAPP Cobra4 ships an update every 2 months, phyphox every 3 months. The most recent releases landed on October 10, 2026 and October 14, 2026 respectively.

Scorecard3 real differences · 7 level
PHYWE measureAPP Cobra4 versus phyphox: the parameters behind the verdict, then further details
ParameterPHYWE measureAPP Cobra4phyphox
PriceFreeFree
Rating1.0 (1 ratings)4.6 (276 ratings) — better
Positive reviews0.0% of reviews78.7% of reviews — better
Number of ratings1276 — better
Update frequencyEvery 2 months — betterEvery 3 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.012.0
Further details — not scored
Size72 MB19 MB
Age rating4+4+
DeveloperPHYWE Systeme GmbH & Co. KGRWTH Aachen University

Customer experience

PHYWE measureAPP Cobra4

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

phyphox

All ratings276 ratings
Positive89.5%
Neutral4.0%
Negative6.5%
Written reviews267 reviews
Positive78.7%
Neutral3.4%
Negative18.0%

Bugs and requests

PHYWE measureAPP Cobra4

Not enough reviews yet to summarise bugs or requests.

phyphox

Reported bugs

21 issues
  • App crashes on older devices
  • Barometer not working on iOS 17.4
  • Network error: Generic error
  • Sound measurement curve disappears
  • App crashes frequently
Show 16 more
  • Cannot be opened on iPhone 6
  • Light sensor not implemented
  • Recording stops when phone is locked or app is minimized
  • Green lines on screen and faded to black after using barometer sensor
  • WLAN not working after using the app
  • Pressure no longer displayed on iOS 17.5
  • Barometer not working on iOS 17.4
  • Latest version cannot be opened on iPhone 6
  • Sound chronometer reset button not working
  • iPad destroyed after update
  • App displays Russian language by default
  • Experiments not working on iPhone 7
  • Magnetometer not working after update on iPhone 5s
  • GPS shows 0 satellites with 6m accuracy
  • App claims iPhone 11 is comparable to a low-cost tablet
  • App crashes every time

Requested features

33 requests
  • Add infrasound detector
  • More units of measurement (G-force, PSI, feet)
  • NFC/RFID support
  • In-app bug report feature
  • Allow other sensors via USB-C
Show 28 more
  • Ability to plug in external sensors
  • Slo-mo recording with timestamps
  • Add attitude sensor (roll, pitch, yaw)
  • Integration with Apple Shortcuts
  • Ability to record audio/dB simultaneously with other sensors
  • Adjustable sampling frequency for all sensors
  • Dark mode option
  • Experiment editor integrated into the app
  • More documentation for the editor
  • Ability to form averages
  • Support for older iPhones (iPhone 6)
  • Add GPS satellite count display
  • Add speedometer functionality
  • Add Lux measurement using light sensor/camera
  • Ability to play recorded audio
  • Limit input for sound analyzers (dB/Hz range)
  • Wi-Fi and RF module access for EMF analysis
  • iWatch integration
  • Improve audio generator capability
  • Allow background/screen locked recording
  • Add light sensor functionality
  • Change units of measurement
  • Add more precise measurements for static cases
  • Add FFT and spectral generation for accelerometer
  • Support for older devices
  • Improve UI/UX for new users
  • Add support for more languages
  • Add a donate option

In-app purchases

None

PHYWE measureAPP Cobra4

No in-app purchases

None

phyphox

No in-app purchases

Questions

Is PHYWE measureAPP Cobra4 free?
PHYWE measureAPP Cobra4 is free to download, with no in-app purchases.
Is phyphox free?
phyphox is free to download, with no in-app purchases.
Which has better reviews, PHYWE measureAPP Cobra4 or phyphox?
phyphox is rated higher. PHYWE measureAPP Cobra4 averages 1.0 out of 5 from 1 ratings, while phyphox averages 4.6 from 276 ratings.
Do PHYWE measureAPP Cobra4 or phyphox have ads?
Neither PHYWE measureAPP Cobra4 nor phyphox shows ads.
Which is updated more often, PHYWE measureAPP Cobra4 or phyphox?
PHYWE measureAPP Cobra4 ships an update every 2 months, and phyphox every 3 months. Most recently, PHYWE measureAPP Cobra4 was updated on October 10, 2026 and phyphox on October 14, 2026.

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