Comparison

phyphox vs Amino Acid Quiz

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

Head to head
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.

About

Amino Acid Quiz

Test and enhance your understanding of the 20 standard amino acids with customizable quizzes. Explore topics like names, structures, codes, codons, and side chain classes. Study all topics for free, with an optional in-app purchase to remove ads.

Highlights
  • Customizable quizzes
  • 20 standard amino acids
  • Amino acid names
  • Structural formulas
  • 1-Letter and 3-Letter codes
  • Codons
  • Side chain classes
Features
Read full description

Test and improve your knowledge of the 20 standard amino acids using this app's customizable quizzes. Multiple choice quizzes cover the following 6 topics: - Amino acid names - Structural formulas - 1-Letter codes - 3-Letter codes - Codons - Side chain classes All topics can be studied for free using this app. An in-app purchase is available to remove the banner ad. The game language can easily be changed in-app to English, French, Spanish, German, Simplified Chinese, Traditional Chinese, Japanese, Korean, Italian, Indonesian, Russian, Portuguese, Swedish, Norwegian, and Dutch.

Screenshots

phyphox4 screens
Amino Acid Quiz4 screens

Verdict

The call

The clearest difference is in-app purchases: phyphox at none against Amino Acid Quiz's 1. phyphox also leads on ads (none vs shown) and update cadence (every 3 months vs every 13 months). Amino Acid Quiz's advantage is rating (4.9 vs 4.6) and review sentiment (90% vs 79%). On price, 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. Amino Acid Quiz sells 1 one-off in-app purchase. phyphox asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Amino Acid Quiz holds the better App Store score, 4.9 against 4.6. Both are backed by a comparable volume of ratings — 282 and 1K respectively. Written reviews point the same way: 79% of phyphox's written reviews are positive against 90% of Amino Acid Quiz's.

UpkeepUpdate frequency

phyphox ships an update every 3 months, Amino Acid Quiz every 13 months. The most recent releases landed on November 7, 2026 and November 6, 2026 respectively.

Scorecard7 real differences · 3 level
phyphox versus Amino Acid Quiz: the parameters behind the verdict, then further details
ParameterphyphoxAmino Acid Quiz
PriceFreeFree
Rating4.6 (282 ratings)4.9 (1K ratings) — better
Positive reviews78.7% of reviews90.0% of reviews — better
Number of ratings2821K — better
Update frequencyEvery 3 months — betterEvery 13 months
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better13.0
Further details — not scored
Size19 MB100 MB
Age rating4+4+
DeveloperRWTH Aachen UniversityAtlas Educational Software

Customer experience

phyphox

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

Amino Acid Quiz

All ratings949 ratings
Positive96.9%
Neutral2.0%
Negative1.1%
Written reviews201 reviews
Positive90.0%
Neutral6.0%
Negative4.0%

User reviews

phyphox

From 282 App Store ratings

What we love

  • 💡 Access to phone sensors
  • 🔬 Useful for physics experiments
  • 📊 Data logging and export
  • 🆓 Free and no ads
  • 🤔 Sparks curiosity

Room to improve

  • 🐛 Bugs and crashes
  • 📉 Inconsistent performance
  • 🔒 App locks/minimizes recording
  • ❓ Units not always clear
  • ⚠️ Potential for device damage

Amino Acid Quiz

From 1K App Store ratings

What we love

  • 🚀 Efficient for learning amino acids
  • 👍 Clean and user-friendly interface
  • 🚀 Helps memorize amino acids quickly
  • 👍 Great for MCAT/biochemistry prep
  • 👍 Customizable quiz options

Room to improve

  • 🐛 Incorrect classification of cysteine as non-polar
  • 🔍 Missing information on amino acid properties (e.g., pKa, hydrophobicity)

Bugs and 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

Amino Acid Quiz

Reported bugs

1 issue
  • Arginine (Arg) incorrectly displayed as tyrosine (Tyr) in quiz results

Requested features

4 requests
  • Add drawing/structure input mode
  • Include 21st amino acid (selenocysteine)
  • Add pH-dependent structure visualization
  • Implement a continuous/infinite quiz mode

In-app purchases

None

phyphox

No in-app purchases

1 purchases

Amino Acid Quiz

One-time1
  • Remove Ads$0.99

Questions

Is phyphox free?
phyphox is free to download, with no in-app purchases.
Is Amino Acid Quiz free?
Amino Acid Quiz is free to download, with in-app purchases available.
Which has better reviews, phyphox or Amino Acid Quiz?
Amino Acid Quiz is rated higher. phyphox averages 4.6 out of 5 from 282 ratings, while Amino Acid Quiz averages 4.9 from 1K ratings.
Do phyphox or Amino Acid Quiz have ads?
Amino Acid Quiz shows ads; phyphox does not.
Which is updated more often, phyphox or Amino Acid Quiz?
phyphox ships an update every 3 months, and Amino Acid Quiz every 13 months. Most recently, phyphox was updated on November 7, 2026 and Amino Acid Quiz on November 6, 2026.

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