Vernier Graphical Analysis GW vs TestNav
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Vernier Graphical Analysis GW
This application allows science students to collect, graph, and analyze data from various sensors. It supports multiple data-collection modes, offers advanced analysis tools, and enables data sharing for lab reports and further spreadsheet analysis.
- Multi-sensor data collection
- Time, event, and drop counting modes
- Graphing and table view
- Data analysis and statistics
- Curve fitting
- Data export (.CSV)
- Manual data entry
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Graphical Analysis™ GW is a tool for science students to collect, graph, and analyze data from Vernier Go Wireless® sensors. Sensor data-collection support: • Vernier Go Wireless® Temp and Go Wireless pH sensors • Vernier Go Wireless Heart Rate and Go Wireless Exercise Heart Rate monitors • Vernier LabQuest® sensors used with Go Wireless Link or LabQuest Stream interfaces • Basic support for some Vernier Go Direct® Sensors • NODE (by Variable Inc.) sensor support Additional experiment options: • Data Sharing via Wi-Fi connection to LabQuest 2 or Logger Pro® 3 • Built-in Sensors (accelerometers) • Manual Entry Note: Sensor data collection and Data Sharing require the purchase of hardware from Vernier Software & Technology. Built-in sensor and manual entry of data can be performed without a hardware purchase. For more information on Data Sharing, visit http://www.vernier.com/css Key Features - Data Collection • Multi-sensor data-collection support • Time Based, Event Based, and Drop Counting data-collection modes • Configurable data-collection rate and duration for time-based data collection • Sensor calibrations • Option to zero and reverse sensor readings • Graph match feature for use with motion detectors • Manual entry of data from keyboard and clipboard Key Features - Data Analysis • Display one, two, or three graphs simultaneously • View data in a table or show a graph and table side-by-side • Draw Predictions on a graph to uncover misconceptions • Examine, interpolate/extrapolate, and select data • Apply Statistics calculations to find mean, min, max, and standard deviation • Perform curve fits, including linear, quadratic, natural exponent, and more • Add calculated columns based on existing data to linearize data or investigate related concepts • Pinch to scale graphs Key Features - Collaboration and Sharing • Add graph titles • Export graphs and data for printing and inclusion in lab reports • Export data in .CSV format for analysis of data in spreadsheet software such as Excel®, Google Sheets™, and Numbers® Vernier Software & Technology has over 35 years of experience in providing effective learning resources for understanding experimental data in science and math classrooms. Graphical Analysis GW is a part of the extensive system of sensors, interfaces, and data-collection software from Vernier for science and STEM education.
TestNav
This application provides a secure and reliable platform for delivering educational tests online. It ensures test items are presented consistently across devices.
- Secure test delivery
- Reliable online platform
- Consistent test item presentation
- iOS device compatibility
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TestNav is Pearson's online test delivery platform. It enables test items to be delivered online securely and reliably in a consistent manner. The TestNav for iOS app allows TestNav to run on iOS devices.
Screenshots
Verdict
The clearest difference is rating: Vernier Graphical Analysis GW at 2.4 against TestNav's 1.6. Vernier Graphical Analysis GW also leads on update cadence (every 3 months vs every 8 months) and device support (3 vs 1). TestNav's advantage is monetization model (free vs free with in-app purchases). On price, review sentiment, ratings volume and ads 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Vernier Graphical Analysis GW holds the better App Store score, 2.4 against 1.6. Both are backed by a comparable volume of ratings — 158 and 104 respectively. Written reviews point the same way: 27% of Vernier Graphical Analysis GW's written reviews are positive against 24% of TestNav's.
Vernier Graphical Analysis GW ships an update every 3 months, TestNav every 8 months. Both last shipped on November 1, 2026.
| Parameter | Vernier Graphical Analysis GW | TestNav |
|---|---|---|
| Price | Free | Free |
| Rating | 2.4 (158 ratings) — better | 1.6 (104 ratings) |
| Positive reviews | 26.7% of reviews — better | 23.6% of reviews |
| Number of ratings | 158 — better | 104 |
| Update frequency | Every 3 months — better | Every 8 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod — better | iPad |
| Requires iOS | 11.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 20 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Vernier Software & Technology | Pearson |
Customer experience
Vernier Graphical Analysis GW
TestNav
Bugs and requests
Vernier Graphical Analysis GW
Not enough reviews yet to summarise bugs or requests.
TestNav
Reported bugs
6 issues- Open response boxes never work properly
- Drag and drop not working
- Permission errors for speech, mic, etc.
- App crashes all the time
- App doesn't work
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- App needs update but cannot update
Requested features
10 requests- Way to lower brightness
- Actual Dark Mode
- Allow access to Accessibility Shortcuts menu during testing
- Enable/disable inverted colors during testing
- Enable zoom during testing
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- Enable VoiceOver during testing
- Add dancing GIFs of Nick Young
- Add mini games with golf balls and levels
- Add Flappy golf extreme
- Add cross map tomahawks
In-app purchases
Vernier Graphical Analysis GW
No in-app purchases
TestNav
No in-app purchases
Questions
Is Vernier Graphical Analysis GW free?
Is TestNav free?
Which has better reviews, Vernier Graphical Analysis GW or TestNav?
Do Vernier Graphical Analysis GW or TestNav have ads?
Which is updated more often, Vernier Graphical Analysis GW or TestNav?
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