Tornado Radar vs GT Graph
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Tornado Radar
Discover campus events and ways to get involved. Filter by organization or activity, and add events to your personal calendar to ensure you don't miss out on university happenings.
- Discover campus events
- Filter by organization
- Filter by activity
- Add events to calendar
- Increase student engagement
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Use the Concordia University - Texas Events app to find out what events are happening and find out how you can get involved on campus! • Sort by campus organizations hosting events • Find events tagged with your favorite activities • Add events to your calendar so you don’t miss out! Powered by Presence. Presence provides a web and mobile platform to universities and colleges to help increase student engagement, assess involvement, allocate funding efficiently, and improve retention through simplifying and digitizing processes, collecting, structuring, and analyzing involvement data, and provides tools to help reach and engage more students.
GT Graph
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GT Graph transforms your device into a powerful mathematical visualization tool. Plot equations, explore calculus concepts, and bring mathematics to life with stunning interactive graphs. PLOT ANY EQUATION - Cartesian functions - Polar curves - Parametric equations - Implicit equations - Inequalities with shaded regions INTUITIVE INPUT Type equations naturally with implicit multiplication support. Write 2x instead of 2*x, or 2sin(x) instead of 2*sin(x). GT Graph understands mathematical notation the way you write it. COMPREHENSIVE FUNCTION LIBRARY - Trigonometric: sin, cos, tan, sec, csc, cot - Inverse trigonometric: asin, acos, atan - Hyperbolic: sinh, cosh, tanh - Exponential and logarithmic: exp, ln, log, log2 - Power functions: sqrt, cbrt, abs - Constants: pi, e, phi (golden ratio) MULTIPLE GRID TYPES - Standard Cartesian grid - Trigonometric grid with pi-labeled axes - Polar coordinate grid with radial lines - Logarithmic scale grid CALCULUS TOOLS - Calculate derivatives at any point - Compute definite integrals with visual shading - Find zeros (roots) of functions - Locate local minima and maxima - Generate value tables INTERACTIVE EXPLORATION - Pinch to zoom, drag to pan - Tap to show tangent lines - Crosshair cursor displays coordinates - Plot multiple equations simultaneously - Color-coded graphs for easy identification SAVE AND SHARE - Save your work as .gtgraph files - Export and share with colleagues - Equation history saves your last 25 entries - Settings persist between sessions Perfect for: - Students learning algebra, trigonometry, and calculus - Teachers creating visual demonstrations - Engineers and scientists visualizing data - Anyone curious about mathematical beauty GT Graph combines the power of professional graphing software with the elegance of modern design. Start plotting today!
Screenshots
Verdict
The clearest difference is in-app purchases: Tornado Radar at none against GT Graph's 1. Tornado Radar also leads on iOS requirement (11.0 vs 18.0). GT Graph's advantage is update cadence (every 8 days vs every 5 months). On price, ads 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
Both are free to download. GT Graph sells 1 one-off in-app purchase. Tornado Radar asks for nothing beyond the download.
Tornado Radar ships an update every 5 months, GT Graph every 8 days. The most recent releases landed on October 12, 2026 and October 8, 2026 respectively.
| Parameter | Tornado Radar | GT Graph |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (4 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 5 months | Every 8 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, Mac — better |
| Requires iOS | 11.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 9 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Check I'm Here, LLC | Gennaro Eduardo Tangari |
In-app purchases
Tornado Radar
No in-app purchases
GT Graph
- GT Graph In-App Purchase$0.99
Questions
Is Tornado Radar free?
Is GT Graph free?
Do Tornado Radar or GT Graph have ads?
Which is updated more often, Tornado Radar or GT Graph?
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