Guess the Graph vs Touch Trigonometry
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Guess the Graph
This educational app helps students understand mathematical functions by analyzing and reconstructing graphs. It offers interactive challenges with real-time visual feedback, supporting various difficulty levels and function types.
- Interactive graph analysis
- Function reconstruction challenges
- Real-time graph updates
- Multiple difficulty levels
- Custom math input interface
- Built-in cheat sheet
Read full descriptionHide full description
Graph Detective is an interactive educational app that helps students build intuition about mathematical functions by analyzing graphs instead of memorizing formulas. Players are shown a graph without its equation and are challenged to reconstruct the underlying function by adjusting parameters or entering expressions. As users experiment, the graph updates in real time, encouraging exploration and hypothesis testing. The app supports multiple difficulty levels: Easy: Explore quadratic and linear functions using sliders Medium: Enter full expressions including trigonometric, exponential, and logarithmic functions Hard: Analyze composite and piecewise functions with minimal hints Graph Detective features a custom math input interface optimized for learning, optional hardware keyboard support, and a built-in cheat sheet that explains common graph patterns and transformations.
Touch Trigonometry
Read full descriptionHide full description
Finally understand trigonometry. Touch Trigonometry is the most intuitive way to learn the trigonometric functions. Instead of memorizing formulas, you'll see how sin, cos, tan, and the rest actually work—by touching and exploring a live unit circle and graph. Drag your finger around the circle and watch trig functions respond in real time. You'll be amazed at how quickly the "true meaning" of trigonometry becomes clear. Watch the graph on the right trace their values. In seconds, concepts that confused you for years will suddenly click. This app is great for students struggling with trigonometry or anyone looking for a refresher. HOW IT WORKS On the left: an interactive unit circle. Touch anywhere and drag to change the angle θ (theta). A triangle forms showing the relationships between the angle and the trig values. On the right: live graphs of all six trig functions. As you move the angle, dots trace along each curve showing the current value. Touch the graph side to control the angle from there too. It's bidirectional, immediate, and intuitive. No tutorial needed—just touch and explore. Users have told us that they never understood *why* the trig functions existed—until they used this app. From students to the math curious, Touch Trigonometry offers a truly intuitive way to understand one of the trickiest parts of geometry—at your fingertips! FEATURES • Interactive unit circle with touch control • All 6 trig functions: sin, cos, tan, sec, csc, cot • Live function graphs with real-time value tracking • Bidirectional control (circle or graph) • Right triangle overlay showing opposite/adjacent/hypotenuse • Reference angle markers (30°, 45°, 60°, 90°, etc.) • Switch between degrees and radians • Snap-to-reference-angles mode • Pinch to zoom the graph • Colorblind-friendly color palette • Clean dark theme, no distractions • No ads, no account required WHO IT'S FOR • High school & college students learning trig • Teachers demonstrating concepts in class • Engineers & scientists refreshing fundamentals • Anyone who was told to "just memorize SOHCAHTOA" • Visual learners who need to see it to get it FREE FEATURES • Full unit circle interaction • Sine visualization • Triangle overlay • Degree/radian switching • All UI customization options UNLOCK EVERYTHING (One-Time Purchase) • One-time purchase for lifetime access to all paid features • Cosine, tangent, secant, cosecant, cotangent • All future paid features
Screenshots
Verdict
The clearest difference is in-app purchases: Guess the Graph at none against Touch Trigonometry's 1. Touch Trigonometry's advantage is iOS requirement (15.1 vs 17.6). 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. Touch Trigonometry sells 1 one-off in-app purchase. Guess the Graph asks for nothing beyond the download.
| Parameter | Guess the Graph | Touch Trigonometry |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, Mac — better | iPhone, iPod |
| Requires iOS | 17.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 4 MB | 48 MB |
| Age rating | 9+ | 4+ |
| Developer | Tianze Guan | Aisatsu LLC |
In-app purchases
Guess the Graph
No in-app purchases
Touch Trigonometry
- Touch Trigonometry$4.99
Questions
Is Guess the Graph free?
Is Touch Trigonometry free?
Do Guess the Graph or Touch Trigonometry have ads?
Other comparisons















