SmartPIV vs GraphMath
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SmartPIV
This application allows users to determine flow velocity in a PIV setup, replacing traditional camera and analysis software. It visually displays current analysis results through velocity vectors for easy understanding of flow development. Designed to be simple, mobile, and convenient, it offers a low-cost and intuitive alternative for hands-on training.
- Determine flow velocity in PIV setups
- Visualize flow with velocity vectors
- Replaces traditional camera and analysis software
- Low-cost and intuitive application
- Mobile and convenient for hands-on training
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DETERMINE FLOW VELOCITY SmartPIV enables you to determine flow velocity within a PIV setup (particle imaging velocimetry). The expected experimental setup of the PIV System consists of a flow channel and a laser illuminated current enriched with particles. In this setup, SmartPIV replaces the traditional camera and analysis software. VIVID VISUALIZATION VIA VELOCITY VECTORS Current analysis results are graphically displayed via velocity vectors, allowing for an easy retracing of a current's development. SIMPLE, MOBILE AND CONVENIENT In contrast to conventional PIV systems, SmartPIV is low-cost and more intuitive in its application. ABOUT US We are a team of three students and two professors developing this application for hands-on training in the domain of thermodynamics at universities and beyond. If you have feedback or questions about the app, just write us. PRIVACY POLICY & IMPRESS: https://smartpiv.app/impress/
GraphMath
This powerful graphing calculator visualizes complex mathematical functions in 2D and 3D. Explore Cartesian, cylindrical, and spherical coordinates with animated graphs and detailed tables of points. It offers features like derivatives, integrals, and intersections for comprehensive mathematical analysis.
- 3D graphing (Cartesian, Cylindrical, Spherical)
- 2D graphing (Cartesian, Polar, Parametric)
- Animated graphs
- Detailed point tables
- Derivative and integral calculations
- Intersection point finding
- Undo/redo functionality
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This graphing calculator is user friendly and powerful. It is fully compatible with iOS 14 and 15, and mostly compatible with iOS 13 and Mac OS. Cartesian 3D Z = F (X, Y) functions: ——————————————————— Graphs can be: 1. Drawn as surface, lines, or dots. 2. Drawn with or without perspective, and with different light and reflection settings. 3. Tilted up or down. 4. Rotated to any position. 5. Drawing is animated by either X, Y, or Z. Table of all points can be sorted by either X or Y. Cylindrical 3D Z = F (Θ, R) functions: ——————————————————— Graphs can be: 1. Drawn as surface, lines, or dots. 2. Drawn with or without perspective, and with different light and reflection settings. 3. Tilted up or down. 4. Rotated to any position. 5. Drawing is animated by Θ, R, or Z. Table of all points can be sorted by either Θ or R. Spherical 3D R = F (Θ, Φ) functions: ——————————————————— Graphs can be: 1. Drawn as surface, lines, or dots. 2. Drawn with or without perspective, and with different light and reflection settings. 3. Tilted up or down. 4. Rotated to any position. 5. Drawing is animated by either Θ or Φ. Table of all points can be sorted by Θ, Φ, or R. Cartesian 2D Y = F (X) functions: ———————————————— Graph displays the following curves: 1. One or two Y = F (X) functions. 2. Derivative of the first function. 3. Integral of the first function as a shade and a curve. Graph features: 1. Drawing is animated by X. 2. Clicking on the curves shows curve values, and finds closest point in the table. Tables: 1. All function, integral, and derivative values. 2. Zero intersections of first function. 3. Intersections between first and second functions. Polar 2D R = F (Θ) functions: ——————————————— Graph displays the following curves: 1. One or two R = F (Θ) functions. 2. Integral of the first function as a shade and a curve. Graph features: 1. Drawing is animated by Θ. 2. Clicking on the curves shows curve values, and finds closest point in the table. Tables: 1. Table of all function and integral values 2. Table of zero intersections of first function. 3. Table of intersections between first and second functions. Parametric 2D X = F1 (T), Y = F2 (T) functions: ————————————————————————— Graph features: 1. Drawing is animated by T. 2. Clicking on the curves shows T, X, and Y values, and finds them in the table. Table of all points. F (X, Y) = 0 equations: ———————————— Graph displays solutions as points. Clicking on the points shows X, and Y values, and finds them in the table. Table of all points. Common features: —————————— 1. List of previous entries. 2. List of preset entries. 3. Undo and redo buttons for formula entries. 4. Automatic correction of errors in function limits or steps are offered. 5. All function points can be saved to clipboard in a table format. 6. All function points can be displayed on corresponding graphs. 7. Control colors can be changed to black and white. 8. Link to Vectors and Planes 3D Geometry Guide App. 9. Link to Matrix Calculator Step by Step App. Common features of all images: 1. Animation frames can be frozen and moved back or forward. 2. Animation speed can be adjusted. 3. Zoom. 4. Scroll. 5. Save to Clipboard. 6. Save to Photos 7. Color picker. New functions and further UI improvements for our apps are coming! Developers hope to get feedback at graphmath@aol.com.
Screenshots
Verdict
The clearest difference is update cadence: GraphMath at fortnightly against SmartPIV's every 7 months. GraphMath also leads on ratings volume (12 vs 2). SmartPIV's advantage is iOS requirement (13.0 vs 15.6). On price, rating, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for SmartPIV against 5.0 for GraphMath. That said, the two scores are not equally well evidenced: GraphMath has 12 ratings behind it against 2, so its average is the more settled of the two.
SmartPIV ships an update every 7 months, GraphMath fortnightly. The most recent releases landed on September 17, 2026 and October 5, 2026 respectively.
| Parameter | SmartPIV | GraphMath |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) | 5.0 (12 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 2 | 12 — better |
| Update frequency | Every 7 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 13.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 35 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Patrick Maeder | Yuri Morozov |
Customer experience
SmartPIV
GraphMath
In-app purchases
SmartPIV
No in-app purchases
GraphMath
No in-app purchases








