Comparison

SmartPIV vs GraphMath

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

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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/

About

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.

Highlights
  • 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
Features
Read full description

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

SmartPIV4 screens
GraphMath4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

SmartPIV ships an update every 7 months, GraphMath fortnightly. The most recent releases landed on September 17, 2026 and October 5, 2026 respectively.

Scorecard3 real differences · 7 level
SmartPIV versus GraphMath: the parameters behind the verdict, then further details
ParameterSmartPIVGraphMath
PriceFreeFree
Rating5.0 (2 ratings)5.0 (12 ratings)
Positive reviews—100.0% of reviews
Number of ratings212 — better
Update frequencyEvery 7 monthsFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS13.0 — better15.6
Further details — not scored
Size35 MB6 MB
Age rating4+4+
DeveloperPatrick MaederYuri Morozov

Customer experience

SmartPIV

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

GraphMath

All ratings12 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

SmartPIV

No in-app purchases

None

GraphMath

No in-app purchases

Questions

Is SmartPIV free?
SmartPIV is free to download, with no in-app purchases.
Is GraphMath free?
GraphMath is free to download, with no in-app purchases.
Which has better reviews, SmartPIV or GraphMath?
SmartPIV and GraphMath are both rated 5.0 out of 5 on the App Store, from 2 and 12 ratings respectively.
Do SmartPIV or GraphMath have ads?
Neither SmartPIV nor GraphMath shows ads.
Which is updated more often, SmartPIV or GraphMath?
SmartPIV ships an update every 7 months, and GraphMath fortnightly. Most recently, SmartPIV was updated on September 17, 2026 and GraphMath on October 5, 2026.

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