Equation Fitting Studio

Equation Fitting Studio is a powerful and practical tool for curve fitting, surface fitting, regression analysis, and mathematical model development. Designed for engineers, scientists, researchers, students, and professionals, the app helps transform experimental or numerical data into useful mathematical equations.
Enter data manually, paste data directly, or import data from Excel files and explore a wide range of mathematical models.
Main features
• 2D Curve Fitting – Fit Y versus X data to a large library of predefined equations, including polynomial, exponential, logarithmic, trigonometric, power, rational, and other mathematical models.
• 3D Curve Fitting – Fit Z as a function of X and Y using a broad collection of two-variable surface models.
• Symbolic Regression (GP)– Discover mathematical relationships directly from multivariable data using genetic programming. Select the dependent and independent variables as well as the mathematical functions and operators used in equation discovery.
• Custom Equation Fitting – Define your own mathematical equation with one or more independent variables and estimate its unknown coefficients from data.
• Engineering Models Fitting – Select established mathematical models from different engineering and scientific fields and determine their model parameters from experimental data.
Flexible data input
Data can be entered manually, pasted from other applications, or imported from Excel files. When importing tabular data, you can select the columns to use as variables.
Comprehensive fitting statistics
Compare fitted models using statistical measures such as R², adjusted R², RMSE, MAE, SSE, and other goodness-of-fit indicators. Models can be ranked to help identify equations that best represent your data.
Visualize your results
Examine fitted equations together with graphical comparisons between experimental data and model predictions. This makes it easier to evaluate both the numerical accuracy and behavior of a fitted model.
Whether you are analyzing laboratory measurements, developing empirical correlations, fitting engineering models, exploring scientific datasets, or searching for mathematical relationships between variables, Equation Fitting Studio provides a convenient modeling environment directly on your Android device.