Need curve fitting or graph data digitizing?

Hi everyone!
I'm working with data analysis and face the need to process data and build predictions. Curve fitting is one of the things I do on a weekly basis. Recently I discovered a service that simplifies this job. Their free curve fitting tool is explained in this article https://splinecloud.com/features/curve-fitting/ .
In addition, this resource has graph data digitizing tools that help extract data from image plots. Here is a nice explanation of the approach of plot digitizing https://splinecloud.com/features/plot-digitizing/.
I hope some of you will find these tools useful!

 

[tepalia02]

Is it free or paid?

 

[D.A.(Tony)Stewart]

no free lunch with this level of service.

But it does look more comprehensive than spreadsheet iterations on best R^2 fit on polynomials up to 15th order or so and other standard ones.