Hello @Krisztian_Pinter
With Backendless you can do it very easy!
- Create new app
Choose name
2.Creat simple table
- Create a chart
- Create page in UI-builder
- Choose Chart from files
- Go to preview
In new tab you can change values of population in table Cities and see changes in live
This was a simple example. You can customize this very much
Regard, Viktor