Thank you for your post.
What type of chart are you displaying?
Here are the steps I took:
1. I created a table "TEST" with one Number field "Number".
2. I entered three records with the values 15, 20, 25.
3. I went into Layout Mode and added a bar chart named "Chart" and set the Y-Axis to display "Values" using the field "Number".
Below is the results that display in FileMaker Go 13.
It is line charts! And neither FMGo 12 nor FMGo 13 show the chart as it is shown on the desktop version.
You don't provide a lot of detail for me to test. Below is an updated screen shot from my iPad that now includes a line chart based on the data I supplied earlier.
Sorry, I don't know what to say! Do you have any ideas of what might be the problem? The charts are just fine on desktop....
You might start by describing the specific options that you selected when setting up the chart--especially the data source options. That could help TSGal better replicate the issue.
Also, try this "cheap fix": Double Click your Home button to get the display that shows all currently open apps. Flick the FileMaker Go App up to close it. Then re-open FileMaker GO and return to your chart layout. Do you now see a chart?