Graphs of statistics
Graphs of statistics over time, such as average, strike/spare/split percentages, etc. would be another way to visualize progress over time.
I would also love this feature! Having graphical reports of games, averages, spares, splits, conversions and all of that would be nice. Reporting is so important when tracking stats. It helps to know what ball you average the highest with, where you bowl the best, what pins you leave the most and which pins have the lowest/highest conversion rates. All of the statistics that you track can lead to more productive practice sessions.