We have deliberately not integrated ovulation tests and their results into our trackle app, because unfortunately they cannot provide very reliable information about possible (imminent) ovulation.
As you may already know, trackle is based on the symptothermal method. The symptothermal method can reliably determine your fertile period and your ovulation in retrospect. Because the time of ovulation can shift in each cycle, no method like the symptothermal method can predict ovulation 100% reliably. Ovulation tests claim that they can predict ovulation ahead of time. This is not compatible with the evaluation according to the symptothermal method.