So my first impression is that it is much better than Fertility Friend…comparing apples to apples (they are both free to use).
It is much more user friendly, and it is clearly a lot better than Fertility Friend in terms of what information it gives me.
Now comparing it to duofertility is not very fair given the price difference, but even just on the prediction of the fertile days, I get far too many fertile days with Ovuline ( duofertility gives me 4 or 5 days a cycle and tells me out of those which are best). Ovuline gives me a window of 13 days, so out of a 26 days cycle, that is half of it.
I think that they are not actually calculating much as it has not taken the input information on the system: my most fertile days according to duo were the 26-28th of June and that matches with my ovulation. But Ovuline says it was from the 23-28, peaking in the middle of that.
So I am still feeling more confident about duofertility.
Ovuline may be good if you have regular cycle , or cannot count on a calendar – but it’s not clear to me that there is much more to it yet.
That said – it was my first month and it may be better in future.
This is my Ovuline chart: