Ava bracelet vs manual bbt

Amy

So I’m horrible at recording my manual bbt and have been thinking about the Ava. Before I spend $200 on a device I hope helps me conceive quickly... I had an idea. What about the FridaBaby FeverFrida or the EnfaSmart FeverSense... do you think that would do the trick and then I’d have a device for when baby gets here... thoughts or is it crazy?