Nub techs how accurate?

[Jowd92]

Just wondered really if anyone else had used these and they was correct I know there is obviously no guarantee until birth but just wondered actually how accurate are these nub techs and the predictions they give

I was told 85% chance girl. It's a boy!

Not accurate at all then I’ve never done it in my previous pregnancy’s so thought I would try it I’m having a private scan next month so will see what that says

I was also told 85% chance girl and it was a boy

I was told 90% boy and it’s a boy

Just a quick update after nub techs saying 95percent boy had my gender scan last night and it’s a baby girl :)