transferring contacts from Blackberry Z10 to iPhone

I found info here that was 5 to 10 years old (BUT EXTREMELY HELPFUL) about transferring contacts to iphone. What I found about InTouch worked for me and was fairly easy. I installed the InTouch app on my Blackberry. Created an account. It took a few minutes, maybe, to collect my contacts. Then installed app on the iPhone (with no sim inserted, WiFi connection though). Signed in with my email (not my phone number). Account had to be verified. When it was finally done, I simply went to the contacts on iPhone and they were there. I'm very thankful for the old posts!