Best app for tracking progress and looking at milestones?

Yes! I use Baby+ to track everything!

Wonder weeks is pretty good too

I am a trained nursery Practitioner and I would advise against looking at when apps and books say babies and children should be doing things and hitting milestones as every child is different and will hit them at different times. If you see that your baby should be doing something by a certain age but isn't you will worry

@Rose that makes so much sense actually