I signed up to Team RH in February and bought a cheap wrist tracker (on wish.com, not a recognisable brand). I tested it against my phone, and on a proper walk, the phone and the wrist tracker are pretty similar. However, my phone tracker keeps freezing suddenly (reasonably new iphone), and the wrist tracker picks up some arm movements. However, it doesn't pick up eg sitting at my desk typing and drinking tea - they have to be big arm movements. Best housework tasks to up my steps are hoovering and putting the washing away. Team RH tells everyone to aim for 15,000 steps. People with physical disabilities or something like ME are allowed 5000, and people with very little free time and desk jobs are allowed 10,000.
I hit 15,000 by walking DS to nursery in the morning (2000 steps), pottering around the office, going for a lunchtime walk (4-5000 steps in about 45 mins), more office pottering, and then walking briskly along the bus route until I hit 13,000. If I left the office on 9000 steps, I probably walk for about half an hour, but it can be longer than that. Once I've got to about 13k I get on the bus to go the rest of the way home, walk from bus stop to house and try to do at least one household chore like tidying/hanging out washing. That gets me to 15k - that and getting up again as the children ask for drinks/pudding/help with putting the TV on/me to find some random crap etc etc. I find it harder at weekends because I have to drag the kids out with me, but both of them have got much better at walking since DH and I started this (they're 7 and nearly 5, so not toddlers - I think I would have really struggled doing this with toddlers).
I had to change my routine quite a lot to get 15k - I used to get a lift with DH to drop DS at nursery, and rarely walked at lunchtime, and never walked on the way home. I am lucky in that DH picks the kids up so if it takes me a bit longer to get home then that's ok, but also, at rush hour, I can walk for a good way as fast as the bus - I'll race one, and in the city centre I keep ahead of it easily. It only overtakes once we get out of the centre and onto quieter roads!
I know my tracker isn't 100% accurate, but it gives me a benchmark. I am definitely much more active than I used to be - and I walk faster than I did, so it doesn't take as long. I haven't really stuck to the diet, but I have been pretty dedicated to the steps, and my thighs are much thinner and more toned, and my bum is perkier and smaller. I put on a denim skirt that used to be uncomfortably tight the other day and it was way looser despite me not losing much weight.