Scales

I personally prefer daily, because I prefer having as much data as possible: my weight loss is slow, so weighing every day helps me determine my weight loss trend beyond the daily fluctuations (I have a spreadsheet and use Libra, a weight trend app).

Some people are discouraged by the daily fluctuations, so they might choose to weigh less frequently.

There's not really a "best" practice per se. It's all in what works for you. I normally weigh daily in the morning because I like learning about how my body reacts to different things. If I got a new low in the morning and then did a big workout or ate a large meal, I'll sometimes weigh at night also just to seee how my actions affected the numbers. That way I get more insight about water weight, etc. But some people make themselves crazy if they weigh too much, so that wouldn't be a good practice for them. Some people even prefer to skip the scale entirely and go off measurements or how their clothes fit. That's valid, too. For myself, though, I like playing around with numbers and it doesn't bother me.

Scale habits aside, I would encourage you to take some measurements and photos periodically also. That can really help when your brain isn't seeing progress clearly and the scale doesn't cooperate. Especially take a good before photo and the measurements that go with it. I didn't do that, and I wish I had. You don't have to post it if you feel self-conscious, but it might be really fun to have later on when you've lost more than you dreamed possible.

I weigh myself every day in the morning after using the washroom and before eating or drinking on my renpho body fat scale. I then take a weekly average and see if my weekly average is going down.

I prefer daily, in morning after bathroom and before drinking or eating. Sometimes I weigh right before bed just to see how much comes off during the night! I think weekly weighing is useful though if you aren't interested in seeing all the daily fluctuations the way I am.

Saturday morning, every week. I use a meal planner and it channels me through the week, I usually eat super light on Fridays, in prep for Saturday weigh-in. It works for me.

I weigh in daily just for the lulz, weekly for the records and calorie intake adjustments, and take pictures of myself in the morning every 3-4 days to really see the progress I am making.

Whenever I feel discouraged by the numbers on the scale, I take a look at the pictures and compare them side-by-side.

I weigh every 2 weeks.. It is sometimes hard to weight, but I find if I weigh more often, I put waaay too much stock into the number. For me, it makes most sense to do every 2 weeks.