This is the scale I bought for my home kitchen. It’s super easy to use right out of the box. It does use batteries, so you don’t have to plug it in, but eventually you will have to replace your batteries. It’s very light and very portable – if you needed it on the go. You place your plate/bowl on the scale, press the “tare” button to zero out the scale and then just add your ingredients. Or, if you want to use it in reverse, place your bowl full of ingredients on the scale, press tare to zero out the scale. Then, as you remove the ingredients, the negative number will be the weight of the ingredients you removed. Press tare after you add or remove each ingredient.