Older, analog weighing scales may be simpler to use than digital ones and do not require electricity, but they may not be as accurate, according to a Washington Post article. They use simple springs, which are not as accurate as modern methods.
Analog scales are generally cheaper and more widely available than digital scales, the Washington Post claims. Digital scales, on the other hand, often have features that provide additional context to their readings. For instance, many of them use electrical conductivity to measure the user's body fat percentage. Some also record previous readings to determine whether the user gained or lost weight.