FAQ
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How is the score of the habit strength calculated?
We use a statistical method known as exponential smoothing to compute the strength score of a habit. It adds a weighted average that considers every repetition of the habit from the very first day you started your practice until now. Recent repetitions, however, are considered more important than older ones and have a more substantial impact on the score. This method has many good features, including:
- Every repetition counts, even way back in the past. This is not true for other more straightforward mathematical formulas, such as counting how many times you have performed the habit in the last period and then dividing by the number of days in that interval.
- If you have a poor habit strength score, a few repetitions can increase your it very quickly. As your score improves, however, the reward for each repetition gets smaller and smaller, so you have to keep at it if you want to see further increases.
- If you have a high strength score for a very long time and take a short break, it's pretty easy to restore your strength score to what it was. However, your strength score will decrease if you start taking frequent breaks.