NumLogger is a free online number journal: log the numbers of your life — weight, sleep, spending, running — day by day, and see your change in trend charts, weekly/monthly averages and check-in calendars. Start in one click from the official presets below, or build fully custom projects. No sign-up required: data stays in your browser and syncs to the server once you log in.
Features
Custom tracking projects: number inputs (with range and precision), single/multi-choice tags, text notes
Computed fields: BMI, pace, calorie balance and more, calculated automatically by formulas
Multiple stat views: trend charts, weekly/monthly averages, month/year check-in calendars
Log as you go: multiple entries a day are summed automatically, and any missed date can be backfilled
Guest mode without sign-up: data stays in this browser and syncs after login; 11 languages, light/dark themes
Official presets
⚖️ Weight — Weigh at a fixed time every day and watch the long-term trend
🍔 Calories — Log every meal and workout as it happens and see your daily calorie balance
💪 Push-ups — Log push-ups by set — reps × sets are totaled automatically
🦵 Squats — Log squats by set — reps × sets are totaled automatically
🏃 Running — Log distance and time; pace is computed automatically
😴 Sleep — Log each night's duration and subjective quality
💧 Water — How many cups of water today
📗 Vocabulary — How many words you memorized today
💸 Daily spending — How much you spent today in total