Log 4 Health and Fitness

See your health as patterns, not just calories. Log food, activity, water, sleep and mood – without subscriptions, ads, accounts or pressure.

See your health as patterns, not just calories.

Log4Health is now in public beta. The app is fully available, and feedback from every screen goes directly to the person building it.

Log4Health is a quiet, flexible health tracker for food, activity, water, sleep and mood. It brings the parts of daily life you choose to record into one clear view – without telling you what you should eat, setting a programme for you or pushing you to log perfectly.

OPEN IT AND BEGIN

There is no account, login or setup flow. The app opens on Home, where food, water, activity, mood and sleep are ready to log.

Every field is optional. Save a quick entry, add more detail, or leave it partial and return later.

FOOD LOGGING, YOUR WAY

Type "2 eggs, toast and coffee" and Log4Health breaks the entry into recognised foods with estimated nutrition. Use quick add when detail is not worth the effort, or enter foods manually when you want full control.

The result is editable. Relink an item, split a dish into ingredients, combine foods, change a nutrition value, add something missing or remove something wrong. A detected meal is a starting point, not a verdict.

Past meals can be reused, so logging gets easier after the first few days.

The database contains around 3,600 generic, international foods, sourced mainly from national nutrition databases. Searches favour real foods instead of commercial product clutter. Food search also understands Dutch, Spanish and French names, and foods carry a plain-language health rating, from Super Healthy to Very Unhealthy, worked out with the European Nutri-Score method wherever the nutrition data allows.

MORE THAN FOOD

Log activity by type, intensity and duration. Save a regular activity once and reuse it later with its details prefilled.

Record water with minimal effort.

Log sleep duration and quality, with an optional bedtime and wake-time window.

Record mood and energy separately, add the part of the day and write a note when it helps.

YOUR RECORD, REFLECTED CLEARLY

Day insights place what you recorded side by side: food, activity, water, sleep and mood. See calories in and out alongside macronutrients, salt, food groups, fruit and vegetables, activity intensity, hydration, sleep quality and mood.

Week insights help you review the shape of a recorded week. Month views show your tracking rhythm and calendar.

Log4Health does not diagnose, prescribe or tell you that one habit caused another. It gives you a clearer record from which you can make your own observations.

QUIET BY DESIGN

• Free, with no subscription, ads or in-app purchases • No account and nothing to sign up for • Offline-first, with your diary stored on your device • No reminders, nagging or streak pressure • No forced goals, coaching program or gamification • No smartwatch or fitness-device integration

A feedback button on every screen sends comments directly to the person building the app. The Library contains short explainers and carefully selected links.

Use Log4Health for a detailed record, a quick check-in, or a few weeks of focused observation. You do not need to track perfectly. Just begin.

CREDITS

Some icons in the app have been used from the Noun Project under the Creative Commons License BY 3.0. See the full list of attributions: https://log4health.com/noun-project-icons-attribution.