Many people track food in one app and activity on a watch. Without connecting them, it is harder to see how movement, sleep, and intake relate to your weight trend.
What Garmin sync adds
When you connect Garmin Connect (with your consent), Weight Forecast can import daily summaries such as:
- Steps and active calories
- Heart rate summaries
- Sleep duration and quality scores
Workouts do not sync automatically — you schedule workouts in the app separately. Daily summaries appear alongside your weigh-ins and meal estimates in your diary. You still log food and weight in Weight Forecast — Garmin does not replace those entries.
How it relates to your goal date
Your approximate goal date comes from a straight-line trend through your weigh-ins, not from Garmin alone. Activity and sleep add context around that trend — for example, whether a stall might line up with poor sleep or a quieter week — but they do not replace the scale data the line is built from.
Setup
- Open Weight Forecast → Integrations
- Choose Connect Garmin
- Authorize through Garmin's OAuth screen
After that, new daily summaries from your watch can flow into your diary automatically. You can disconnect at any time in Integrations or in Garmin Connect.
The bottom line
Garmin sync is optional context, not a requirement. If you already wear a Garmin, connecting it keeps activity and sleep next to your weigh-ins and meal log — one place to review how your week looked before you interpret the trend.