Questions, bugs, or feedback: thomas.frosio@gmail.com. I read every message. Please include your phone model and its iOS or Android version (and your watch model, if the problem is on the watch) if you are reporting a problem.
The Android app and its watch app are coming soon to Google Play. It is the same app as on iPhone: the same model, number for number, the same screens, the same eight looks, and the same ten languages. It reads Health Connect instead of Apple Health. It needs Android 9 or later and Health Connect, which newer versions of Android include and older ones get from Google Play. Circles, the friend sharing, is on iPhone only.
No. Vigor reads Apple Health on iPhone and Health Connect on Android, so any watch, ring or app that writes your health data there works - a Garmin, Oura, Whoop, Fitbit, Polar or Withings device, a smartwatch, or a sleep app. What it needs is the data, not a particular brand: heart rate and sleep, with heart rate variability and workouts making the score sharper. Sleep-stage detail needs a source that records sleep stages; without stages Vigor still scores the night from its duration and your sleeping heart rate. The optional watch app is the one part that needs a smartwatch able to run apps. With no tracker at all you can turn on sample data in Settings, under Data, to see how the app works.
Vigor learns your personal baseline. On first run it reads about two months of your Apple Health history, so it usually has a good baseline right away; if you are new to wearing a tracker it improves as more data accumulates. On Android, Health Connect lets an app read only the 30 days before you first gave it access, unless you also allow access to older data when Vigor asks; allow it, and the baseline starts from the same two months.
No. Vigor is a general wellness and information tool. It is not intended to diagnose, treat, cure, or prevent any disease. Wrist-worn sensor readings are non-clinical, so the score is an estimate. Always consult a qualified professional for health decisions.
Yes. Your health data is read from Apple Health or Health Connect and used on your phone to compute your score; your health data never leaves your own devices. There is no account, no Vigor server, no ads, and no analytics, and on Android the app does not even ask for internet access. The only thing you can choose to share is your energy score with friends, through the opt-in Circles feature on iPhone (see below), via your own iCloud. See the Privacy Policy for details. You can turn off Vigor's access anytime: on iPhone in Settings, Privacy and Security, Health; on Android in Health Connect's settings, under App permissions.
Circles is an optional, opt-in way to share energy with friends, and it works one friend at a time. It is in the iPhone app only. Each connection is separate and private: your friends cannot see each other, and they cannot see who else you are connected to. Only your chosen display name, an optional avatar, and values derived from your energy score are shared - never your health data (heart rate, sleep, and so on). The shared data lives in your own Apple iCloud; there is no Vigor server, and the developer cannot read it.
You decide, for each friend separately, what that person sees: the score and its zone always, and then only what you allow - the trend arrow, your week variation, your morning starting number, how much the night gave back, your average morning, your streak, or the rough shape of your day. You can pause someone without disconnecting, mute their nudges, or remove them entirely, which stops sharing in both directions and deletes what you shared with them.
Open the Circle tab. Give a friend your short join code (for example
A1B2-C3D4) or let them scan the QR code shown there with the Camera
app. To add someone, enter their code under "Add a friend".
A code only lets you ASK. It sends the other person a request, which they accept or decline, and nothing is shared in either direction until they accept - so handing out your code never exposes your number by itself. If you decline a request, the other person is simply told nothing; their request quietly expires. Both people need Vigor and an iCloud account, and both need the current version of the app. A join code expires after 90 days; you can also get a new one at any time, which makes the old code stop working without affecting the friends you already have.
No. On the App Store, Vigor is a one-time purchase of USD 2.99 (or your local equivalent). No subscription, no ads, no trackers, no in-app purchases.
Open Settings inside Vigor and pick one of the eight looks: Modern, Kawaii, OLED, Nature, Neko, Pixel, Silk, or Formal. The picker shows live previews and a full-screen try-on, and every look has light and dark palettes; the app opens in its light look by default, and Settings > Appearance can follow the system or force light or dark. The optional watch app and the widgets follow your choice, or you can pick a different look directly on the watch.
Yes. In Settings, under Energy model, you can pick a sensitivity preset (Gentle reacts less to a single rough night, Balanced is the default, Responsive reacts more), set your personal sleep need (6.0 to 9.5 hours, or Automatic), choose the morning level the model aims for after a full recovery (60 to 90), and override the gauge style (ring, arc, or bar). If the score ever feels off after a long break or a sensor change, the Recalibrate button on the same screen rebuilds your baselines from recent data.
It puts your energy on the wrist in five pages: your score with the day's charge and drain, the day curve you scrub with the crown, a live heart-rate page, morning readiness with its inputs, and tonight's wake-up target. It uses the same look and model settings as your phone, and adds watch-face complications, including a one-tap caffeine tag. With the iPhone app, the watch refreshes when you raise your wrist and appears in the Smart Stack when it is most relevant (mornings, after workouts, when energy runs low); the score is computed on the iPhone and synced to the watch, so keep the iPhone app installed. With the Android app, the watch shows what your phone computed and says how old it is, and tapping the gauge asks the phone for a fresh one; keep the phone app installed, and open it once after installing the watch app.
One Vigor widget you can resize from small to large, showing your energy, tonight's sleep, or morning readiness - you choose when you place it, and can change it from its long-press menu. There is also a Quick Settings tile, and long-pressing the app icon offers My Energy, Sleep Tonight and Log a Day Tag.
Day tags (alcohol, caffeine, sickness, travel) tell the model why your body signals look unusual, so it can adapt - for example a sick day recovers more gently, and a travel day tolerates a shifted schedule. Tags only affect the day you put them on.
Vigor's body energy model is built on published, peer reviewed research. These are the primary sources behind how it reads sleep, heart rate, heart rate variability, and training load. Vigor is a wellness and information tool, not a medical device, and does not provide medical advice.
Vigor is an independent app built on Apple Health and Health Connect and is not affiliated with, endorsed by, or connected to any fitness-device maker.