Your Apple Health data: a privacy guide

Health data is personal. When an app asks to read it, you deserve a straight answer to three questions: what does it read, where does it go, and who else sees it?

Here are our straight answers for TamagoFit. The legal version lives in our privacy policy.

How Apple Health permissions work

On iPhone, apps never get your health data by default. iOS shows a permission sheet listing each data type, and you decide one by one. You can say yes to some and no to others, and change your mind later. Apple also doesn't tell apps which read permissions you declined.

What TamagoFit asks to read

TamagoFit requests read access to:

• Steps
• Active energy (calories burned through activity)
• Walking and running distance
• Sleep analysis
• Mindful minutes
• Heart rate

Steps are the heart of the game: they hatch your egg and earn coins and XP. The others are optional. If you turn one off, iOS simply gives TamagoFit nothing for it (it counts as zero) and the rest of the game works the same. Without calories, for example, you just don't earn calorie coins.

What reaches our servers

Your game runs on our servers (that's how your monster keeps living while your phone is in your pocket). To do that, TamagoFit sends daily totals only:

• Total steps for the day
• Active calories for the day (plus a small estimate per step when there's no Apple Watch data)
• Distance for the day
• Hours of sleep
• Mindful minutes

No minute-by-minute history, no locations, no workout routes.

Why daily totals only

A game doesn't need to know when you walked to the bus or how well you slept at 3 am. It needs to know roughly how active your day was. So we designed TamagoFit around the smallest useful thing: one total per day.

Less data collected means less data that could ever be exposed. It also keeps the game fair: the server checks the day's totals, so your coins and XP stay consistent across devices.

What never leaves your iPhone

Heart rate is read on your phone but is never sent to our servers. Everything Apple Health stores beyond the daily totals listed above stays on your device.

Who sees your health data

• Never sold. We don't sell health data, to anyone.
• Never used for ads. TamagoFit has no ads, and health data is never used for advertising.
• Never shared with friends. Friends see your player name, avatar, level, monster and island, but never your steps, calories, sleep or any other health number.
• Analytics stay coarse. Our analytics only receive aggregated step counts to balance the game, never your name or e-mail.

Want to know more about what friends can and can't see? Read Playing with friends safely.

Changing your mind

You're in control at all times. To change what TamagoFit can read:

1. Open the Settings app on your iPhone.
2. Go to Health > Data Access & Devices.
3. Tap TamagoFit and turn each data type on or off.

If you turn off steps, TamagoFit receives no steps, so your egg, coins and XP stop moving until you turn them back on. Your account and everything you own stay as they are.

Deleting your data

You can delete your account from inside the app. When you do, the daily health snapshots we stored are deleted along with it. For anything else, our privacy policy explains what is kept and why, and you can always reach us through support.

Questions to ask any health app

Whether it's TamagoFit or another app, these are good questions before you tap “Allow”:

• Does it really need each data type it asks for?
• Does it send raw data or just totals?
• Does it write to Apple Health, and why?
• Is health data used for ads or sold?
• Can you delete your account and data easily?

TamagoFit is a game, not a medical app. It doesn't diagnose anything or give health advice; it just turns your walks into a little adventure.