Mochi takes heart-rate variability from Apple Health and turns it into one honest number — measured against your own normal, not somebody else's average.





Your Mochi feels
alright, nothing to flag
Balanced · 52 ms HRV
Quietly, all day, from Apple Health.
Your normal, not a textbook's.

One glance and you know.
Calm · 62 ms
Balanced · 48 ms
Tense · 34 ms
Overload · 21 ms
Mochi sits where you already look. Tap through to see how each state reads at a glance.
Your companion, resting easy.
Mochi scores every reading into one of five moods — so a number you'd have to interpret becomes a face you simply recognize.
calm
balanced
tense
strained
overloadHourly, daily, weekly and monthly trends show when stress builds and when you actually recover — so an early night stops being a guess.
Mochi, Macaron, Puff, Croissy, Tiramisu, Donny and Nattie. Each one mirrors your state in its own way.








macaron · calm

We take privacy seriously.
Your health data stays on your device.
Thousands of downloads worldwide. Here's what some of them say.
Today’s number and your character are free, and stay free. Pro opens the history behind the number — the trends, the sleep, and the rest of the cast.
| Free | Pro | |
|---|---|---|
| Today's HRV Stress | Included in Free | Included in Pro |
| Stress Notifications | Included in Free | Included in Pro |
| Real-Time Stress Monitoring | Not in Free | Included in Pro |
| Feelings Log | Not in Free | Included in Pro |
| Water & Caffeine Tracking | Not in Free | Included in Pro |
| All Apple Watch Mascots | Not in Free | Included in Pro |
| Weekly & Monthly Trends for Every Habit | Not in Free | Included in Pro |
| Unlimited Health History | Not in Free | Included in Pro |
| Statistical Analysis of Stressful Periods | Not in Free | Included in Pro |
| Distribution of Stress Levels | Not in Free | Included in Pro |
| Behavior Insights | Not in Free | Included in Pro |
| Sleep Analysis | Not in Free | Included in Pro |
| Bio Age | Not in Free | Included in Pro |
| Watch Widgets & Complications | Not in Free | Included in Pro |
Answer five questions and find out where you actually are — it takes a minute.
Check your stress
