🌸Spring 2026 Pebble App Contest — View the entries!

Stamina

SIDEffect's

Watchapp
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Description

Stamina is a private wellness tracker for your intimate life, solo or with a partner. It measures rhythm, heart rate and estimated calories, and shows how a session affects your sleep and the start of your day.

All data stays on your watch. No account, no cloud. Only if you turn on timeline pins, their short text is sent.

TRACK
• Motion detection counts movements and shows your rhythm per minute
• Heart rate every second: average, min, max
• Calorie estimate from movement and heart rate
• Mark the peak moment with a button press or swipe

UNDERSTAND
• Sleep afterwards: time to fall asleep, duration, deep sleep, compared with your normal nights
• Start of the day: steps, activity and heart rate in the 4 hours after a morning session, plus a short mood check-in
• Charts per day, week and month, solo and partner
• 59 achievements for milestones, records and streaks

PARTNER MODE
• Teach the watch your own positions (name them by voice), with live detection and time share per position
• Optional partner initials

SMART AND DISCREET
• Auto start with optional time window
• Calibration adapts detection to you
• Display light options, touch controls on Pebble Time 2
• Optional timeline pins (sent via the Rebble timeline server)
• Neutral wording on the watch, 19 languages

TIP: Wear the watch on the hand that does the movement. Detection works best there.

This is a beta (0.6). Intended for adults. Values are estimates, not medical advice.

Vibe coded from start to store. That is the only reason it exists alongside a full time job.

Support development: buymeacoffee.com/SIDEffects
  • DeveloperSIDEffect's
  • CategoryHealth & Fitness
  • PlatformsTime/Time Steel, 2, 2 Duo, Time 2
  • Updated2026-09-19
  • Version0.6