works with all Polar watches & accounts

Your training data. Finally clear.

polar.is simplifies your Polar device data into one beautiful daily view — sleep, recovery, load and trends at a glance. Works with every Polar watch from the Vantage series to the Ignite. Just connect your existing Polar Flow account. Your data stays yours: encrypted sessions, no selling, no third-party trackers. Delete everything with one click.

connect your Polar → see a demo
polar.is Tuesday, 8 May
today's readiness
Ready to train
HRV +8% · sleep score 81 · load nominal
62
HRV ms
7h 20m
sleep
412
load
Morning run
8.4 km · 42 min · Mon
zone 1
Interval session
6.1 km · 38 min · Sat
zone 3
why polar.is

Built for athletes who care about their numbers

Polar Flow shows you everything. polar.is shows you what matters.

📈
30-day trend view
HRV, sleep and load over time on one screen. Spot patterns Polar Flow buries in menus.
❤️
Zone clarity
Every session tagged zone 1 or zone 3. See your polarised training balance at a glance.
🌙
Sleep × recovery
Nightly recharge and HRV correlated automatically. Know if you should push or rest.
👥
Coach dashboard
Monitor all your athletes in one view. Shareable readiness links. No extra accounts needed.
comparison

Polar Flow vs polar.is

What you get when you go beyond the default

Polar Flow
Sleep score = single number
→
polar.is
Correlated with training load, HRV, recovery debt
Polar Flow
Nightly Recharge buried in menus
→
polar.is
Morning briefing with readiness ring + recommendation
Polar Flow
Activity = step bar chart
→
polar.is
Recovery vs activity balance with debt tracking
Polar Flow
Workouts = isolated events
→
polar.is
Fitness trajectory over months
Polar Flow
HR zones = per-workout only
→
polar.is
Weekly distribution across all activities
Polar Flow
No "form" concept
→
polar.is
Training stress balance (load vs tolerance)
Polar Flow
No sleep stage trends
→
polar.is
Sleep architecture timeline
Polar Flow
No narrative insights
→
polar.is
"Why do I feel like crap?" engine
Polar Flow
28-day data only
→
polar.is
Unlimited historical trends
for every one

Whoever you are, your data should work for you

polar.is is built for every kind of athlete — from weekend warriors to elite coaches.

for the runner
"Should I run today?"
One number. One answer. Your readiness score tells you if your body is primed for intervals, steady state, or rest. No more guessing after a bad night's sleep.
for the triathlete
"Am I overreaching across three sports?"
Training load stacked across swim, bike, and run. Spot cumulative fatigue before it becomes injury. Know when to swap a brick session for recovery.
for the strength athlete
"Is my CNS recovered?"
HRV and ANS charge reveal autonomic recovery — the missing piece for knowing when to lift heavy again. Stop leaving gains on the table from under-recovery.
for the coach
"How's my squad looking this morning?"
See every athlete's readiness at a glance. Green = go, yellow = moderate, red = rest. No spreadsheets required. Spot overreaching before it becomes injury. Plan sessions around collective recovery, not just the calendar.
for the curious
"What does my watch actually know about me?"
Turn raw Polar data into stories. Sleep architecture, fitness fingerprints, recovery debt — finally visualised.
for mums
"When did I last sleep properly?"
Track sleep debt across broken nights. See your recovery trend, not just last night's score. Know when your body is asking for rest — and when it can handle that stroller run.
for shift workers
"Is my body coping with nights?"
See how night shifts wreck your recovery in real data. Track HRV decline, sleep quality collapse, and cumulative fatigue. Prove to yourself (and your roster) when you need recovery days.
polar.is not affiliated with Polar Electro Oy · polaris.app