Focus Battery
9:41●●● ▰
Tuesday, Sep 8
3
DEEP-WORK BLOCKS
Focus Battery 72Normal day
Sleep1h 45m below usual
6h 15m
HRVWithin your range
51 ms
Resting HRIn line with usual
60 bpm
Start block
9:57●●● ▰
BLOCK 1 OF 3
53:55Draft the strategy memo

One protected block. Nothing else.

Pause
10:56●●● ▰
BLOCK 1 OF 3

How was your focus?

75 minutes recorded.

▮▯▯▯▯Low
▮▮▯▯▯Fair
▮▮▮▯▯Good
▮▮▮▮▯Strong
▮▮▮▮▮Excellent

Recovery is already running · 14:56 left

9:41●●● ▰
Tuesday, Sep 8
3
DEEP-WORK BLOCKS
Focus Battery 72Normal day
Sleep1h 45m below usual
6h 15m
HRVWithin your range
51 ms
Resting HRIn line with usual
60 bpm
Start block
9:57●●● ▰
BLOCK 1 OF 3
53:55Draft the strategy memo

One protected block. Nothing else.

Pause
10:56●●● ▰
BLOCK 1 OF 3

How was your focus?

75 minutes recorded.

▮▯▯▯▯Low
▮▮▯▯▯Fair
▮▮▮▯▯Good
▮▮▮▮▯Strong
▮▮▮▮▮Excellent

Recovery is already running · 14:56 left

Built for high-quality work

Your attention is limited. Spend it deliberately.

Focus Battery turns your recovery signals into a daily deep-work budget — then helps you decide what deserves it.

Built for iPhone + Apple Watch · Health data stays on your device · See the signal layer
9:43●●● ▰
What deserves your battery?

3 blocks.
Spend them well.

Protect your best attention for the work that matters most.

Finish pricing modelAnalysis · High focus · Block 1
Draft launch memoWriting · Medium focus · Block 2
Review strategy deckReview · Medium focus · Block 3
Start Block 1
11:12●●● ▰
RECOVERY
10:56Ends at 11:23 AM

Step away from the screen.

Recovery is part of the work loop, not a pause in it.

Back to Today
6:08●●● ▰
Personalized

Focus Battery is learning how you work best.

EARLY SIGNAL
Your first analytical blocks have rated strongest so far.

Based on 7 meaningful rated blocks. We’ll keep learning before making stronger recommendations.

HOW TODAY HELD UP
3 recommended blocks · 4.3/5 average focus

Your extra block rated lower today. One day is not a conclusion.

9:43●●● ▰
What deserves your battery?

3 blocks.
Spend them well.

Protect your best attention for the work that matters most.

Finish pricing modelAnalysis · High focus · Block 1
Draft launch memoWriting · Medium focus · Block 2
Review strategy deckReview · Medium focus · Block 3
Start Block 1
11:12●●● ▰
RECOVERY
10:56Ends at 11:23 AM

Step away from the screen.

Recovery is part of the work loop, not a pause in it.

Back to Today
6:08●●● ▰
Personalized

Focus Battery is learning how you work best.

EARLY SIGNAL
Your first analytical blocks have rated strongest so far.

Based on 7 meaningful rated blocks. We’ll keep learning before making stronger recommendations.

HOW TODAY HELD UP
3 recommended blocks · 4.3/5 average focus

Your extra block rated lower today. One day is not a conclusion.

The signal layer

Your body leaves clues before your calendar does.

Focus Battery reads a deliberately small set of recovery signals from Apple Health — sleep, HRV and resting heart rate — then compares them with your own recent baseline. The goal is not a health score. It is a better question for your workday: how much deep focus should I actually plan?

A sample morningcompared with your baseline
☾
Sleep1h 45m below your usual
6h 15mrecent nights
≋
HRVWithin your recent range
51 mspersonal baseline
♥
Resting heart rateIn line with your usual
60 bpmpersonal baseline
↓
Work-planning estimateNormal day
3deep-work blocks
Personal, not population-basedYour signals are interpreted relative to your recent pattern, not a universal “good HRV” number.
Missing data isn’t inventedIf a signal is missing, Focus Battery lowers confidence instead of pretending it knows.
Private by designYour Health data stays on your device. Focus Battery uses the result to help plan work, not diagnose you.
What would your Focus Battery say tomorrow morning?
Focus Battery is a work-planning tool, not a medical device. Its recommendation is an estimate built from your own recent recovery pattern.
Not another productivity timer

Plan the day around your focus — not your to-do list.

Most productivity apps start with everything you need to get done. Focus Battery starts with a different question: how much high-quality attention do you actually have to spend today?

1
Know your daily Focus BatteryA simple 1–4 block budget built from your recent recovery pattern.
2
Decide what deserves itProtect scarce high-focus blocks for the work that matters most.
3
Focus, then recoverWork in deliberate blocks and protect recovery before the next one.
4
Teach Focus Battery what worksRate your focus and let the app learn your personal work patterns over time.
Early beta

Help shape Focus Battery.

We’re looking for iPhone + Apple Watch users who do demanding knowledge work. You get early access. We ask that you use Focus Battery as part of your normal workday and tell us what feels useful, confusing, or wrong.

You’re on the early tester list. We’ll email you when your beta invite is ready.
By joining, you agree to receive Focus Battery beta invitations and occasional product updates. Unsubscribe anytime. Privacy Notice.