Launching May 1, 2026

FocusKit,
your personal cognitive edge.

The moments that matter most are the ones you can't afford to guess.

FocusKit learns how your brain actually works — from your sleep, your schedule, your real data. So when the stakes are real, you show up sharp. Not lucky.

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A young man at his desk looking at a calendar event for Friday 2 PM Interview
Act 1 · Generic tools right now

It's Monday now.On Friday at 2 PM, you have the most important interview of your year.

Naturally, you Google "how to perform at my mental peak." Then you ask ChatGPT. Then a friend who took the interview last year. They all give you the same answers — and none of them actually know you.

Google

Sleep 8 hours. Hydrate. Avoid caffeine after 2 PM.

ChatGPT

Eat clean. Exercise. Practice mindfulness.

A friend

Honestly? Just relax. You got this.

Generic advice has a generic problem.
It doesn't know you.

It doesn't know that when you sleep under 7.5 hours and have back-to-back morning meetings, your afternoon focus crashes 52% — nearly double the drop from either factor alone.

It doesn't know that heavy carb lunches wreck you — but only on days you skip the morning workout.

It doesn't know that, weirdly, 5 minutes of Instagram resets you better than coffee. 14 times out of 17.

For knowledge workers, focus is a black box. And when it matters most — an interview, a board pitch, a demo day — we're still guessing.

Act 2 · Monday afternoon

You open FocusKit.
It already knows Friday 2 PM matters.

It's on your calendar — flagged "interview." So it hands you a 4-day plan, tied to your actual schedule and your last three months of data.

Wed + Thu
Lights out by 11:30. At least 7.5 hours of sleep.
Both your afternoon blocks that week are heavy. The compound cost hits hardest 48 hours out.
Friday lunch
Skip the heavy carb lunch.
Your post-lunch glucose dip costs you ~20 minutes of peak focus, landing right at 2 PM.
Friday 1:45 PM
15-minute walk before you sit down.
On high-stakes afternoons, your pre-event walks correlate with a 31% better focus score in the hour that follows.
Friday 2:00 PM
Show up. You've prepared.
Not generic preparation. Preparation built around this exact moment.
FocusKit weekly plan screen showing 4-day prescription

You stop preparing in general. You start preparing for Friday.

Act 3 · How does it know any of that?

Every week, your data becomes your manual.

FocusKit fuses your real-time EEG focus signal with everything else: sleep, calendar, meals, movement, screen time. Then it surfaces interaction effects that generic AI will never catch — because no generic AI has your data.

Multi-source data fusion

Apple Watch sleep stages, HRV, heart rate, workouts. Apple Calendar events and meeting density. Manual logs of caffeine and meals. iOS Screen Time. And your live EEG focus score from FocusKit itself.

All in one timeline. All correlated. All for you.

Apple Watch Apple Calendar Apple Fitness Screen Time Manual logs EEG signal
Weekly report summary metrics Daily timeline of multi-source data

Three findings from a real Week 16:

Subtle, personal causations no generic model can surface — because it doesn't have your data.

Sleep · Confidence 85%

On days you slept under 7.5h AND had back-to-back meetings before noon, your afternoon focus crashed 52% — nearly double the drop from either factor alone.

Tuesday was exactly this combo: 6.8h sleep + 3 morning meetings. Individually survivable. Together, a wipeout.

Heavy lunch · Confidence 78%

High-carb lunches tank your 2–4 PM focus — but only on days you skipped morning exercise. When you worked out, carbs barely affected you.

Thursday: no workout + pasta lunch → your worst afternoon score this month. Friday: same pasta, but you ran at 7 AM → completely fine.

Reset patterns · Confidence 72%

5 minutes of Instagram outperforms coffee — for you. 14 times out of 17.

We don't know why. We just know it does.

Weekly findings card view in app

Every week, your cognitive operating manual gets thicker. Next week's plan gets sharper.

Act 4 · Friday, 1:55 PM

You followed the plan. You should be sharp.But focus isn't a guarantee — it's a probability.

So FocusKit rides along in real time.

The behind-the-ear device reads your live EEG focus signal. The moment you drift — attention slips, hand reaches for the phone — a gentle haptic pulls you back.

No notification. No guilt. Just a tap that says: you're off-track, come back.

End the session. You get a focus score. It flows straight back into your timeline — making next Friday's plan even more accurate.

App home screen showing real-time focus coaching tip

The device itself.

A C-shaped clip that hugs the back of your ear. 18 grams. Dry electrodes. Tap the dots to explore.

FocusKit C-shaped behind-the-ear device
1

Dry EEG electrodes

No gel, no setup. Reads brain signal directly through skin contact at the mastoid.

2

18g, behind-the-ear

Lighter than most earbuds. Your ear canal stays free for headphones.

3

On-device processing

ADS1299 + nRF5340. Streams your real-time focus state to your phone over BLE 5.3.

4

Gentle haptic feedback

When you drift, a soft pulse pulls you back. No notification. No guilt.

1

Dry electrodes

No gel, no skin prep. Just wear it.

2

18 grams · ear canal free

Works with any headphones. Comfortable for 8-hour wear.

3

5+1 EEG channels

Mastoid + temporal placement. 250Hz, 24-bit. Medical-grade signal at consumer price.

4

Real-time haptic loop

Detects drift in seconds. Pulls you back without breaking flow.

The full loop

Every high-stakes moment makes the next one sharper.

Long-term data → personalized prescription → real-time protection → richer data. The longer you use it, the more it understands you.

Long-term data Personalized plan Real-time protection Richer data FocusKit — THE LOOP —
Who it's for

When your focus is the asset.

FocusKit is built for the people whose performance directly translates into outcomes — and who can't afford to leave it to chance.

Senior knowledge worker at desk

Senior knowledge workers

Professors · Senior engineers · Physicians · Founders
Understand why performance varies.
  • Grant deadlines & tenure review writing
  • Architectural reviews & production incidents
  • Diagnostic shifts & surgical mornings
  • Board pitches & demo days
College student studying

High-performance students

STEM · Pre-med · Graduate
Stay focused when stakes are highest.
  • Final exams
  • Internship interviews
  • Research deadlines
  • Application essays
Lucas Zhang, founder of FocusKit
Built by

Lucas.

I started FocusKit because I needed it myself — I wanted a clearer way to see my own focus, and nothing on the market quite got there. So I've been building what I can on my own: the hardware, the iOS app, the AI layer, the research. It's early. A lot of it is still rough, and I'm figuring things out as I go.

I'm looking for two people to build this with me — a technical co-founder and a go-to-market co-founder. If the problem resonates with you, or you've been thinking about focus, cognition, or wearables and want to build something real, I'd genuinely love to hear from you.

Reach out → LinkedIn Twitter
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