The perimenopause brain fog app that forecasts your sharp hours

You can't will your way through a 3pm fog.
You can plan around it.

Joise reads last night's sleep from Apple Health and names the hours today your brain will be sharp — and what to move out of the dip.

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Recovery buffer needed

After your 11:00 meeting

Word-finding risk ↑
Avoid calls after 16:00

Dip predicted (14:00)
8-min walk + daylight

Hot flashes trend ↑
Go lighter after 15:00

44–62% of women report cognitive complaints during the perimenopause

It’s not “you losing it.” It’s signals your tools already capture without a plan attached.

Word-finding slip

In meetings, you blank on words and it hits confidence.

Mental slowdown

Simple tasks feel heavier and emails take longer to process.

Sleep disruption

You wake up at 3–4am. You still have to perform at 9am.

Crash & guilt

You push through… then pay later with a crash and guilt.

Source: Conde DM et al. Menopause and cognitive impairment: a narrative review of current knowledge. World J Psychiatry.2021;11(8):412–428.

Stop guessing
Plan your best workday

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How Joise helps you stay sharp

Forecast your focus. Place work better. Recover without guilt.

Focus Forecast

See your best hours before the day starts.

Joise turns sleep + symptom signals into a simple forecast: peak focus times, dip windows, and when you’re likely to rebound.

Woman in perimenopause or menopause, to do list with pen, productivity

Hear what our community has to say

“Seeing the data gave me permission to adjust instead of beating myself up Joise turns that into a plan, telling me what to move out of today’s dip window and what to keep for my peak hours.”

Martha

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The Science

Joise uses a proprietary forecasting model that combines your wearable sleep signals with symptom logs to predict daily clarity peaks and dip windows.

It’s built from peer-reviewed sleep science + menopause research and refined to reflect real-life patterns. You get a simple forecast and next-step guidance — always optional, never medical advice.