Step one · about a minute
Check in.
How is your brain weather today? Notice your mood, energy and focus. Tap, and you are done.
“How is your brain weather today?”
For years this has been behind a veil.
11 of 16
studies on how the cycle affects ADHD were published in 2025 or later. None before 2021. The science is only now catching up with what women have been saying.
5days
before a period, and the first days of it.
For some women, studies found this is when symptom control varies most.
Nobody told her it could be her cycle.
ADHD has mostly been studied and described without considering the menstrual cycle. Yet many women describe attention, mood and focus shifting across the month, and some find their usual medication seems to work less well in the days before their period.
Literature review of 16 publications · April 2026
One cycle, day by day
One month. Four seasons. One brain that changes with them.
OnVeil is a one-minute daily reflection that puts your focus, mood, sleep and medication next to your cycle. Scroll through a month to see how OnVeil can support you.
Begin on day 1Days 1–7 · Winter · Menstrual
The week that feels heavy.
You open OnVeil and answer a few questions: how is your brain weather today? Stormy. You tap it, notice your energy, and you are done. About a minute.
1 min
a day. That is the whole ask.
17%
of Winter check-ins log focus difficulty.
Brain weather
Stormy
Days 8–14 · Spring · Follicular
Your garden starts to grow.
Every reflection feeds your plant. Wildflower, Camellia, Orchid, Bonsai: watch your seed grow. The weather over it is yours; the season follows your cycle. A new seed with each cycle.
Winter
Menstrual
Spring
Follicular
Summer
Ovulatory
Autumn
Luteal
Same plant, five kinds of brain weather
Days 15–21 · Summer · Ovulatory
The brightest days.
In this example, Summer is when medication most often felt like it worked, and when focus difficulty was logged least. OnVeil does not tell you this in advance. It shows you, after enough complete cycles, what you logged.
72%
of Summer days: “my medication feels like it works.”
11%
of Summer check-ins log focus difficulty.
Brain weather
Bright
Days 22–28 · Autumn · Luteal
The week nobody explained.
Focus slips. Procrastination climbs. It is not you failing; it is a pattern. OnVeil turns insights into a one-page summary you can put in front of your clinician.
| Winter | Spring | Summer | Autumn | |
|---|---|---|---|---|
| Focus | 17% | 15% | 11% | 38% |
| Procrastination | 19% | 12% | 9% | 31% |
| Anxiety | 13% | 9% | 11% | 29% |
Day 28 · Your patterns
The same feelings, but now measured.
The cycle, with check-ins on top
Hormones move. So does your brain weather.
17%
Winter
Menstrual · 1–7
15%
Spring
Follicular · 8–14
11%
Summer
Ovulatory · 15–21
38%
Autumn
Luteal · 22–28
OestrogenA hormone made mainly by the ovaries. It helps the egg mature and builds the uterine lining.
ProgesteroneA hormone made by the ovary after ovulation. It keeps the uterine lining ready for a pregnancy.
LHLuteinising hormone, released by the brain. A sharp surge triggers the ovary to release an egg.
Your doseStays the same all month in this example, while hormones move around it.
Check-ins logging itHow often the chosen symptom was logged in each season.
Hormone curves are illustrative. Seasons group check-ins into four 7-day blocks, as in the app. Percentages are example data.
How it works
Four screens
Step two · every day
Watch your garden grow.
Your plant grows with every reflection. The weather over it is yours; the season follows your cycle.
“Growing toward Autumn”
Step three · after complete cycles
See your patterns.
How often focus, procrastination or anxiety show up in each phase. Rule-based, no predictions.
“Based on 2 complete cycles”
Step four · when you are ready
Bring it to your clinician.
A one-page summary of how your symptoms and medication change across the cycle. Evidence for a conversation, not a diagnosis.
“My medication feels different across my cycle.”
“Help me understand why my medication sometimes stops working, and help me talk to my clinician about it without being dismissed.”
Woman with ADHD, research interview, 2026
Beta · January 2027 · Free
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