Coming Soon
Know what's coming before your ADHD does.
Rithim helps women understand how their ADHD changes across the month, so you can plan with your brain instead of blaming yourself.
Early access opens July. No spam, just launch updates.
Rithim helps women understand how their ADHD changes across the month, so you can plan with your brain instead of blaming yourself.
Early access opens July. No spam, just launch updates.
Does this sound familiar?
Your ADHD may feel completely different from one week to the next. Rithim helps you spot the patterns behind those shifts.
Rithim connects the dots.
The Missing Link
Hormones can influence dopamine, focus, mood, energy and emotional regulation. For women with ADHD, this can mean symptoms shift across the cycle, pregnancy, postpartum, perimenopause and menopause. Rithim helps you understand those rhythms in plain language.
How Rithim Helps
Track focus, energy, mood, anxiety and impulsivity, automatically mapped to your cycle phase.
Plain-language insights into what oestrogen, progesterone and dopamine may be doing to your brain.
Discover your power weeks, your harder weeks, and the days that need extra grace.
Notice whether your medication feels more or less effective at different times of the month.
Gentle phase-aware support each day. Not a to-do list -- a "be kind to your brain" list.
A Look Inside
A daily ADHD forecast, personalised to your cycle and life stage.
A daily read on focus, energy and mood, tuned to where you are in your cycle.
Plain-language notes on what your hormones may be doing to your brain this week.
Watch your power weeks and harder weeks take shape, cycle after cycle.
How It Works
Enter your last period start date. Rithim works out the rest.
Five sliders, 30 seconds. That's it.
Your symptoms mapped to your cycle. Finally, it makes sense.
Rithim Plus
Rithim tracks your cycle and symptoms, then tells you what to do about them. Start with a 1-month free trial.
YOUR TOOLKIT
ALSO INCLUDED
Meet the Founder
Clinical Psychologist. ADHD specialist. Woman with ADHD.
Rithim was created by Dr Deirdre Ryan, a Clinical Psychologist with specialist experience in ADHD assessment and support. It was built from both clinical knowledge and lived experience, for women who have spent too long blaming themselves for changes that were never their fault.
Join the WaitlistWhat early users are saying
"For the first time, I can see why some weeks feel so much harder."
"It helped me stop blaming myself."
"This explains what I wish I'd known years ago."
Illustrative reflections. We'll replace these with verified pilot feedback before launch.
Your Data, Your Rules
Your data is encrypted and never shared with third parties.
TLS in transit, AES-256 at rest. Bank-grade encryption.
Export or delete your data anytime. One tap. No hoops.
Join the Rithim waitlist for early access, launch updates and founding member offers.
No spam. No pressure. Just a heads up when Rithim launches.
Developer Preview