In final testing · launching soon
Understand what your body is telling you.
Jaci helps you log perimenopause symptoms in seconds, see the pattern across the weeks, and bring a clear report to your appointment.
Coming soon for iPhone and Android
- No account to create
- Your entries stay on your phone
- No ads, no selling data
Some of the 47 symptoms you can log
- Hot Flashes
- Night Sweats
- Insomnia
- Fatigue
- Brain Fog
- Anxiety
- Mood Swings
- Irritability
- Headache
- Migraine
- Joint Pain
- Palpitations
- Dizziness
- Dry Eyes
- Bloating
- Dry Skin
- Back Pain
- Restless Sleep
What Jaci does
Built for the stretch where everything changes
Log a day in under ten seconds
47 symptoms by category — hot flashes, insomnia, brain fog, anxiety. Pin the ones that affect you most and log the day in two taps.
See the pattern, not just the day
A wellness score computed from what you logged, and a weekly or monthly history to see what keeps coming back.
Walk into appointments prepared
A PDF report with the frequency and intensity of your symptoms, for the period you choose, ready to share with your doctor.
Relief when you need it
The SOS button opens three short exercises — breathe, cool down, refocus — discreet enough to use at work.
Tips that follow what you log
Suggestions based on the symptoms you record most, written by people. They do not replace medical advice.
A reminder, if you want one
A daily reminder at the time you choose and a weekly recap on Sundays. Both switch off with a tap.
- symptoms to log
- 47
- to log your day
- <10s
- 30-second SOS exercises
- 3
- accounts to create
- 0
Inside
The app, as it is
Real screenshots from the version in testing.
Home
Diary
History
SOS
Profile
Privacy
Your health is not a product.
Your entries stay on your phone. No account, no server, no ads. Only what you choose to share ever leaves it.
It stays on your phone
Everything you log lives in a database on your device. There is no account to create.
It leaves only when you say so
Reports and backups leave through your phone’s share sheet, to wherever you choose. Backups can be encrypted with a password only you know.
What the app sends, said plainly
Only technical diagnostics about its own behaviour — startup times and crashes — with none of what you log.
How it works
A minute a day
- 101
Answer a few questions
Your name, the stage you think you are in and, if you like, cycle details. Skip what you don’t know.
- 202
Log how you feel
Today’s symptoms, how intense each one is, and a note if you feel like it.
- 303
Bring the history to your appointment
Export the PDF report and share it with the people who care for you.
Frequently asked questions
When will Jaci be available?
It is in final testing, for iPhone and Android. Leave your email and you will get one message on launch day.
How much does it cost?
Jaci is free at launch.
Do my entries go to a server?
No. They stay on your phone and there is no account. The app sends only technical diagnostics about its own behaviour, with none of what you log — the privacy policy says exactly what.
Does Jaci use artificial intelligence?
No. Tips are rules written by people, applied to the symptoms you log. That way you always know where a suggestion comes from.
Does Jaci replace my doctor?
No. Jaci is not a medical device and does not diagnose. It helps you understand your patterns and have better-informed conversations with the people who care for you.
Which languages does it support?
English, European Portuguese and Brazilian Portuguese, on iPhone and Android.
Another question? Get in touch
Be among the first to try it
One message on launch day. Nothing else.