CHALLENGE
Know Your Hard Week
Before your period, write how you feel once a day. Tideline marks each day so you can see that week.
Tideline Period & PMDD Tracker
PMS, mood & cycle diary
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
WRITE ONE SENTENCE A DAY
Type or say how today went, the way you would text a friend. Tideline picks out the mood and the symptoms and files them under the right cycle day. You can tap through a list instead if you prefer. It takes under a minute, which matters on the days when a minute is all you have.
If a week or two of every month feels like it belongs to someone else, you have probably tried to explain that to a doctor from memory. And you have probably been told it sounds like normal PMS.
Doctors who assess PMDD do not ask how you remember feeling. They ask for daily notes kept across at least two cycles, written as you went. That is the one thing almost nobody arrives with. Tideline is the easy way to keep them.
SEE YOUR PATTERN
• Your calendar, with your period days, your fertile week and the days you wrote something
• A countdown to your next period and to your harder days
• What to expect today, and how your hormones usually move across a cycle
• Tips chosen from what you actually logged: things to do, to eat and to try
BRING IT TO YOUR APPOINTMENT — TIDELINE PLUS
After two cycles, Tideline Plus turns your notes into a report a doctor can read in two minutes. It shows every day at a glance, compares the week before each period with the week after, symptom by symptom, and quotes your own words from the hardest days. Save it as a PDF and take it with you.
HELP YOUR PARTNER UNDERSTAND
Send your partner a link. Their app shows where you are in your cycle and gives them a heads-up before your harder days, with your own notes on what helps. They never see what you write.
WHO IT IS FOR
• You have been told it is just PMS, and you know that it is not
• The week before your period does not feel like the rest of your life
• Someone close to you thinks you are being difficult
• You have sat in an appointment and not been able to explain it
• You want to know whether the treatment you started is doing anything
PRIVATE BY DESIGN
• What you log stays on your phone. There is no account and no server of ours.
• No ads and no tracking.
• Speaking an entry is turned into text on your phone. The audio is never sent anywhere.
• Export your record whenever you like, free. Delete everything with one tap.
• Bring your period dates in from Apple Health. Tideline only reads them and never writes.
FREE, AND TIDELINE PLUS
Logging, your calendar and history, reminders, the Apple Health import, the export and two tips a day are free and stay free. Tideline Plus adds tips chosen from your own logs, what to expect each day, your hormone pattern, every article, the partner heads-up and the doctor's report as a PDF.
Plus is an auto-renewing subscription. The plans on offer, any free month, and the exact date and amount of each charge are shown in the app before you agree to anything. Payment is charged to your Apple ID. The subscription renews unless it is cancelled at least 24 hours before the current period ends. You manage and cancel it in Settings, under your name, in Subscriptions.
Some months you will write a sentence and think nothing of it. Two cycles later it is evidence.
Tideline keeps a record. It is for tracking and for bringing to an appointment. It does not diagnose, treat or prevent any condition, it is not birth control, and it does not replace a doctor.
Terms of use: https://benthepythondev00.github.io/tideline-legal/terms.html
Privacy policy: https://benthepythondev00.github.io/tideline-legal/privacy.html
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Give a friend a free week of Tideline Plus, and small fixes.
Subscriptions
The developer, Ben Jonas Goedeke, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
- User Content
- Usage Data
- Other Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Ben Jonas Goedeke
- Size
- 60.1 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 16.4 or later.
- iPhone
Requires iOS 16.4 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 2 more
- English, German, Spanish
- Age Rating
16+
- 16+
- Frequent
Medical Treatment information
Infrequent
Mature or Suggestive Themes
Alcohol, Tobacco, Drug Use or References
Contains
Health or Wellness Topics
- In-App Purchases
Yes
- Tideline Plus (yearly) $49.99
- Tideline Plus (yearly) $49.99
- Tideline Plus (weekly) $5.99
- Tideline Plus (weekly) $5.99
- Tideline Plus (monthly) $12.99
- Tideline Plus (yearly) $49.99
- Tideline Plus (yearly) $49.99
- Tideline Plus (monthly) $12.99
- Copyright
- © 2026 Ben Jonas Goedeke