This page is about Plum Period Tracker & Diary, the iPhone app made by Sticky Rice Labs. There's an unrelated app on the App Store called Plum: Period & Cycle Tracker, and the two get mixed up. We make this Plum, so what follows is the maker's account. The gaps are in it too.
The short answer
Plum is a good pick if you and your friends want to see each other's periods. It's also a good pick if you want a simple tracker with no ads. It's the wrong pick if you need Android, Apple Health, a notes box or an app that keeps everything on your phone. None of those exist in Plum today.
What Plum does well
Groups of friends. One of you creates a group and sends the private invite link. Everyone who joins sees each other's period days and predicted days on one shared timeline. A group holds up to 100 people, each on their own iPhone, and groups come with the free app. Plum has no one-to-one mode, so a partner joins a group like anyone else. The details are on how groups work and what your group can see.
Quick logging. You log today from the Home screen and fix any past day on the calendar. Plum can track 27 things in four groups, and you pick which ones show up. Period and flow are always on. The full list is on what you can track.
Predictions for free. Plum predicts your next period, fertile window and ovulation, and it adjusts them as you log more cycles. None of that sits behind the subscription. How the predictions work explains the method.
Birth control. Plum knows seven methods and can remind you about the pill, patch, ring or shot. On a hormonal method it hides ovulation and the fertile window by default, because those would describe a cycle you aren't having. See birth control and reminders.
No ads. There are none in the app, and your data is never sold or used for advertising. If you're leaving Clue, you can bring your history over.
What Plum doesn't do
- There's no notes box. A day is a set of choices, not text.
- It doesn't sync with Apple Health, Oura, Garmin or any other tracker.
- It runs on iPhone only. There's no Android version, no iPad layout, no Apple Watch app and no widget.
- You can't export your data yet.
- It needs an account and a connection. Your data is stored encrypted on Plum's servers, not only on your phone.
- It isn't a medical device, and its predictions aren't contraception.
If keeping everything on your phone matters more to you than sharing, a local-only tracker will suit you better. Our comparison of period tracker apps includes one.
What's free and what's Premium
Logging, the calendar, predictions, reminders, birth control and groups come with the app. Plum Premium adds insights and the full tip articles, as a yearly plan with a free trial or a monthly one. The App Store shows the price for your country. What Premium includes has the rest.
