Logging in two taps
Open the app and tap “Period started.” Flow, pain, symptoms and notes are there if you turn them on, and out of sight if you don’t.
1
→ Boring Period Tracker
A period tracker. That's it.
Log your period, see when the next one’s due, and make a one-page summary for your doctor.
It isn't in the app stores yet.
Friday, October 9
Day 9
Next period around Oct 28
Period started.
S 3
S 4
M 5
T 6
W 7
T 8
F 9
TodayCalendarReportSettings
What it does
Predictions from your own cycle
The next period is estimated from the cycles you’ve logged. It never assumes 28 days, and you can turn predictions off.
‹ October 2026 › +
Day 9 · next around Oct 28
MTWTFSS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Period Predicted Fertile window (estimate) Spotting
A one-page doctor report
Cycle lengths, period lengths and whatever else you chose to log, on a single page. It’s always black and gray, so it prints and faxes cleanly.
Menstrual cycle summary
- Last period start
- Oct 1, 2026
- Cycle length
- 27 days · range 26–31 · 6 cycles
- Period length
- 5 days · range 4–6 · 7 periods
| Start | Period | Cycle | Heaviest flow | Pain |
|---|---|---|---|---|
| Oct 1 | 5 | — | Heavy | 6 |
| Sep 4 | 5 | 27 | Heavy | 7 |
| Aug 6 | 4 | 29 | Medium | 4 |
| Jul 10 | 6 | 27 | Heavy | 6 |
| Jun 14 | 5 | 26 | Medium | 5 |
| May 18 | 4 | 27 | Light | 3 |
| Apr 17 | 5 | 31 | Heavy | 6 |
Spotting between periods
2 days: Jun 30, Oct 7
Symptoms
Cramps in 6 of 7 periods · Fatigue in 4 of 7 · Headache in 3 of 7
Pain
Median highest 6 · Highest 7
Self-reported data. Predictions not included. · Boring Period Tracker
Optional encrypted sync
Sync between your devices with a random key instead of an email address. Everything is encrypted on your phone first, so the server can’t read it.
Your sync key
K7QM-2XPF-9D3T-WB6R-HN4C-Y8JE-5V0
What the server sees
01 9f 3a c4 7e 5b d2 08 e1 6c 3f a9 74 0b c8 52 …
What it doesn't do
- No notifications.
- No feed.
- No articles.
- No ads.
- No tracking.
- No account needed.
- No selling your data.
It tracks your period. That covers it.
Privacy, in a few lines
- Your data stays on your phone.
- Sync is end-to-end encrypted. The server stores something it can’t read.
- We don’t know your email, because we never ask for it.
The privacy policy is longer, but not by much.
Playground
It can be less boring, if you insist. Try the real app in your browser, with made-up data.