Where does Dew get my temperature and LH tests from?

Dew learns from the temperature shifts in Apple Health, if you let Dew read it, and from the LH tests you log. It reads both on your phone. Nothing is sent to a Dew server.

Are the gold fertile days a form of birth control?

No. The Journal's key says it plainly: fertile days are a rough guess. The shading shows which days are likelier, from your own cycles, not which days are safe.

What reaches you when I tap the heart on a note?

Only a count, never who. Writing back is a private letter to the two of us, and Dear us tells you plainly what reaches us with it. Your cycle and your days stay on your phone and in your own private iCloud.

Is Compare cycles free?

Compare cycles is part of Garden, Dew's paid tier (Dew+). Finding days in the Journal by one thing at a time is free for everyone; combining several at once is part of Garden.

What's new in Dew 1.4.3 — sharper dates and notes from us

Dates that land closer, fertile days you can see, and now and then, a note from the two of us.

Dew 1.4.3 is here. Since 1.4.0 we’ve shipped three smaller releases, one after the other. This is all of them in one place: 1.4.1, 1.4.2 and 1.4.3.

Sharper predictions

Dew now reads your LH tests and your temperature more carefully, so your dates land closer. From past cycles where a positive test or a temperature shift showed when you ovulated, Dew learns how long the second half of your cycle usually runs. Partway through a cycle, it uses that to narrow the window for your next period, and only once your own days have earned it. How Dew’s predictions work.

Your fertile days, shaded

In the Journal, your fertile days are shaded in gold, and the deeper the gold, the likelier that day. The deepest is the day before ovulation. The key under the month explains the shading, and says honestly that it’s a rough guess. What the fertile window is.

Notes from Abhi & Riri

Now and then, the two of us write a note to everyone who uses Dew. It shows once on Today. Leave a heart if it meant something to you, or write back privately. Past notes wait in Dear us, under “Our notes to you”.

We wrote back

When we answer a letter you sent us, our reply floats in over your tabs, so you never miss it. Tap it to read, or drag it out of the way.

Compare your cycles

With Garden, lay your cycles side by side and see what changed. Since 1.4.3 there are two ready ways in too: this cycle against your usual, and the same time last year.

Compare cycles

with Garden, from the Journal, You and Rhythm

Any cycles you pick

side by side: length, mood, sleep and more

This cycle vs your usual

this cycle drawn over your usual shape, with one calm line

Same time last year

this cycle beside the one that held this day a year ago

Find days in the Journal

Pick a part of your cycle, a feeling or a word, and the month shows only those days. Your own words count too.

And also in 1.4.1 to 1.4.3

Your own recovery key: choose a key for your lock, and if you forget your passcode it lets you set a new one straight away.
Text size: make Dew's words smaller or larger in Make it yours, in seven steps around your iPhone's own size.
Made for iPhone Duo: open it wide or half-fold it, and nothing you read or tap crosses the fold.
Dew at night, redrawn as a moonlit garden, and My day: light by day, night from the hour you choose.
Type your sleep and temperature in the log, in the units you pick.
“Will it be on that day?”: tap a day ahead in the Journal to see where it falls in your cycle and, when it's close to call, the chance your period will be on it.
Count pads, tampons or cups on your period days, and your doctor's summary shows the count.
A cycle much longer or shorter than your others now says what else changed in it, from your own days.
Anyone new to Dew now meets it over a first evening, beginning with a letter from the two of us.

Privacy stays the root

Your predictions, your fertile days and every comparison are worked out on your phone, from your own days, and kept there and in your own private iCloud. No account, no ads, no Dew server reading your data. By design.

Missing something? Open Dear us in Dew and tell us, or write to us here. Now you’ll see it the moment we write back.