How do I start a new cycle?

Lily will automatically start the first cycle for you when you enter the first data. The first day that has any data associated with it will automatically be considered to be the first day of your first cycle. So if you enter data for any day that came before that, Lily will automatically extent your first cycle into the past to include the newly entered data.

Although the beginning of your first cycle is determined by the first day that has any data, all following cycles need to be started manually. To do so, you can either tap on “Start a new cycle today” in the Period menu on the day your period started, or by using 'Edit Your Cycles' in Lily's 'Your Cycles' section.

We did it this way because there is no error-proof method to distinguish between a mid-cycle bleeding and a real period bleeding, and we don’t want Lily to start new cycles automatically that aren’t in fact new cycles. You yourself are far better in deciding if the bleeding you noticed is in fact a “real” menstrual bleeding and your body is in fact beginning a new cycle, or if it is simply a mid-cycle bleeding.

How can I enter data in the past?

The first day that has any data associated with it will automatically be considered by Lily to be the first day of your first cycle. So if you enter data for any day that came before that, Lily will automatically extent your first cycle into the past to include the newly entered data.

To go back in time to enter data for days in the past, you can simply use the calendar at the bottom of Lily’s 'Your Data' menu. For bigger jumps further back in time, you can use the main calendar as well. Everything you enter before the current first day will essentially extend the first cycle into the past to include the newly entered data.

Once you entered your past data, you still need to make sure that previous cycles are separated properly into multiple cycles. You can do this by either tapping 'Start a new cycle today' in the 'Period' menu on every first day of any of your cycles, or by editing your cycles directly using the graph's edit more that can be accessed by tapping 'Edit Your Cycles' in Lily's 'Your Cycles' section.

Where do I see if (and when) I have ovulated?

Technically speaking, Lily can't tell you the exact day of ovulation. No one really can, since the ovulation can only be measured indirectly by looking at your symptoms. What Lily can do is to tell you, with relatively high certainty, when you most likely should have ovulated. This might sound like pointless semantics, but it is actually an important thing to understand with sympto-thermal cycle evaluation in general: The goal is not to find your day of ovulation, but to figure out how fertile you are — which helps both, women who are trying to conceive, as well as those who would like to avoid a pregnancy.

When you take a look at Lily's graph or calendar, you should see a colored bar for each day of your cycle. These colors do not only tell you if you can consider yourself infertile or not, but also just how fertile you can consider yourself to be at any given day. A dark blue day means that you are most likely infertile, while a light blue day means that you should be fertile.

If you look closely you should notice that some days are marked with a varying shade of pink instead, in fact they're getting pinker towards the end of your cycle's fertile phase, and then get a bit bluer again right before the dark blue phase of infertility begins. The stronger this pink gets, the more fertile you should be, and the day with the strongest shade of pink marks the day of your cycle when you are at your most fertile. This is also the day around which you most likely ovulated.

For those using a sympto-thermal evaluation method: Note that you can only see the dark blue infertile phase and the pink days for cycles that Lily was actually able to evaluate. You can check if Lily evaluated the cycle in question successfully by either looking at the graph (which should show a yellow coverline), or by looking at that cycle's details in the 'Your Cycles' section. This section can also help you figure out why Lily wasn't able to evaluate the cycle, as well as tips and tricks about what you can do to improve Lily's accuracy.

I have charted more than one cycle, but Lily still doesn't predict future cycles!

If you're using Lily's averages-based evaluation method, this shouldn't be a problem. Once you have one completed cycle Lily will show you your future cycles in the graph and calendar. If you're using one of Lily's sympto-thermal evaluation methods, however, this cycle needs to be evaluated successfully.

You can check if Lily evaluated the cycles you charted successfully by either looking at the graph (which should show a yellow coverline for each cycle that it was able to evaluate), or by looking at each of your cycles' details in the 'Your Cycles' section. This section can also help you figure out why Lily wasn't able to evaluate each given cycle, as well as tips and tricks about what you can do to improve Lily's accuracy.

Once you have at least one successfully evaluated cycle while using Lily's sympto-thermal evaluation methods, Lily will show you your future cycles in the graph and calendar.

I am pregnant. What now?

First, the most important part: Congratulations! :)

Once you have received a positive pregnancy test result, you should enter it in Lily's 'Pregnancy Test' tracking menu.

The 'Pregnancy Test' menu is not only used to track positive or negative pregnancy tests you might take, but also serves as the "switch" to tell Lily that you are, in fact, pregnant.
If you select a positive pregnancy test and Lily was able to determine the date of your ovulation for that cycle, the app will calculate your most likely date of delivery and display the result in the graph, the calendar, as well as in the summary section at the very top of the 'Your Data' menu. Lily will also adjust the prediction of your future cycles accordingly.

The day you give birth to your child ends this pregnancy cycle. The first cycle following birth lasts from the day of birth until the last day prior to your first period after you experienced a temperature shift. For some women, this cycle can last for months, sometimes even more than a year, while others might see regular cycles with evaluated temperature shifts relatively soon after giving birth.
All bleedings you experience during this time should be considered mid-cycle bleedings and be ignored, a new cycle should only be started on the first day of your period after Lily has found the first temperature shift since you gave birth.

Lily says I'm pregnant, but I'm sure I'm not! How should I react?

Don't panic, this can happen and doesn't necessarily mean anything.

Lily can not know for sure if you are pregnant or not, it can only give you a hint that there is a slight chance you might be pregnant when you have yet to see the onset of your next period 17 days after your temperature shift (marked by the first pink temperature dot in the graph) when using one of Lily's sympto-thermal evaluation methods, or 17 days after your most fertile day (the day marked with the strongest shade of pink) when you are using the averages-based cycle evaluation. That day is marked by a green exclamation mark in the graph.

When that day passes and your next cycle still hasn't started, Lily will tell you that you might be pregnant. If you suspect that Lily might be right, you can do a home pregnancy test or consult your physician. Once you are certain that you are indeed pregnant, you should mark the positive test result in the 'Pregnancy Test' menu, which will make this cycle become a pregnancy cycle and Lily will calculate the due date for you.
If you are, on the other hand, sure that you are not pregnant, you can simply ignore Lily's comment and continue charting.
Don't forget to start a new cycle once your next period sets in!

Sympto-Thermal Evaluation

Do I really need to chart my temperature?

Yes, you do. At least when you're using one of Lily's symptom-based evaluation methods.

For both of Lily's sympto-thermal cycle evaluation methods, your basal body temperature (BBT) is the single most important value Lily can work with. Both methods were designed to rely on these temperatures, and they simply don't work without them.

You should also avoid to skip taking temperatures if you want Lily to be as accurate as possible, especially if you want to use Lily as a method of contraception.

> Read more about how to take your temperature…

What thermometer should I use?

Use a digital or an analog thermometer. It should be labeled for the use of taking the Basal Body Temperature (BBT). Do not use an ear thermometer!

For readings in Celsius, the digital thermometer needs two decimal places, for Fahrenheit, one decimal will suffice.

> Read more about how to take your temperature…

Do you support any of these new connected thermometer devices?

We are very excited about a number of these new wireless thermometers that automatically synchronize your temperatures, and we want to support some of them as soon as we can.

Unfortunately, none of the ones we looked at shares our respect for the privacy of your data, meaning that their maker's privacy policies are mostly incompatible with our own. Sadly, the privacy and protection of your data is not an industry standard any more. This is the main reason why we do not (yet) offer support for any of them.

But we have not given up hope quite yet!

Do I really have to round my temperatures?

Yes and no. Lily will still evaluate your cycles when you do not round your temperatures, but the results will be different, less accurate even.

While may sound counter-intuitive at first (How can a rounded temperature be more accurate than the "real" one I measured?), both sympto-thermal evaluation methods Lily uses rely on certain thresholds for the temperature gain to be met before a cycle can be regarded successfully evaluated.

When not rounding your temperatures, it can happen that your temperature gain would technically fail to meet such a threshold by just a tiny bit, while it would successfully surpass that threshold if the temperatures were rounded. This is by design, and will lead to a higher number of evaluated cycles.

> Read more about how to take your temperature…

When exactly do I exclude my temperature from evaluation?

The first part of the decision if a temperature should be excluded from evaluation is easy: Only exclude temperatures that are unnaturally high, never exclude one that is lower than usual.

The second part is a bit more complicated, because it requires a bit of experience and knowledge about your body: Look at all the measurements you took in the past and see if you can find temperatures that stand out as unnaturally high, look for an inexplicable spike in your temperature graph. If you can find any, take a look at the interferences you tracked. Did you consume alcohol the day before when you usually don't? Were you unusually stressed? Try to find a pattern of interferences that may have lead to the higher-than-usual temperature measurement. After a while you will learn how your body reacts to certain influences, and once you know that partying, for example, always leads to a higher temperature the next morning, you can exclude that higher temperature to avoid any negative impact this temperature might have on your evaluations.

Do not, however, exclude any temperatures whenever you don't know why they are higher, or you might keep Lily from evaluating your cycles successfully.

Why does Lily say I'm fertile all the time?

Lily can only tell you your infertile days for cycles that were successfully evaluated, because only with those cycles Lily can actually be sure when you have ovulated, and if you ovulated at all. Without this information, Lily can't calculate your infertile days, at least not accurately enough so that you can rely on the result if you are trying to avoid a pregnancy. That is why Lily is telling you that you are "potentially fertile" your whole cycle long when it can't be sure that you aren't.

If you see infertile phases towards the end of your cycles, but you never see any infertile phases at the beginning of them, even though the cycle that came before that was successfully evaluated and shows an infertile phase at its end, check the evaluation settings, you might accidentally have enabled Lily's menopause mode. You should only have this feature enabled if you are, in fact, in perimenopause.

Lily doesn't evaluate my cycles, what's going on?

There are a number of reasons why Lily was unable to evaluate your cycles: An insufficient amount of temperatures is a common reason, expecting results too early in the cycle is another. Also keep in mind that, sometimes, a cycle simply cannot be evaluated, either because the temperature rise wasn't strong enough to be discernible, or because you simply didn't ovulate.

The cycle explanation screens in Lily's 'Your Cycles' section can give you a list of tips and tricks that should help you to get better results.

You might also want to take a look at the 'Symptoms' section of this help document to get an overview of the rules that Lily applies to your cycles:

> How it Works…

I see a coverline and my cycle has been evaluated, but Lily doesn't mark the infertile phase at the end of the cycle. Why?

Lily is still waiting for your Peak Day to happen.

The Peak Day is the day of your cycle with the most fertile cervical fluid quality. Lily will look for your Peak Day on every cycle that you tracked your cervical fluid quality at least once, but not on those where you haven't.

This means that if you want to track your cervical fluid quality for a cycle, you should do so daily. That way Lily won't miss your Peak Day and will correctly show you the infertile phase towards the end of your cycle.

You can see of Lily is still waiting for your cervical fluid entries by looking at the graph: Lily will display a blue question mark for every day where your cervical fluid data is missing.

If you have access to all of Lily's features, you can use Lily's smart cervical fluid reminders to let Lily remind you to enter your cervical fluid data on days that Lily still needs it.

Can I evaluate my cycles manually?

Unfortunately not.

Lily's whole purpose is to get rid of the hassle of having to do the evaluation manually, and to help you avoid calculation errors that can sometimes happen when using pen and paper.


My reminders won't work!

First, make sure you have your reminders enabled in Lily's 'Reminders' section.

If you're still not seeing any reminders, go to your device's 'Settings' application and tap on 'Notifications'. Now scroll down a bit until you find Lily, and tap on it.
On the following screen make sure you have 'Allow Notifications' enabled. Next, make sure you have set 'Sounds' to On, if you want Lily to be able to play the reminder sound, and enable 'Show on Lock Screen' if you want Lily's reminders to appear on your device's lock screen. Lastly, select either 'Banners' or 'Alerts' to make sure that Lily can display reminders while your device is unlocked.

Backup? Restore?

Use iCloud or iTunes to make regular backups of your device to avoid any loss of data.

If you don't currently use iCloud to make daily automated backups of your device's data, we strongly suggest that you start doing so — not just to protect Lily's cycle data from disappearing one day, but all of the data you have collected on your device.

Please consult Apple's iCloud and iTunes documentation if you need further assistance on how to make backups or how to restore your device from a backup.

I have a new device, how can I move my data to it?

The recommended way to move your data from an old device to a new one is to restore your most recent backup of your old device to your new one. This will move all of your apps and data to the new device, not just Lily's. You can find more information on how to do this in Apple's documentation for iCloud and iTunes.

Synchronization between devices?

Unfortunately, Lily can not synchronize your cycles between devices yet. But we are working on it.

What about synchronizing with the Health app?

Lily does not support the Health app at this point.

Apart from some technical issues, there are also a number of conceptual issues that we need to find solutions for before we can offer this support.
Here is one example: The Health app allows you to enter as many temperatures for a day as you like, while Lily allows you to enter just one, your daily wake-up temperature. Automatically synchronizing your temperatures with the Health app would mean that Lily would need an absolutely error-proof way to decide which temperature to use for Lily's cycle evaluations. Simply taking the first temperature of a day might work for some, but not for those who have devices that take their body temperature hourly. Selecting the wrong temperatures will lead to false results, which is absolutely not an option for those who are using Lily as a way to avoid a pregnancy.

To make the long story short: We do plan to offer support for the Health app in the future, but only after we have worked out issues like the one mentioned above. Our priority is Lily's accuracy and reliability, and we want to make absolutely sure that you can continue to rely on Lily and trust Lily its results.

I have payed for an older version of Lily, and now I have to pay again? What?!

If you have bought a version of Lily 1.x or Lily Pro (Lily 2.x) in the past, you are eligible to receive access to Lily's full set of features without having to pay again. In fact, Lily should have unlocked them for you automatically.

In case this didn't already happen automatically, you should attempt to refresh the AppStore receipt that is stored on your device. This receipt contains the information Lily needs to determine your eligibility. To refresh this receipt, tap on any menu item that has a lock symbol next to it to call up Lily's feature purchase screen. Scroll down all the way until you find a button labeled 'Restore Purchases', and tap on it.
Please make sure that you use the same Apple ID that you used for your original purchase of Lily, otherwise this will not work.

(Please note that buyers of Lily Cal are excluded from this.)

How do I get access to all of Lily's features again?

To restore your purchase, tap on any menu item that has a lock symbol next to it to call up Lily's feature purchase screen. Scroll down all the way until you find a button labeled 'Restore Purchases', and tap on it.

Please make sure that you use the same Apple ID that you used for your original purchase, otherwise this will not work.

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