Tempdrop vs. Ava Fertility Tracker: Which is Better?

Growing up, many of us were not made to understand our fertility and menstrual cycles until it was finally time to get pregnant. Despite what you've been taught, or the myths you may have heard, it's time to make things clear: you are only fertile 6-7 days per cycle! So, if you're looking to achieve pregnancy, it is key to understand when those fertile days are.

The best way to understand your cycles is by tracking them with the fertility awareness method, which helps you understand your menstrual cycle and fertility window. Various fertility tracking methods include cervical fluid, basal body temperature, cervix positioning, and urinary hormones.

I use and teach the symptothermal method , which includes basal body temperature tracking and cervical fluid monitoring to confirm ovulation and identify high fertility days.

If you're interested in using basal body temperature to track your fertile window, you've likely already seen, there are so many basal body thermometers out there, including numerous wearable fertility monitors. These wearables can help you understand your fertility and serve as incredible tools for confirming ovulation, tracking general health, and achieving personal fertility goals.

So, I wanted to compare two of the devices I commonly get asked about, Tempdrop and the Ava Bracelet, in the hope that this will support you in choosing the best fertility tracker device to help you understand your cycle.

Tempdrop vs. Ava: Wearable Fertility Trackers Compared

Tempdrop Fertility Tracker

Tempdrop is a wearable basal body thermometer (BBT) sensor that contains multiple sensors that measure your core temperature continuously throughout the night. When synced to the app, Tempdrop’s patented algorithm learns your unique nightly and monthly temperature patterns, filtering out disturbances for accurate results.

Tempdrop uses continuous basal body temperature data collected while worn throughout the night to show temperature changes that indicate ovulation. This makes it especially helpful for people with irregular cycles, disrupted sleep, or fertility issues.

The Tempdrop app allows people to track key fertility indicators to increase their chances of conceiving.

» Read the full Tempdrop fertility tracker review

Yes, Tempdrop is both HSA and FSA eligible. HSA/FSA plans usually cover over-the-counter and basal body thermometers; however, be sure to check the details of your individual plan to see what exactly is covered.

Tempdrop is not FDA-approved for contraception or pregnancy prevention. It is an FDA-registered medical device, which means it meets regulatory standards for safety and manufacturing, but it is not classified as a diagnostic tool or a form of birth control.

Recent peer-reviewed research shows that Tempdrop accurately confirms ovulation by analyzing temperature patterns collected throughout the night. The study found Tempdrop’s ovulation detection accuracy exceeded that of other wearable fertility trackers, supporting its use as a reliable basal body thermometer for fertility awareness and cycle tracking.

Fertility Trackers to the Test: How Does Ava Work?

Ava Bracelet is a wearable device that collects continuous data while you sleep and uses this data to predict when you're fertile. Once synced with the corresponding app, this data, along with the user’s fertility status, is displayed in real-time.

Ava uses five physiological parameters to track ovulation and advance the understanding of the menstrual cycle. These five signals are resting pulse rate, breathing rate, skin perfusion, heart rate variability, and basal body temperature.

Although Ava provides fertility predictions based on multiple physiological signals, it does not replace interpreting your own fertility signs through fertility awareness.

Yes, Ava is both FSA and HSA eligible.

In many cases, HSA/FSA plans cover fertility monitors; however, be sure to check the details of your individual plan to see what is covered.

A small study conducted in 2021, focused on the Ava device and its effectiveness in identifying fertile and infertile days in the menstrual cycle, has shown the device to be accurate. If you're looking for the top fertility bracelets to get pregnant, Ava is a solid option.

Ava is not FDA-approved for contraception or pregnancy prevention. Like Tempdrop, it is an FDA-registered medical device, meaning it meets regulatory safety and manufacturing requirements but is not approved as a medical diagnostic tool or form of birth control.

» Learn more about the best BBT thermometers to track fertility

Day to Day Experience Using Tempdrop & Ava

Tempdrop BBT wearable tracker is worn over the axillary artery (just below the armpit) overnight while sleeping and synced with an app the next morning for data. To find the correct placement, flex your arm and find the soft area between the bicep and triceps. If you are curvier, wear it closer to your armpit over the thinnest skin.

Ava is worn on the wrist overnight while sleeping and synced with an app the next morning for data. To find the correct placement, it is worn over the wrist bone like a watch.

» Discover the best fertility and ovulation trackers for a 2025 baby

Both devices allow people to track both the data from the device as well as additional cycle/fertility-related information to make informed decisions about fertility. Ava is specifically geared toward those who desire pregnancy only.

Personally, I like that Tempdrop is fitting for those with any type of cycle and any type of fertility or health goal, which Ava is not. I also strongly encourage people to interpret their own fertility rather than relying on a device to tell them when they are fertile and when they are not—Tempdrop allows you to leave predictions off and trust your own knowing!

For people with irregular periods, Tempdrop is often the better fertility tracker. Because it filters out temperature disturbances and focuses on long-term trends, Tempdrop works well even when sleep schedules or hormone levels vary. Ava is best suited for people with regular cycles who are actively trying to conceive.

Winner: Tempdrop

Tempdrop pricing starts at $189, with an extended 2-year warranty and 12-month return window available for $25. Premium app subscription starts at $48/yr USD.

Ava pricing starts at $279 and goes up to $359 if you want the premium package, including a full refund if you're not pregnant within 6 months.

For me, the best wearable ovulation tracker is Tempdrop, for myself and my clients. I prefer a device that is suitable for all stages and current health and fertility goals and one that allows people to use their own body literacy.



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