Turn your Oura Ring data into a report your doctor can use.
Try it freeHow the Oura Ring became an essential tool for cycle syncing, pain prediction, and body literacy — straight from someone living it.
Inspired by Kendall Faith (@kendallfaithtoole) — whose honest, 551K-viewed review of the Oura Ring Generation 4 goes far deeper than specs and battery life. A lifestyle and beauty creator (73K followers) based in faith and daily inspiration, Kendall opens up about chronic ovarian cysts, coming off birth control after a decade, and how wearable data gave her something she didn't expect: peace of mind.
Watch Kendall's full review on TikTok →
Most wearable reviews follow a predictable arc: unboxing, step counts, sleep score screenshots, maybe a complaint about battery life. Useful, sure. But they tend to orbit the same narrow set of features, marketed primarily around fitness and productivity.
What's largely missing from the conversation is how wearables serve women's health — and specifically, how continuous biometric tracking can transform the relationship someone has with their menstrual cycle.
Kendall Faith's six-month review of the Oura Ring Generation 4 stands out precisely because it goes there. After more than a decade on hormonal birth control, she turned to the Oura Ring not for step counting or calorie tracking, but to understand her cycle for the first time as an adult. What she discovered along the way — including a method to anticipate painful ovarian cysts — makes a compelling case that cycle tracking may be the most underrated feature in the entire wearable space.
Before diving into Kendall's experience, it helps to understand what makes hardware-based cycle tracking fundamentally different from manually logging periods in an app.
Traditional cycle-tracking apps rely on user-reported data: when your period starts, when it ends, and maybe some symptom logging in between. They estimate ovulation using calendar math — typically assuming a 28-day cycle with ovulation around day 14. The problem is that cycles vary significantly between individuals, and even within the same person from month to month.
The Oura Ring takes a physiological approach. It continuously monitors skin temperature via an NTC (negative temperature coefficient) sensor on the underside of the ring. During the menstrual cycle, basal body temperature (BBT) follows a well-documented pattern: it dips slightly before ovulation and rises noticeably afterward, driven by the thermogenic effect of progesterone during the luteal phase.
Research supports this approach. A 2021 study published in Scientific Reports found that wearable-derived continuous temperature monitoring could detect the fertile window with high accuracy, outperforming calendar-based methods. The Oura Ring specifically uses nightly temperature deviations from a personal baseline to map cycle phases — follicular, ovulation, and luteal — without requiring users to remember to take their temperature every morning at the same time.
This is the distinction Kendall highlights: she had used cycle apps before, but they only told her where she was in her cycle. The Oura Ring showed her how her cycle affected everything else — her readiness, her sleep quality, her energy levels throughout the day.
In the Oura app, cycle tracking integrates with the broader health dashboard. On any given day, a user can see:
This layered view is what makes it powerful. Instead of treating menstruation as a standalone calendar event, the Oura Ring contextualizes it within the full picture of your physiology.
Kendall's story carries extra weight because of her context. She stopped taking hormonal birth control in December after being on it for over a decade. That's a significant transition — one that millions of women navigate, often with limited guidance on what to expect.
Hormonal contraceptives suppress the natural hormonal fluctuations that drive the menstrual cycle. When someone discontinues them, the body needs time to re-establish its own rhythm. Cycles can be irregular for months. Symptoms that were previously masked — including pain, mood changes, and energy fluctuations — can surface in unfamiliar patterns.
For Kendall, the Oura Ring served as a kind of biometric translator during this transition. Rather than guessing where she was in a cycle that was still finding its rhythm, she had continuous temperature data showing her body's actual patterns in near-real time.
This is worth emphasizing: she didn't buy the ring for fitness. She bought it specifically for cycle awareness, to understand her own biology well enough to make informed decisions for her family. The fitness and sleep tracking were bonuses.
The most striking part of Kendall's review — and the part that resonated with hundreds of thousands of viewers — is her disclosure about chronic ovarian cysts.
Kendall shares that she has not been diagnosed with PCOS or endometriosis; her doctors have ruled both out. What she does experience are recurring ovarian cysts that cause significant pain. It's a condition that, by her own account, has been a difficult and ongoing journey.
What she discovered through consistent Oura Ring tracking is a pattern: by monitoring her cycle data and understanding when ovulation occurs, she can roughly predict when a cyst is likely to develop and when the associated pain will hit.
This observation aligns with established gynecological understanding. Functional ovarian cysts — the most common type — are directly linked to the ovulatory process. Follicular cysts occur when a follicle doesn't release an egg and continues to grow. Corpus luteum cysts form after ovulation when the follicle seals off and fills with fluid. Both types are tied to specific phases of the menstrual cycle.
By accurately identifying her ovulation window through temperature data, Kendall is essentially mapping the timeframe during which cyst formation is most likely. She's clear that this doesn't reduce the pain or change her medical reality — but it gives her the ability to plan.
That sense of predictability, of knowing what's coming, is a form of agency that's easy to underestimate. For anyone managing a chronic pain condition, the difference between "this could happen any time" and "this will probably happen this week" is meaningful. It allows for practical adjustments: scheduling, workload management, communicating with partners and employers, and mentally preparing.
"It has given me a small sense of peace just to be able to predict things like that, even though it doesn't change the pain." — Kendall Faith
Beyond cycle tracking, Kendall highlights sleep as the feature she engages with most consistently. Her goal for the year was improving sleep quality and consistency, and the Oura Ring's nightly breakdown gave her specific, actionable insight.
The ring tracks total sleep time along with time spent in each sleep stage: light sleep, deep sleep, REM sleep, and periods of wakefulness. But the feature Kendall found most valuable was discovering her optimal sleep window — essentially, what time she should go to bed and wake up for her body to function at its best.
This aligns with research on chronotypes — the genetically influenced tendency toward being a morning person, evening person, or somewhere in between. A 2023 review in Sleep Medicine Reviews found that aligning sleep schedules with individual chronotypes was associated with better sleep quality, improved mood, and enhanced cognitive performance.
The Oura Ring doesn't explicitly label your chronotype, but by tracking sleep quality across different bedtimes, it surfaces the pattern. If you consistently get more deep sleep and higher sleep scores when you go to bed at 10:00 PM versus midnight, the data tells the story without needing a label.
Kendall notes this was something she never knew about herself before getting the ring, despite wearing an Apple Watch for four to five years prior. That's a telling comparison — and one worth unpacking.
Kendall used an Apple Watch for roughly four to five years before switching to the Oura Ring, and she feels notably more in tune with her body now. This isn't necessarily an indictment of the Apple Watch — it's a reflection of different design philosophies.
The Apple Watch is fundamentally a smartwatch that does health tracking. It excels at notifications, communication, and real-time workout metrics. The Oura Ring is fundamentally a health tracker that happens to be a ring. It has no screen, no notifications (beyond the app), and no real-time workout display.
This constraint is actually part of its value proposition for health-focused users. Without a screen demanding attention, the ring fades into the background. You wear it, sleep in it, and check the app when you're ready. The data is retrospective and reflective rather than interruptive.
For someone whose primary goal is body literacy — understanding sleep patterns, cycle phases, and recovery status — this passive approach can be more effective than a device that's constantly competing for attention.
Kendall's review earns credibility by not pretending the Oura Ring is perfect. Her primary criticism is activity tracking, specifically for CrossFit.
The ring's calorie burn estimates during high-intensity, barbell-based workouts don't match her perceived exertion. This is a known limitation — wrist- and finger-based optical heart rate sensors can struggle with activities involving tight gripping, heavy loads, and rapid changes in hand position. The ring may lose consistent contact with the skin or produce noisy heart rate data during movements like cleans, snatches, or pull-ups.
She also mentions the practical issue of barbell work scratching or damaging the ring, which she solves with silicone protective covers recommended by a friend. It works, but she acknowledges it's not ideal.
This is a fair trade-off assessment: if your primary goal is accurate real-time workout tracking for high-intensity functional fitness, a chest strap heart rate monitor paired with a sport watch will serve you better. If your primary goals are sleep, recovery, and cycle tracking — with activity as a general awareness metric — the ring's limitations in the gym are acceptable.
One of Kendall's most memorable Oura Ring moments came when the device notified her that her biometrics looked off — the day before she came down with what she describes as one of the worst illnesses she's experienced.
The ring predicted she'd run a fever. And sure enough, she did.
This early warning system works through the same temperature and HRV monitoring that powers cycle tracking. When your immune system activates, your resting body temperature rises subtly and your heart rate variability typically drops — often before you consciously feel symptoms. The Oura Ring detects these deviations from your personal baseline and flags them.
This capability gained scientific validation during the COVID-19 pandemic. The UCSF TemPredict study, which enrolled over 65,000 Oura Ring users, found that the ring's temperature data could flag the onset of febrile illness up to three days before users self-reported symptoms.
For Kendall, this feature sits alongside cycle tracking as evidence of the same underlying value: the ring knows her body's baseline well enough to notice when something shifts.
Kendall briefly mentions Oura Ring's tagging feature as a major pro. Tags allow users to log variables — caffeine intake, alcohol, stressful days, workouts, specific foods — and over time, the app surfaces correlations between these inputs and your biometric outputs.
For someone tracking their cycle and managing chronic cysts, this is particularly valuable. Tagging pain episodes, dietary changes, stress levels, and exercise types alongside cycle data creates a richer dataset for pattern recognition — both within the app and in conversation with healthcare providers.
Kendall's review illustrates something important about the evolving role of consumer wearables: at their best, they don't just track numbers. They teach you about your own body.
For women especially, this matters. Menstrual health has historically been under-researched and under-discussed in both medical and consumer technology contexts. The fact that a ring can help someone like Kendall — who spent a decade on hormonal contraception — learn the rhythms of her own cycle, anticipate painful episodes, and make informed family planning decisions represents a meaningful shift.
It's not a medical device. It's not a diagnostic tool. But as a data layer between lived experience and clinical conversations, it fills a gap that hasn't had a good solution until recently.
If you're already using an Oura Ring for cycle tracking, your ring is generating valuable health data every night. But seeing the full picture — especially trends across multiple cycles — can be hard in the app alone.
Simple Wearable Report connects to your Oura Ring and generates free, lab-style health reports that surface your sleep, HRV, temperature, and recovery trends in a clean, shareable format. It's the kind of summary you can bring to a doctor's appointment or review with a trainer — no medical degree required to read it.
Free, GDPR-compliant, and takes about two minutes to set up.
See your trends → simplewearablereport.com
Watch Kendall's full Oura Ring review: https://www.tiktok.com/@kendallfaithtoole/video/7516723268846423309
Your Oura Ring collects thousands of data points every night. Simple Wearable Report turns them into a personalized weekly briefing — what changed, what it means, and what to watch. It takes 2 minutes to connect and it's free.
Free tools that turn your Oura Ring data into something you can share and act on.