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Repair Windows errors before they cause bigger problemsFix Now →Scan for outdated or missing drivers - takes under a minuteDriver Scan →Clear out junk files and repair common Windows errorsFree Scan →Short answer: Reporting in September 2022 identified Peter Thiel’s investment firm, Thiel Capital, as a backer of 28, a cycle-tracking and wellness app created by the founders of conservative women’s publication Evie Magazine. The investment does not prove that Thiel personally runs the app, that he directed its medical claims, or that 28 shares data with Palantir or law enforcement. The practical questions are narrower and more important: what method does 28 actually use, how reliable is it for avoiding pregnancy, and what happens to intimate reproductive information entered into a commercial app?
The original story is historical; there is no independently verified new August 2026 investment announcement in the available record. 28 remains listed in Apple’s U.S. App Store under 28 Wellness, LLC, with paid subscriptions and developer-supplied privacy disclosures.
What 28 is
28 has been marketed under names including 28, 28 by Evie and 28.co. It was created by Evie Magazine founders Brittany Hugoboom/Martinez and Gabriel Hugoboom. The product combines period and symptom logging with education about menstrual-cycle phases, nutrition, exercise and lifestyle.
That description covers several different products people often conflate:
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- Flexible Detection Area: Our advanced oral thermometer offers you the option to set the measurement area (mouth, armpit, or rectal) before use. This unique feature significantly enhances the accuracy of the results. Additionally, you can effortlessly switch between ℉ and ℃, providing you with maximum convenience.
- Large and Clear Screen: The color - reading display of the Boncare digital thermometer is designed to help you quickly and easily obtain temperature readings. The large, clear LCD display guarantees easy readability, whether it's day or night, ensuring a seamless user experience.
- Basal Body Thermometer for Ovulation: Use this basal thermometer to track your BBT charts and ovulation test results with your preferred app for family planning. Note it's manual for basal temperature as it doesn't support Bluetooth. Take temp right after waking, before any activity to avoid inaccuracies.
- Multifunctional and User Friendly: The health care thermometer is packed with a variety of useful features. It has a fever alarm to remind you if you're sick, a memory display to keep track of previous readings, a waterproof tip (to deal with daily cleaning), and an automatic shutdown function. All these characteristics make it an ideal thermometer for home use and a basal thermometer for women fertility.
- A period journal that records bleeding and symptoms.
- A wellness service that recommends content or routines by cycle phase.
- Fertility-awareness education that may help users identify fertile days.
- A contraceptive tool, which requires a validated method, clear instructions and a plan for fertile-day protection.
Cycle tracking alone does not establish that an app is a contraceptive. The key question is whether 28 identifies fertile days using recognized signs such as cervical mucus and basal body temperature, or mainly predicts dates from past cycles. The original 2022 reporting described a “cycle-based” wellness program and connected its messaging to opposition to hormonal contraception, but it did not establish that 28 is an FDA-cleared contraceptive application.
Apple’s current listing identifies the product as a Health & Fitness app from 28 Wellness, LLC (storefront wording may vary), rated 18+ and compatible with iOS 14.0 or later in the surfaced listing. It is free to download with paid subscription offers; displayed prices can vary by country, account and promotion, so the U.S. price should be checked in the U.S. App Store listing at signup.
What Thiel actually backed
A September 6, 2022 Vice report, later summarized by Futurism, said Thiel Capital was backing the company behind 28. That supports the precise formulation “Thiel Capital backed 28.” It does not establish:
- the investment amount;
- that Peter Thiel personally wrote or directed the check;
- that Thiel invested in Evie Magazine itself rather than the app company;
- that Thiel medically endorses 28’s recommendations; or
- that the investor has access to individual users’ health records.
No complete cap table or documented investment motive is supplied by the cited reporting. Concerns about a data-related rationale are therefore a reason to ask for evidence, not proof of what Thiel intended.
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- Track Your Ovulation Cycle: Use the free Premom App to effortlessly monitor your basal body temperature (BBT), supporting your natural family planning journey. Please note that this thermometer is NOT Bluetooth-enabled;however, you can easily scan and record your basal temperature directly into the Premom App. For the most accurate readings, take your temperature first thing in the morning before getting out of bed. This simple step ensures reliable results and keeps you on track with your cycle
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- Large Blue Backlit Screen: Easy to read in the dark and stores up to 30 temperature records. NOTE: Place the probe firmly under your tongue, keep your mouth closed, and avoid speaking, eating, drinking, or moving. Wait for two short beeps—measurement takes about 90 seconds.
- Waterproof and Flexible Tip: Easy to use and clean for added convenience.
- Soft Beeping Alarm: Signals when your reading is complete—no need to count time. Fever alert warns you of high temperatures.
Why Evie Magazine’s connection matters
Evie is not a neutral clinical institution. Its editorial identity has been associated with “traditional femininity” and culture-war positions. Reporting has criticized articles and commentary involving abortion, hormonal contraception, vaccines and transgender issues, with some claims characterized by critics as pseudoscientific or conspiratorial.
Those criticisms must be kept separate from the app. A contributor’s article is not automatically a medical claim made by 28, and an app recommendation is not disproved merely because its publisher has a political identity. The relevant test is whether a specific health claim is sourced, clinically plausible and presented with appropriate limits.
For example, the original coverage cited an Evie article about Argentina and abortion that it described as factually false. That is an attributed criticism of published material, not evidence that every feature of 28 is false or that the app has committed a crime.
What medical evidence says about fertility awareness
Fertility-awareness-based methods (FABMs) are medically recognized. The American College of Obstetricians and Gynecologists describes methods that use cycle timing and signs such as cervical mucus and basal body temperature to identify potentially fertile days.
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- Monitor your Ovulation Cycle with Premom: Use Premom App to track your BBT charting, Cover line and Ovulation test result for your natural family planning journey. NOTE: Take measurement immediately when you first awake in the morning before any activities because any activity may tend to increase your temperature which will cause inaccurate temperature measurement
- Clinical High Accuracy (± 0.05 ℃ / ± 0.09 ℉ ): Measures Basal Body Temperature (BBT) to 1/100th of a degree precision (e.g. 97.41 F) in Celsius or Fahrenheit. Measurement takes about 90 seconds, longer time than regular oral thermometer as it reads more precision
- Large Blue Screen with Backlit: Easy to read in the dark. Recall 30 temperature records in memory. NOTE: Ensure the thermometer probe is placed firmly underneath your tongue, and keep the mouth closed all the time during measuring. Breathe normally and do not speak, eat, drink or move during measuring. Hold the thermometer until you hear 2 short beeps which means your temperature is complete. It usually takes about 90 seconds to get your completed reading
- Waterproof and Flexible Tip: Waterproof and Flexible thermometer tip for easy to use and clean
- Soft Beeping Alarm: signals the completion of test. No need to count timer. Fever beeping alarm warns user the fever condition
| Use scenario | ACOG figures for FABMs | What it means for 28 |
|---|---|---|
| Perfect use | Fewer than 1–5 pregnancies per 100 users in the first year | These are method-specific figures for fertility-awareness methods generally, not a performance result for 28. |
| Typical use | Approximately 12–24 pregnancies per 100 users in the first year | Missed observations, incorrect interpretation and unprotected sex on fertile days can substantially change outcomes. |
The CDC treats fertility-awareness methods as a category that can include cycle monitoring, fertility signs and some FDA-cleared contraceptive software. That classification does not make every period calendar or wellness app FDA-cleared or clinically validated.
Why calendar predictions can fail
- Irregular or anovulatory cycles make date-based estimates less dependable.
- Postpartum recovery, breastfeeding and amenorrhea can change bleeding and ovulation patterns.
- Perimenopause, polycystic ovary syndrome, endometriosis, illness, stress, travel and medication changes can complicate interpretation.
- Recently stopping hormonal contraception can make early cycles difficult to interpret.
People trying to avoid pregnancy need explicit fertile-day instructions and a protection plan, such as abstinence or barrier contraception. FABMs do not protect against sexually transmitted infections.
Does 28 replace birth control?
There is no responsible blanket answer without the app’s current methodology and labeling. A cycle journal is not a contraceptive. A fertility-awareness program may be used for pregnancy avoidance only when it teaches a defined method, explains uncertainty and tells users what to do during fertile days.
The original reporting portrayed 28’s messaging as skeptical of hormonal birth control and suggested that users might be encouraged to move away from it. That political or editorial framing is different from proving that 28 itself guarantees contraception. Anyone considering stopping hormonal contraception should have an alternative plan and discuss the change with a qualified clinician, particularly with irregular cycles, postpartum status, PCOS, perimenopause or a strong need to avoid pregnancy.
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- Accurate Basal Thermometer for Ovulation Tracking. Easy@Home BBT for ovulation is a must-have for easily detecting your fertile window and tracking your ovulation day. The Premom app can chart your reading inputs and draw your BBT shift digitally by entering your basal body temperature manually. The basal thermometer does it all with ease whether you are trying to conceive (TTC), avoid pregnancy naturally, or just want to know your body better, the basal thermometer does it all with ease
- 1/100th Degree Precision: This 2-decimal digital thermometer provides precision at ±0.05℃ or ±0.10℉. Designed for oral use, it is suitable for women’s fertility tracking and fever monitoring in adults, infants, babies, and children. Please note: This thermometer is intended for oral use only and is not designed for underarm or rectal use. It includes a plastic storage case for easy portability and daily use.
- How to Use Digital Ovulation Thermometer: Please place the BBT thermometer under your tongue. For the most accurate result, take it right before you wake up in the morning or before doing any activities. When""℉"" or ""℃"" starts flashing with ""Lo"" on display, the fertility thermometer is then ready to use. The digital BBT only takes around 1 min to read the results. NOTE: ""Lo"" does not mean the battery low
- Memory Recall: Easy@Home basal thermometer for ovulation tracking has a flexible & waterproof tip. It has a gentle confirmation beep when testing is complete. Store the last measured temperature in memory. No need to worry about waking up your sleeping partner beside you either. Easy to clean by using alcohol or a damp cloth. Turn the fertility thermometer off when finished. NOTE: Pressing the ON/OFF button down for 2 seconds will switch the unit between ℉ and ℃
- We promise you will enjoy our quality and simplicity. Experienced customer service agents are available for any questions you may have. We are so confident that you will love the bbt thermometer for ovulation
How strong are the nutrition and hormone claims?
General advice to eat adequately, exercise safely and track symptoms may be reasonable. Stronger claims require stronger evidence. Statements that a precise diet or exercise routine for a particular cycle phase will “balance hormones,” reverse contraceptive side effects, improve fertility or treat disease should be traceable to accessible clinical research, not just coaching language or editorial content.
The 2022 coverage said the scientific basis of 28’s recommendations was unclear. That is a criticism of the evidence presented at the time, not proof that every recommendation is useless. Readers should look for named authors, peer-reviewed citations, study populations, outcomes and limitations. Advice from a clinician is not interchangeable with content from a magazine writer or wellness coach.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What data the app may collect
Menstrual and reproductive records can reveal periods, symptoms, sexual activity, contraception use, fertility status, pregnancy or miscarriage. Apple’s privacy label for 28 lists possible collection of contact information, identifiers, usage data and diagnostics linked to the user, while some location, identifier and usage data may be collected without being linked. These are developer-supplied disclosures, not an independent privacy audit.
Before signing up, read the developer’s privacy policy and terms. Check:
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- Clinically Accurate Basal Body Thermometer for Natural Family Planning — Use iProvens BBT to detect your ovulation pattern and pinpoint your fertile window. Special chip for accurate readings to 1/100th degree.
- Reading in 60 seconds, faster than any other BBT — The ovulation thermometer has a small tip that warms up quicker. Therefore it delivers an accurate reading of your real body temperature faster.
- Manually enter your temperature in any ovulation app — The iProven Basal Body Thermometer does not synchronize with an app, but you can manually enter your data in any ovulation app. Or print the chart and track your cycle on paper!
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- whether data is stored locally, in the cloud or both;
- which analytics, hosting or other third parties process it;
- whether health-platform integrations are optional;
- how long records are retained and whether backups remain after deletion;
- how to export and delete an account; and
- whether information may be used for advertising, personalization or cross-promotion.
Deleting an app does not necessarily delete an account, cloud backup, exported file or third-party copy. Review Apple Health or other integrations, avoid entering information you do not need, use a strong unique password and consider whether a shared phone or family account exposes notifications or records.
The post-Roe legal environment increases the stakes. A 2024 paper hosted by the Federal Trade Commission documents users’ concerns about period-app privacy and reproductive-data access. It does not show that 28 has sold data, given it to Palantir, or provided it to law enforcement. Those would require documentary evidence.
Separate the verified facts from speculation
| Claim | What the available evidence supports |
|---|---|
| “Peter Thiel backs the app” | Useful shorthand only when clarified: reporting identified Thiel Capital as a backer in 2022. |
| “28 is the rhythm method” | Not established without verifying the app’s actual current methodology. |
| “The app is dangerous” | Specify whether the concern is pregnancy risk, privacy, misinformation or political messaging. |
| “Thiel wants reproductive data” | A hypothesis or concern, not a documented motive. |
| “The app is pseudoscience” | Identify the particular unsupported claim and the evidence for the criticism. |
Who should be cautious
28 may be useful as a cycle journal or source of general education for someone comfortable with its politics, subscriptions and data practices. Extra caution is warranted for anyone who needs highly reliable pregnancy prevention, has irregular or medically complex cycles, is postpartum or breastfeeding, is changing contraception, or lives where pregnancy-related conduct may attract legal scrutiny.
Before relying on any app, ask whether it gives a defined fertility-awareness protocol, what it says to do on fertile days, whether it distinguishes symptom tracking from contraception, and whether its privacy controls match your risk tolerance. If the answer is unclear, treat it as a diary—not as birth control.
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