Natural Cycles Lawsuit 2026: Data Privacy Claims, Eligibility & Aeroflow Updates
Quick Answer
- Is it legit: Yes. Natural Cycles faces a federal class action filed December 4, 2025, over alleged data sharing.
- How much: Not yet determined. No settlement fund exists in either case.
- Key deadline: None set. Watch the official court dockets for updates.
A federal class action claims Natural Cycles shared users’ reproductive health data with third parties without consent. The lawsuit, filed December 4, 2025, in the Northern District of California, names NaturalCycles USA Corp. and NaturalCycles Nordic AB as defendants .
You may be affected if you used the Natural Cycles app in California and entered data about your menstrual cycle, pregnancy status, or sexual activity. No money is available yet, and no claim deadline exists because neither case has settled.
This article covers what’s confirmed about the Natural Cycles lawsuit, the separate Aeroflow billing fraud case, who might qualify for each, and why you should ignore anyone promising quick payouts. One detail stands out: the Natural Cycles app markets itself as a privacy-protective FDA-cleared medical device, which is exactly why the data-sharing allegations matter .
The Facts
| Case | S.A., et al. v. NaturalCycles USA Corp., et al. |
| Status | Filed December 4, 2025; active litigation |
| Fund Size | Not yet confirmed (no settlement) |
| Est. Per Person | Not yet determined |
| Claim Deadline | TBD, watch official court dockets |
| Administrator | Not yet appointed |
| Proof Needed | Not yet determined |
Is the Natural Cycles Lawsuit Legitimate?
Yes, the Natural Cycles lawsuit is a real federal class action, but it is not a settlement and no compensation is available to claim right now. Four anonymous plaintiffs filed the case on December 4, 2025, in the U.S. District Court for the Northern District of California .
The complaint alleges that Natural Cycles embedded tracking technologies from third parties including Mixpanel, AddShoppers, Google, and TikTok into its app. These tools allegedly captured users’ reproductive and sexual health data in real time and transmitted it to those third parties without consent .
Natural Cycles has disputed these claims. The company stated it does not “sell or share any fertility status data, period data, sexual activity data, medical condition data, or logged symptom or pregnancy data” .
The case remains in its early stages as of April 2026, with no class certification and no settlement discussions publicly disclosed .
How Much Could You Get from the Natural Cycles Data Privacy Lawsuit?
Not yet determined. No settlement fund exists, no payout tiers have been proposed, and the court has not certified a class.
Data privacy class actions typically take years to resolve. The Natural Cycles case was filed less than a year ago, and settlement discussions usually begin only after discovery advances .
Key Takeaway: There is no money available today from the Natural Cycles lawsuit. Any website promising a payout is ahead of the court record.
For context, data privacy settlements vary widely. Some recent cases have produced per-person payments under $50, while larger settlements in healthcare data breach cases have reached $100 to $500 per claimant. That range is illustrative only, not a prediction for this case.
What Is the Aeroflow Lawsuit About?
The Aeroflow lawsuit is a separate consumer fraud case accusing Aeroflow Health of billing irregularities related to durable medical equipment. The case is not connected to Natural Cycles, but both are tracked together because they involve medical consumer claims .
The Aeroflow case alleges billing fraud in the DME space. As of 2026, the lawsuit has progressed through filing and into discovery, with class certification pending .
Settlement negotiations are reportedly active, but no court-approved settlement exists. Claims filing has not opened .
The timeline for Aeroflow follows the standard class action pattern: preliminary approval, class notice, claims period, final approval, then distribution. None of those stages have occurred yet.
How Much Is the Aeroflow Settlement Amount?
Not yet determined. No official Aeroflow settlement amount has been confirmed because the case has not reached a final court-approved agreement .
If the case settles, individual payouts will depend on total fund size, the number of valid claims, and the tier structure set by the settlement agreement. Comparable DME billing cases have settled for ranges between $1 million and $30 million, with per-claimant payouts ranging from $25 to $500 depending on documentation and case scope .
| Case Type | Typical Settlement Range | Per-Claimant Range |
|---|---|---|
| Small DME billing class action | $1M to $5M | $25 to $150 |
| Mid-size healthcare fraud case | $5M to $30M | $75 to $500 |
| Large-scale insurance fraud case | $30M+ | $200 to $1,000+ |
These figures are illustrative based on similar litigation. The Aeroflow case could fall anywhere in that spectrum .
Reality Check: No one from a court or settlement administrator will text you about money from either the Natural Cycles or Aeroflow cases. Filing a claim is always free once a settlement exists. Third-party “claim helpers” charging upfront fees for cases that haven’t settled are unnecessary.
Who May Qualify for the Natural Cycles Class Action?
You may qualify for the Natural Cycles class action if you used the app in California and entered reproductive health information during the class period. The proposed class covers California users who entered data about menstrual cycles, pregnancy status, fertility goals, sexual activity, contraceptive use, or medical conditions .
The lead plaintiffs are identified by initials S.A., S.S., A.S., and M.F. to protect their privacy. They are suing for violations of the California Confidentiality of Medical Information Act and the California Invasion of Privacy Act .
If you used Natural Cycles outside California, you may not fall within the proposed class as currently defined. The complaint seeks to represent California users specifically.
No class has been certified yet, so no one is officially a class member at this point.
Who May Qualify for the Aeroflow Class Action?
You may qualify for the Aeroflow class action if you were billed by Aeroflow Health for durable medical equipment and believe the charges were improper. The case targets billing fraud allegations in the DME space .
The specific class definition has not been finalized. If a settlement is reached, the court will define which customers, which products, and which time period are covered .
Factors that could affect individual payouts include what Aeroflow allegedly overbilled your insurance, whether you paid out-of-pocket costs, and the strength of your documentation. Insurance explanation of benefits statements and receipts would be key evidence .
Named plaintiffs in class actions typically receive service awards on top of regular claims, often between $2,500 and $10,000. General class members receive standard payouts .
How Would You File a Claim If a Settlement Happens?
No claims process exists today for either case. If a settlement is reached, here’s how these processes typically work:
- Wait for court approval. A judge must preliminarily approve any settlement and certify a class.
- Watch for official notice. The settlement administrator would mail or email notice to identified class members.
- Confirm your eligibility. The notice would state which products, which time period, and which jurisdiction apply.
- Gather your records. Proof of app usage or billing statements would likely be required.
- Submit the claim form by the deadline. The deadline would be stated in the official notice.
- Wait for review and distribution. Claims are reviewed against company records before payment.
What Are the Key Dates in These Medical Privacy Lawsuits?
The timelines for both cases are early, and most dates remain expected rather than confirmed.
December 4, 2025: Natural Cycles class action filed in the Northern District of California .
Expected 2026: Natural Cycles defendants’ motion to dismiss. The case survived initial filing, but dismissal motions are standard .
2026 (ongoing): Aeroflow class certification pending; discovery ongoing; settlement negotiations reported as active but no agreement confirmed .
TBD: Class certification, summary judgment, settlement, or trial in both cases.
No claim deadlines exist because no settlement funds have been created.
What Are the Allegations Against Natural Cycles?
The Natural Cycles lawsuit alleges the app shared sensitive reproductive health data with third parties without proper consent. The plaintiffs claim Natural Cycles embedded tracking tools from Mixpanel, AddShoppers, Google, and TikTok that captured data in real time .
The data allegedly shared included pregnancy status, menstrual cycle details, fertility goals, sexual activity, contraceptive use, and medical conditions. The plaintiffs say Natural Cycles marketed itself as a privacy-protective FDA-cleared medical device while allowing this data transmission .
Natural Cycles responded that it does not sell or share the categories of data described in the complaint .
The case is before Judge William H. Orrick in the Northern District of California. The docket number is 3:25-cv-10421-WHO .
What Happens Next in These Medical Consumer Lawsuits?
The immediate next stage for Natural Cycles is the defendants’ response to the complaint. Motions to dismiss are expected and will shape whether the case proceeds.
Expected late 2026: Natural Cycles motion to dismiss and plaintiffs’ opposition. A ruling on whether the data-sharing claims survive would be significant.
Expected 2027: If the case proceeds, discovery begins. This is often when settlement discussions accelerate.
Expected 2027-2028: Class certification briefing and ruling in both cases.
TBD: Settlement, trial, or dismissal. No outcome is guaranteed.
Frequently Asked Questions
Is the Natural Cycles lawsuit a scam?
No. The lawsuit is a real federal court filing from December 2025. No money is available yet, and anyone claiming otherwise is misrepresenting the case status.
How much will I get from the Natural Cycles lawsuit?
Nothing is determined. There is no settlement fund, no payout formula, and no confirmed eligibility list.
What is the Aeroflow lawsuit about?
The Aeroflow lawsuit is a separate consumer fraud case alleging billing irregularities for durable medical equipment. No settlement exists yet.
Do I need to hire a lawyer to file a claim?
No claims process exists. If a settlement is reached, filing is typically free and doesn’t require a lawyer.
What is the deadline to file a claim?
No deadline exists because neither case has settled. Do not rely on dates shared on social media or by claims aggregators.
Which courts are handling these cases?
Natural Cycles is in the U.S. District Court for the Northern District of California. The Aeroflow case is in a separate federal district.
Has any settlement been reached?
No. Neither the Natural Cycles nor the Aeroflow case has reached a court-approved settlement as of September 2026.
Can I join a mass arbitration instead of a class action?
Natural Cycles users may have arbitration options depending on their terms of service. Mass arbitration differs from class actions in speed and structure .
What Should You Do Now?
If you used the Natural Cycles app and believe your data was shared, keep your subscription records and any account activity documentation. If you were billed by Aeroflow, gather your insurance explanation of benefits statements and receipts.
Do not pay anyone who promises to file a claim for you. Do not share personal information with social media accounts claiming to represent either case. The official court dockets are the only source of confirmed updates.
The single most important fact right now: no claim deadline exists, no settlement fund has been created, and no payout is available. That will remain true until a federal judge approves otherwise.
