Hypertension Notification Feature (HTNF) is an AI-enabled medical device from Apple Inc. that the U.S. FDA cleared through 510(k) K250507 on September 11, 2025. Its lead review panel is Cardiovascular and its primary product code is SFR (Hypertension Machine Learning-Based Notification Software).
See also FDA-cleared AI cardiovascular devices in 2025, all FDA AI clearances in 2025, top cardiovascular AI devices.
Key facts
| Submission number | K250507 |
|---|---|
| Pathway | 510(k) |
| Date of final decision | |
| Company (FDA list) | Apple Inc. |
| Lead review panel | Cardiovascular |
| Primary product code | SFR — Hypertension Machine Learning-Based Notification Software |
| Applicant (openFDA) | Apple, Inc. |
| Applicant location | Cupertino, CA, US |
| Device class | Class 2 |
| Regulation number | 21 CFR 870.2380 |
| Decision code | SESE |
| Submission type | Traditional |
Source: FDA AI-Enabled Medical Devices list and openFDA.
What this means
A 510(k) is a premarket submission showing the device is substantially equivalent to a legally marketed predicate device. A cleared 510(k) means FDA agreed with that equivalence. Hypertension Notification Feature (HTNF) went through this pathway (K250507).
openFDA lists it as a Class 2 device under 21 CFR 870.2380. Class II devices are moderate risk and are subject to general and special controls.
Product code SFR covers 1 device on the FDA AI list. By decision date, this device is #1 of 1 under that code. Apple Inc. has 5 AI-enabled devices on the list, and the Cardiovascular panel accounts for 154 in total.
Being on this list doesn't describe how well the device works clinically. Check the FDA record for its indications for use.