Erection tracking device

The TechRing erection tracking device

Last updated: November 2026

What does an erection tracking device actually measure?

FirmTech’s TechRing, an erection tracking device worn at the base of the penis, measures erection firmness, quality and duration during sex, and the count, strength and length of nighttime erections while you sleep.

It costs $275, works with a free app on iPhone and Android, and doubles as a performance ring: the same gentle pressure that supports firmer, longer erections holds the sensors in place. FirmTech calls it the world’s first smart wearable for the penis.

New to tracking? Start with our guide to nighttime erections tracking and choosing a ring.

Inside the ring

How does the TechRing track erections?

Definition

What the FirmTech TechRing is

The TechRing is a soft, doctor-designed ring with built-in medical-grade sensors. Like FirmTech’s other rings, it uses an anatomical peno-scrotal design: one loop sits behind the testicles and the other around the base of the penis, closed with a patented hook-and-loop strap that adjusts to your size.

It is made of medical-grade elastomer, phthalate- and latex-free, and splashproof. FirmTech designed it with urologists and says it is designed and studied for overnight wear of up to 12 hours. It fits up to 5.5 inches of erect girth, which FirmTech says covers 95% of men.

What it records

During sex, and while you sleep

Worn during sex, the TechRing records firmness and duration for every session, and FirmTech’s app also shows a quality reading. Worn overnight, it counts your nighttime erections and records how strong and how long each one was.

The app rolls every session and night into an Erectile Fitness Score from 0 to 100. You can log sleep, drinks, workouts and medication, and see which of them shifts your score. One TechRing owner wrote that the app shows results from influences “such as how many drinks you had that night and medication.”

Overnight

What does a tracked night look like?

A tracked night shows how many erections you had, how long they lasted in total and how strong they were.

FirmTech states healthy men have 3 to 5 erections a night during sleep, and that they happen without arousal, stress or nerves. That makes them a read of physical blood flow. The TechRing tracks on its own; you do nothing while you sleep.

In the morning, hold the button for 3 seconds, put the ring on its charger, and connect in the app to sync. FirmTech suggests wearing it once a week for a clearer picture over time, and partner clinics can view your data between visits only with your permission.

events

71m

total duration

strength

Illustration based on the example night FirmTech shows for the TechRing: 4 events, 71 minutes of total duration and a strength reading of 82. Your own nights will differ.

Setup

How do I set up the TechRing?

Step 1
Charge
Use the included USB cable. A full charge takes 2 to 4 hours and lasts about 12 hours.
Step 2
Pair
Install the free FirmTech app, turn on Bluetooth, and follow the prompts to connect.
Step 3
Wear
Put it on soft, wear it during sex or to bed, and your data syncs to the app.

Your data

Who can see my TechRing data?

Only you, unless you choose otherwise. FirmTech says TechRing data is stored securely and handled to HIPAA standards, and is never sold or shared with advertisers.

You decide whether your doctor sees it, and you can stop sharing anytime. You can also delete your data and your account from inside the app. See FirmTech’s app page for details.

Common questions

See all 45 questions in the FAQ

What is an erection tracking device?: An erection tracking device is a wearable that measures erections, such as how many happen, how firm they are and how long they last. FirmTech’s TechRing is a soft ring worn at the base of the penis with built-in sensors. It tracks during sex and overnight, and syncs to an app on iPhone or Android over Bluetooth.
What does the FirmTech app track?: The app shows firmness and duration during sex, plus the count, strength and length of nighttime erections. Everything rolls into an Erectile Fitness Score from 0 to 100. You can log sleep, drinks, workouts and medication, and the app shows which of them actually moves your score.
How long does the TechRing battery last?: A full charge lasts about 12 hours, which covers a full night of sleep. Charging takes 2 to 4 hours with the included USB cable. FirmTech shows the TechRing charging on a nightstand dock, so many owners charge it during the day and wear it at night.
How do I sync a night of data?: You do not need to do anything while you sleep; the TechRing tracks on its own. When you wake up, hold the button for 3 seconds, put the ring on the charger and connect to it in the FirmTech app. The night then syncs to your account.
How often should I wear the TechRing overnight?: FirmTech says wearing the TechRing once a week gives a clearer picture of your vascular and sexual health. More nights build a firmer personal baseline, and the trend across weeks matters more than any single night, since counts naturally vary.
Does the TechRing need replacement parts?: Yes. Replacement sleeves start at $15, and FirmTech recommends replacing the sleeve about every 30 nights. The standard 1-year TechRing warranty includes 2 sleeve replacements, which helps with ongoing cost in the first year.
Which phones work with the TechRing?: The FirmTech app works on iPhone and Android and connects to the TechRing over Bluetooth. The app is free with the TechRing. FirmTech says a redesigned app is in development; the current app looks different but tracks the same data.

Start tracking your nights

Every FirmTech ring is sold online at getfirmtech.com with free discreet shipping on orders over $100 and a 30-day money-back guarantee.

Shop the TechRing, $275 Contact FirmTech