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 4.8/5 from 2,137 users

The Private Performance Tracker

The Private Performance Tracker

Advanced sensors track your movement, speed, and progress — so you know exactly how to improve.

Regular price £39.99
Regular price £39.99 Sale price £120.00
SAVE 66% Sold out

🔒 100% Private — No Clinic Needed


Check in Minutes at Home


📱 View Results Directly on Your Phone

Limited stock — only 4 left

The Private Performance Tracker

Regular price £39.99
Regular price £39.99 Sale price £120.00
SAVE 66% Sold out
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Money Back Guarantee

Free Shipping

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Money Back Guarantee

Free Shipping

Always Protected

Money Back Guarantee

Free Shipping

Always Protected

Money Back Guarantee

Free Shipping

Always Protected

Money Back Guarantee

Free Shipping

Always Protected

Money Back Guarantee

Free Shipping

Always Protected

Money Back Guarantee

Free Shipping

Always Protected

Money Back Guarantee

Free Shipping

Always Protected

Money Back Guarantee

Free Shipping

Always Protected

100% Private.

No clinic. No awkward conversations. Results in MinutesQuick insights without the wait.

How To Use

Simple 6-Step At-Home Check

Designed to be private, quick, and easy to use from the comfort of home.

1

Collect Sample

Collect the sample directly into the included cup.

2

Add One Drop

After waiting 30–60 minutes, mix gently and place one drop into the sample area.

3

Start Observation

Turn on the base light and align the observation hole with the viewing area.

4

Record on Phone

Open your phone camera and position it over the observation hole to capture the view.

5

Save the Video

Record a short 15–20 second clip and save it directly to your phone.

6

Review Results

Play back the video and review the captured movement clearly on your device.

  • ★★★★★

    Honestly wasn’t sure what to expect, but the setup was super easy and everything worked smoothly. I liked that I could check things at home without any hassle. It’s discreet and very straightforward to use.

  • ★★★★★

    I didn’t want to go through the whole clinic process, so this was exactly what I needed. It’s simple, quick, and completely private. Took just a few minutes to use and gave me peace of mind right away. Definitely worth it.

  • ★★★★★

    This made something uncomfortable feel much easier to deal with. No appointments, no waiting — just a fast and private way to get clarity. I’ve already recommended it to a couple of friends.

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Why Keffios

Take Control Of Your Health — Privately

No clinics. No waiting rooms. No uncomfortable conversations. Just clear insights — from the comfort of home.

🔒

100% Private

Check your personal health in complete privacy — no appointments, no exposure.

Fast Results

Get clear visual insights in minutes without long lab delays.

🏠

At-Home Convenience

No need to visit clinics — everything can be done comfortably at home.

📱

Easy Recording

Capture and review results directly on your phone anytime you want.

🎯

Clear Visibility

High-magnification design helps you observe movement with clarity.

🧠

Peace of Mind

Stay informed and confident by understanding your baseline anytime.

FREQUENT ASKED QUESTIONS

When is it more accurate to observe?

We suggest that abstinence for at least 3 days andno more than 7 days before self testing is more accurate.

Why do sperm tests require abstinence for 3-7 days

lt takes 3 days for the number of tadpoles in the epididymis to return to normal after ejaculation After abstinence for more than 7 days before self testing, mature tadpoles in the epididymis begin to undergo apoptosisSo the self testing abstinence period cannot be too short or too long, otherwise it will affect the observed resultsinfluential.

Can sperm be extracted from condoms for self testing?

No, because condoms contain lubricant that can affect the observed results.

What time of day is good for self testing?

There are no specific requirements for this, as long as the number of abstinence days is sufficient, it can be done at any time Self testing at home.

Does ambient temperature have an impact on measurement?

This product should be used in a temperature range of 10°C~40°C and a relative humidity of RH<90%.normal Indoor environment measurement above 20 degrees Celsius is sufficient. lf the temperature is low in winter, it will affect the sample solutionTo enhance the effect and vitality, try to turn on air conditioning or heating to maintain an indoor environment above 20 degrees Celsius The measurement is more accurate.