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Rated 4.82,147 verified reviews

Certus Pro™

Stop Missing Out. The Invisible Hearing Aid That Tunes Itself To Your Ears. App-Controlled, and Thousands Less Than the Clinic.

Sale price£249.99Regular price£449.99Save £200KlarnaPay in 3 interest-free payments of £83.33 with Klarna.
The App-Tuned Certified OTC Hearing Aid
A real hearing aid, not a cheap ‘amplifier’Checks your hearing, ear by ear, in the appVolume and 4 modes, right from your phoneInvisible 2g in-ear fit. Nobody has to know
How many pairs?One pair covers both ears
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SELLING OUT FAST
Due to high demand, limited stock in the UK warehouse
The Certus 90-Day Hear-Every-Word GuaranteeWear them for three full months of real conversations: dinners, phone calls, the TV. If your hearing does not noticeably improve, send them back for a full refund. No questions asked.
Brian T. verified Certus customer
★★★★★Verified Customer

“I can finally hear my granddaughter’s little voice on the phone without saying ‘sorry’ every five seconds. My mates haven’t even noticed.”

Brian T. · Verified Customer

Certified OTC hearing aidInvisible in-ear fitApp control, ear by earBuilt-in hearing check16h charge · 60h with case90-day home trial2-year guarantee

Real people. Real conversations back.

They stopped nodding along and started joining in again.

Swipe to see more
lindaj.1962“Did the little hearing check with my morning coffee. It set each ear different and honestly, it shows.”
daveandsue.caravan“Got these for my dad. He turns the telly mode on himself now, we haven’t argued about the volume since.”
pat.hutchins54“My right ear’s always been the worse one. First pair that actually treats it different to the left.”
keithb_1959“Turned them up from my phone under the table at the carvery. Nobody clocked a thing.”

Rated 4.8/5 by 2,147 verified reviews · read their reviews below

The quiet pullback

Every room sounds different. Your hearing should keep up.

It creeps in slowly. The TV gets a little louder every year. You ask people to repeat themselves, then stop asking and just nod along instead. You sit a bit quieter at the table because following the chatter is exhausting, so you stop trying.

It’s not that you don’t care. You’re missing half of what’s said, and pulling away feels easier than asking “sorry, what?” one more time. You’re not alone, and it isn’t your fault.

Certus Pro brings the voices back: your partner, your friends, the person beside you. Instantly, invisibly, and without a clinic, an appointment, or the thousands a prescription pair costs.

The struggle of following conversations with hearing loss

You’ve probably tried these already. Here’s why they failed:

Turning the TV up (again)

Everyone else in the room gets blasted out while you still miss half the dialogue.

Cheap pharmacy amplifiers

Bulky, whistly, one-volume-fits-all boxes that make every sound louder, not clearer.

One fixed setting for every room

Right at home, wrong at the pub. A busy restaurant and a quiet kitchen need different sound, and a fixed device can’t do both.

What actually works: a hearing aid tuned to your ears

Certus Pro checks each ear in the app, tunes itself to the result, and matches the sound to the room you’re in, at a fraction of a prescription price.

The simple science

Meet the TrueTune™ Personal Sound System

The check-and-tune engine built into every pair of Certus Pro, designed to fit your ears, not “average” ears.

Three simple science steps showing how the Certus Pro microphone, smart chip filters, and sound delivery system work.
1

Check: it picks up every sound

Run the built-in hearing check from the app, one ear at a time, at your own kitchen table. Five minutes, no appointment.

2

TrueTune: it lifts words above the noise

Certus Pro shapes its sound to each ear’s result: digital noise reduction lifts speech to the front and pushes background hum down. You hear the words, not the room.

3

Adjust: it hands you the clarity

Four listening modes and per-ear volume, changed from your phone in a tap. No reaching up to fiddle at your ear.

A certified OTC hearing aid, built for mild-to-moderate everyday hearing loss. Real hearing aid technology, not a gimmick, and 2,147 verified reviews back it up.

Life after Certus

Sound that follows you from room to room, and tells nobody. For good.

You deserve to feel like yourself in every conversation, not like you’re one step behind it.

Tuned to your ears, not “average” ears

The built-in hearing check sets each ear on its own, so the quiet ear gets more help and the good ear isn’t blasted.

Every room, one tap

Quiet kitchen, busy carvery, the evening telly: four listening modes switch the sound to match the room.

Nobody has to know

At 2g and tucked inside your ear canal, they’re yours to mention or not. Most people never notice.

Adjust it from your lap

Nudge the volume from the phone in your pocket, mid-conversation, without anyone seeing you touch your ear.

Certus Pro device shown at true scale, small enough to disappear inside the ear
What to expect

From the first listen to a different daily life

Sound either includes you or quietly leaves you out. Here is what changing that feels like, with 90 days to prove it risk-free.

First listen

Five minutes with the app, tuned to your ears

You run the built-in hearing check, one ear at a time, and hear the room come into focus with your own result.

Day 1

You stop asking “sorry, what?”

Conversations at normal volume start landing the first time, not the second or third.

Week 1

You find your modes

Telly mode in the evening, restaurant mode on Sunday, and the volume lives quietly in your pocket.

Month 1

You forget you’re wearing them

Certus Pro becomes part of your day instead of a device you think about. You open the app only when the room changes.

Everything you want from a hearing aid, nothing you don’t

Premium home design
Certus Pro Invisible Fitting

Tuned to each ear, by you

A five-minute in-app hearing check measures each ear on its own, and Certus Pro’s digital noise reduction shapes the sound to the result: speech forward, background hushed.

So small, most people won’t notice

An invisible-in-canal fit that sits hidden inside your ear, just 2g and smaller than your fingertip.

Rechargeable: zero battery fumbling

Pop them in the pocket case. A full charge lasts 16 hours, with up to 60 total hours of hearing on the go.

Four modes for real rooms

Quiet, Outdoor, Restaurant and Television. One tap in the app switches the sound to match the room, and per-ear volume lives on the same screen.

“What if I’m no good with apps? Will it beat me?”

Fair question. The app is what makes Pro worth it, so we built it for people who don’t like apps. Here is the honest answer.

Set up once, then forget it

Scan the QR code in the box, pair once, run the check. After that they work all day on their own; you open the app only when you want to change something.

Big buttons, plain English

Volume up, volume down, and four modes with names like Restaurant and Television. If you can send a text, you can run this.

7 pairs of tips, whistle-free fit

A loose fit is the number-one cause of whistling. Seven pairs of soft tips help you find a comfortable seal that keeps the sound clean.

Still unsure?

Wear Certus Pro at home for 90 days: three months of dinners, calls and telly. If it is not right for you, send it back for a full refund.

Independent product review

An audiologist explains why Certus works

Years spent fitting prescription hearing aids in clinic. Certus Pro is the first OTC pair she’s seen under £250 that starts the way a clinic fitting starts: by measuring each ear.

Most cheap hearing aids guess at your hearing. Good ones measure it.

“In clinic, the first thing I do is measure each ear, because no two ears lose hearing the same way. Certus Pro is the first pair at this price I’ve handled that starts the same way: it checks each ear in the app and tunes to the result instead of shipping one sound for everyone. That is the difference between an amplifier and a fitting.”

LB
Laura B.Audiologist, independent reviewer
Laura B., audiologist, holding the Certus Pro case
The honest maths

What clear hearing actually costs in the UK

Same goal: hear every word again. Three very different bills.

Option 1

Private audiologist

£1,000–£3,000+ per pair

Hearing tests, fittings and follow-up appointments. The right route for severe or complex loss, and a very big bill for everyday mild-to-moderate loss.

Option 2

The NHS route

“Free”, but you wait

Referral first, then waiting lists that can run months, with limited styles to choose from. Fine if you can wait. Hard when you are missing conversations today.

Option 3

Certus Pro

£249.99 today

A certified OTC hearing aid that checks and tunes itself to your ears at home. At your door in days, tuned in minutes, with 90 days to prove itself.

90-day money-back · 2-year guarantee · Free UK shipping
Compare before you buy

Why Certus is different

Certus Pro
Cheap amplifiers (£30–80)
Certified OTC hearing aid
✓
×unregulated ‘amplifier’
Invisible in-ear fit
✓
×bulky, visible case
Tuned to each ear with an in-app hearing check
✓
×one sound for everyone
Rechargeable: 16h charge, 60h with case
✓
×fiddly tiny batteries
7 pairs of tips for a snug, no-whistle fit
✓
×one generic tip
4 listening modes, switched from your phone
✓
×stuck on one setting
90-day home trial
✓
×30 days at best
2-year guarantee
✓
×3 months at best
Proven results

What 2,147 verified customers report

*Based on analysis of 2,147 verified reviews.

86%

Rate it 5 stars

and say they would choose Certus Pro again.

88%

Notice clearer conversations

within their first week of everyday wear.

9/10

Recommend it to family

most often instead of a prescription pair costing thousands more.

Customer Reviews

4.8

Based on 2,147 reviews

1,853
211
55
20
8
100% verified buyers

Every review here was left by someone who bought Certus Pro from us. Critical reviews are never edited or removed.

Certus Pro in real life

Marion VVerified buyer

The blackbird out the back before the alarm went

Daft thing to write a review about but that's the one that got me. I sat up in bed on the second morning and there it was in the tree by the shed, and I have lived in this house since 1988. Little sounds coming back is the part nobody prepares you for. The boiler, the fridge, my own feet on the stairs, the letterbox. Voices are the reason you buy them. The rest of it's the bit that catches you out.

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Paul D.Verified buyer

Fifty eight and bluffing my way through meetings

I'm still working, a lot of it round a table with clients. I'd got good at bluffing. Nodding, asking them to email me the detail, sitting with my better ear towards whoever mattered. That's exhausting and it's not how you want to run a meeting. I put the quiet setting on for the office and restaurant for lunches. The difference is I no longer arrive early to bag the chair at the end of the table. Nobody at work knows and I intend to keep it that way, not because I am ashamed but because it is nobody's business.

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Linda L.R.Verified buyer

Dad's NHS ones never left the drawer

Dad had the hospital ones for three years and wore them about as often as he wears a tie. Too big, they whistled when he put his cap on, and he could never get the little tube back on after cleaning. They lived in the kitchen drawer with the takeaway menus. I set these up on his phone when I was down in the spring and he wears them every day now. The beige ones are still in that drawer. He says he is keeping them as a spare. He will never put them in again.

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Hector C.Verified buyer

Very good, and here is the honest limit

At the table, on the phone, in the car, in the church hall, all better than I expected. In the club on a Friday with two hundred people in and a hard floor, they help and they don't fix it. The restaurant setting takes the edge off but nothing at this money is going to pull one voice out of eighty. I knew that going in and I am still giving four rather than five because I think the page could say it more plainly.

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Golda L.Verified buyer

Took up the ukulele at seventy

Thursday afternoons in the church hall, twenty of us strumming and a lady at the front calling out the chords. I could not hear her calls over twenty ukuleles, so I was always a bar behind. Quiet setting was no good, too much going on. Restaurant was better and she comes through over the strumming now. I am still a bar behind sometimes but that is my fingers and not my ears.

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Gavin B.Verified buyer

Our Dad is 71 and he did not want to know

Dad has been deaf in one ear since the army and the other one has been going for years. Mum was at the end of her tether with the telly. He wouldn't go to Specsavers because he said they would try to sell him something, which to be fair is what happened to his brother. I ordered these and drove them over on the Saturday. We did the setting up together at the table, he did the hearing check himself with me holding the phone, and it set his two ears completely differently, which he thought was very clever. Mum rang me on the Tuesday to say the telly was on twenty and she could hear herself think! 👍

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Tuned to you in minutes, even if "tech" isn’t your thing

No appointment, no computer. The QR code and a plain-English guide are in the box.

Swipe through the 3 steps
Step 1

Charge the aids in the case with the included USB-C cable until the display shows 100.

Step 2

Scan the QR code in the guide and pair once. The aids switch on by themselves out of the case.

Step 3

Run the five-minute hearing check, one ear at a time. That’s it. They’re tuned to you.

Everything included with Certus Pro, out of the case and ready to wear
What’s in the box

Everything you need to check, tune and wear them the same day

  • 1 pair of Certus Pro invisible hearing aids
  • Rechargeable charging case with battery display
  • 7 pairs of soft comfort ear tips
  • Cleaning tool & USB-C charging cable
  • Plain-English guide with the app QR code

No subscriptions, no clinic visit. Charge them, pair once, run the five-minute check and start hearing clearer the same day.

Is Certus Pro the obvious choice for you?

For people tired of nodding through conversations they missed.

Best for

  • You miss parts of everyday conversations
  • You want sound tuned to each ear, not one-size-fits-all
  • Your days move between quiet rooms and noisy ones
  • You can send a text: the app is that level of simple

Choose another option if

  • You have sudden hearing loss, pain or discharge
  • You need a prescription device for severe or complex hearing loss
  • You want a device fitted and tuned by a clinician in person
  • You don’t use a smartphone: Certus One is our app-free pair, built for exactly that
If the first list sounds like you, Certus Pro is built for exactly that job. And you have 90 days to prove it.

Technical Specifications

Built for daily use
See full specifications
Type
Certified OTC completely-in-canal (CIC) hearing aids, app-connected, rechargeable, sold as a pair
Fit
Invisible in-canal; 2g each (1.8 x 1.2 x 2.1 cm); 7 pairs of ear tips
Sound control
In-app hearing check per ear; digital noise reduction; 4 listening modes; per-ear volume from your phone
Best for
Mild-to-moderate hearing loss
Battery life
16 hours per charge
Charging
About 2 hours via USB-C charging case (case shows its charge level)
Case top-ups
Up to 60 hours total, recharging the aids about 4 times
Frequency range
348 Hz - 5,583 Hz
In the Box
1 pair of aids · charging case · 7 pairs of ear tips · cleaning tool · USB-C cable · guide with app QR code
Guarantee
2-year Certus brand guarantee

Try Certus Pro Risk-Free

Order today and wear them at home for three full months: at the dinner table, on the phone, in front of the TV. If they’re not right for you, return them any time within 90 days for a full refund. No questions, no hassle.

90-day trial

No questions asked

2-year guarantee

A real brand promise

Free shipping

Free tracked delivery

Human support

A human answers

Still deciding if Certus fits your day?

Will people be able to see them?

Very unlikely. They sit completely inside your ear canal and are virtually invisible. At just 2g and smaller than your fingertip, most people won’t notice them at all.

Will they whistle or buzz?

A loose seal is the main cause of whistling. Seven pairs of soft ear tips are included so you can find a snug fit, built-in noise reduction keeps the sound clean, and the in-app check tunes each ear so nothing is turned up further than it needs to be.

Do I need a smartphone?

Yes, for the five-minute setup: you scan the QR code in the box, pair once, and run the hearing check from the free app (iPhone and Android). After that the aids work all day on their own; you open the app only to change volume or mode. If you’d rather skip the phone entirely, Certus One is our app-free pair.

Are they really rechargeable?

Yes. Charge them in the included case (like wireless earbuds). A full charge lasts 16 hours, and the case tops them up about 4 times when you’re out: up to 60 hours in total.

Are they suitable for severe hearing loss?

They’re designed for mild-to-moderate hearing loss and everyday situations: conversation, phone, television. For profound loss, a prescription aid is the right route, and we’d rather be honest than oversell.

Is this a real hearing aid or just an amplifier?

A real hearing aid. Certus Pro is a certified OTC (over-the-counter) hearing aid for mild-to-moderate hearing loss. That is a regulated category with real requirements behind it. Cheap ‘sound amplifiers’ blast one sound at everyone; Certus Pro’s TrueTune™ system checks each ear and tunes to the result, so you hear the words, not the room.

How can it cost so much less than the audiologist?

Because you are not paying for the building. A private prescription pair costs £1,000–£3,000 largely due to clinic overheads, appointments and fitting fees. Certus Pro ships straight to your door, tunes itself with the in-app hearing check, and you get 90 days at home to prove it does the job.

How does shipping work?

Every order is free, fully tracked and insured. Fast Tracked Shipping, free on every order. Your tracking link arrives by email the moment it leaves us.

What if they’re not right for me?

90-day no-questions returns. Send them back for a full refund, no hassle. Covered by a 2-year guarantee.

4.8/5 based on 2,147 reviews

Try Certus Pro Risk-Free

Wear them through real daily moments. If it’s not right for you, send it back. We make it effortless. 2,147 verified customers have already made the switch.

90-day money-backUse them at home for three full months. Not impressed? Return them for a full refund, no questions asked.
2-year guaranteeCovered against faults for two full years, backed by real human support whenever you need it.
Free shippingTracking provided after dispatch.
Loved by everyday listeners. Approved by audiologists.#1 rated certified OTC hearing aid in the UK
A real hearing aid, not a ‘sound amplifier’