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.
Certus Pro
1 Pair
£199.99
Sale price
£199.99
Regular price
£349.99
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Certus Pro™
Stop Missing Out. The Invisible Hearing Aid That Tunes Itself To Your Ears. App-Controlled, and Thousands Less Than the Clinic.
£199.99
Sale price
£199.99
Regular price
£349.99
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
1 Pair
£199.99£349.99
Best value
2 Pairs
£319.99£699.98
For a partner, or for both parents — the second pair is £120.00, not £199.99.
Price will go back to normal in --:--
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.
★★★★★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 1,563 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.
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.
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 1,563 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.
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
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
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 pairHearing 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 waitReferral 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
£199.99 todayA 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 shippingCompare 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 1,563 verified customers report
*Based on analysis of 1,563 verified reviews.
93%
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 1,563 reviews
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
JulieVerified buyer
Half the price of what the clinic quoted, works fine
I went private first.Two appointments, hearing test, then the man came back with a quote for £2,300 for the pair and started talking me through a payment plan. I said I'd think about it and I never went back. Ordered these instead mainly to see what you get for the money. I've had them since April. In the house they are very good, on the phone they are very good, in a restaurant I can hear the person opposite me which is the thing I actually wanted. Am I saying they are the same as the £2,300 pair. I don't know, I never had the £2,300 pair. What I can tell you is these do the job I needed doing.
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Yusuf R.Verified buyer
Stopped me hiding away
This is a bit personal but I'll put it anyway in case it helps someone. Over about two years I stopped going to things. Not a decision, I just kept finding reasons. Big family gatherings first, then the coffee morning, then I realised I had not had a proper conversation with anyone for a fortnight. It is easier to stay in than to keep asking people to repeat themselves. My son bought me these in May. Took about four days before they felt normal, my own voice sounded odd at first which apparently everyone gets. I rang my sister last week and we were on the phone for over an hour. Ive started going back to the Tuesday group. That is all really.
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Denis WhiteVerified buyer
Wore them to my grandsons wedding
My daughter ordered these for me about six weeks before my grandsons wedding because she said she was fed up of me missing things. I wasn't convinced and I will be honest I only put them in on the morning to keep the peace. I heard the whole of the best mans speech. I'ven't heard a speech properly in years, normally I sit and laugh when everyone else laughs and hope for the best. The volume was fine straight out of the box, we did not change anything. I used the middle size tips which is what they come fitted with. They were comfortable all day and all evening, I had them in from about nine in the morning until midnight and my ears weren't sore. If you are on the fence about it, get them before whatever it is you are dreading, not after.
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Emlyn HVerified buyer
Halfway there and I will say so
Quiet room, good. Phone, good. Anything with more than two voices in it, no real change at all. Three stars is exactly how I feel about them, which is half of what I wanted at a fraction of the price of the other road, and I suppose that is fair enough. I'm not sending them back and I am not going to pretend they sorted it either.
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Fred F.Verified buyer
Nobody has noticed and its been four months
The main thing for me was that I didn't want the big beige one that sits behind the ear. My brother has those and you can see them from across the room. These sit down inside the ear and my hair is short so I was expecting somebody to say something. Four months now and nobody at the bowls club has said a word. Sound wise they are good, better in a quiet room than a noisy one obviously but I can hear the caller now which I couldn't before. Charging is easy, they go in the case and the case goes on the side by the kettle. I do it every night. Battery has never run out on me.
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Denis M.Verified buyer
Try the other tips before you give up
The size they come fitted with was too small for me and I got a bit of whistling when I put my glasses on. There are spare tips in the packet, three sizes, and swapping them takes about ten seconds, you just pull one off and push the other on. Went up a size and it has been silent since. Worth saying because if I hadn't tried I would have sent them back thinking they were faulty.
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Bought a Certus Pro? Write a review — It takes two minutes and helps the next person decide.
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.
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.
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.Buy Now →
One or Pro?
Two pairs. One difference: control.
Both are the same invisible, rechargeable pair underneath. The difference is control: Pro is checked and tuned to each ear from a free app.
Certus OneSet and forget
Certus ProThis page
Price
£149.99£259.99a pair
£199.99£349.99a pair
Setup
One button, no phone
Free app, paired once
Tuned to each ear
—
In-app hearing check
Listening modes
One, set by hand
Four, from your phone
Volume
On the device
Per ear, from your phone
Invisible in-canal fit
Just 2g
Just 2g
Battery
16h · 60h with case
16h · 60h with case
Whichever you choose: the 90-day home trial, the 2-year guarantee and free tracked delivery are identical.
Technical Specifications
Built for daily useSee 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
- Warranty
- 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.
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. 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.
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. 1,563 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.
A real hearing aid, not a ‘sound amplifier’