Alright I suppose
JACK P.Verified purchase, 🇳🇿 New Zealand
Alright but nothing special.
25 people found this helpful
Certus Hearing Reviews
Certus One complaints and low ratings
Every 1, 2 and 3 star review, unedited. 48 of 1,287 reviews rated 3 or below.
Are there complaints about Certus One?
Yes. 48 of 1,287 reviews, 3.7%, rate it 3 stars or below.
Review pages that show only praise are not worth reading. These are the complaints, ordered by how useful other readers found them, with our replies where a reply was given.
What the complaints have in common
Read end to end, the low-star reviews fall into three groups, and only one of them is really a complaint about the product.
1. Hearing loss outside what the device is for
The most common one-star review is from someone with severe, profound or single-sided loss. No over-the-counter device at any price is built for that: the category is capped on how much it can amplify, deliberately, so it cannot damage hearing further. Certus One is for perceived mild to moderate hearing loss in adults 18 and over. If you have lost hearing suddenly, or in one ear only, see a doctor before you buy anything from anyone, including us.
2. Noisy rooms
The second group bought it expecting restaurants and crowded rooms to be solved. They are not. Reviewers consistently describe good results one-to-one, on the phone and in a quiet living room, and much smaller gains in a pub or a busy restaurant. That gap between quiet and noise is the honest limit of the price bracket, and it is the single most useful thing to know before ordering.
3. Fit
The third group could not get a comfortable seal. Twelve tips in three sizes ship in the box, and a good number of reviewers say the device only started working properly after they changed tips, which is the first thing to try. For a minority of ear canals none of the tips work, and that is a return.
What we do with these
Nothing on this page is edited or hidden. Where a reviewer raised something we could answer, the reply is attached to the review itself. 9 reviews across the whole corpus carry a reply from Certus Hearing.
The 40 most-read critical reviews
Ordered by how many readers marked them helpful. Unedited.
Waste of time for me
MarionVerified purchase, 🇳🇿 New Zealand
Im deaf in one ear, properly deaf, and these did NOTHING for it. Doctor told me afterwards nothing at this price would have. Should have asked first instead of ordering off an advert. Got a refund.
14 people found this helpful
Reply from Certus Hearing
Sorry this wasn't right for you. Certus One is designed for mild to moderate loss. For profound loss on one side you'd be looking at a CROS or bone-conduction device, which has to be fitted by an audiologist — no over-the-counter aid at any price would have helped. Your refund shows as completed.
Cant stand anything in my ears
Trevor H.Verified purchase, 🇳🇿 New Zealand
Never could with earplugs either so I should have known. Nothing wrong with them, just not for me. Sent back.
10 people found this helpful
Reply from Certus Hearing
Nothing we can do about that one, but thank you for saying it plainly — it's genuinely useful for anyone else who's never got on with earbuds.
Not sure
Gill WardVerified purchase, 🇳🇿 New Zealand
Not the difference I was hoping for.
10 people found this helpful
Nearly three weeks to get used to
Rosemary F.Verified purchase, 🇳🇿 New Zealand
Everyone else seems to manage in a few days. My own voice sounded wrong for ages. Alright now.
7 people found this helpful
Not for everyone
Betty R.Verified purchase, 🇳🇿 New Zealand
One ear is better than the other.
6 people found this helpful
Fair enough
Bob B.Verified purchase, 🇳🇿 New Zealand
I have gone back and forth on this review for a month. The facts: television better, telephone somewhat better, one to one conversation better in a quiet room. Group conversation no better at all, and outdoors on a windy day worse than nothing because of the rush of noise. My loss is on the moderate to severe line and I suspect that is the explanation, and the doctor said as much when I saw him afterwards, which I should have done before ordering rather than after. Three stars because they have genuinely helped in the house and I am keeping them, but somebody in my position should know what they are getting and not read only the five stars.
6 people found this helpful
OK at home, not much use in a crowd
Jackie J.Verified purchase, 🇳🇿 New Zealand
At home and in the car theyve made a real difference. In a busy pub with the match on Im no better off than I was. Depends what your problem is I suppose.
3 people found this helpful
Reply from Certus Hearing
That's a fair review. Directional microphones help in a crowd but nothing worn in the ear solves a loud room with a match on — anyone telling you otherwise is selling. If you haven't tried the noisy-room setting, it's worth a go.
Depends what you want them for
Terry N.Verified purchase, 🇳🇿 New Zealand
Bit disappointed but theyre usable.
3 people found this helpful
So so
Rashid f.Verified purchase, 🇳🇿 New Zealand
Would suit someone with milder loss than mine.
3 people found this helpful
Not what I wanted
Bernard W.Verified purchase, 🇳🇿 New Zealand
Wanted them for phone calls and they dont do that.
3 people found this helpful
Wasnt for me
Angela P.Verified purchase, 🇳🇿 New Zealand
My loss is too bad for these. Got a refund.
2 people found this helpful
Bit hit and miss
SallyVerified purchase, 🇳🇿 New Zealand
Some days theyre great, some days not.
2 people found this helpful
Needed my son to set them up!!
Elaine T.Verified purchase, 🇳🇿 New Zealand
Couldnt do the hearing test on my own, the writing is small. Fine since he did it.
1 person found this helpful
Reply from Certus Hearing
Sorry the text was small for you. You don't have to use the app: ring us and we'll run the hearing check with you over the phone and set them up from that. Same for anyone else reading this.
Fine, comfort is my problem
KEITH C.Verified purchase, 🇳🇿 New Zealand
The sound is good, I have no complaint there. After about six hours my ears ache and I have to take them out.
1 person found this helpful
Middling for me
Stuart K.Verified purchase, 🇳🇿 New Zealand
Some improvement. Not as much as I had hoped for.
1 person found this helpful
Sent them back
John W.Verified purchase, 🇳🇿 New Zealand
Not powerful enough for my hearing. Returned them.
1 person found this helpful
Wasnt for me
Gordon R.Verified purchase, 🇳🇿 New Zealand
Couldnt get on with them. Sent them back.
1 person found this helpful
Middle of the road
brenda k.Verified purchase, 🇳🇿 New Zealand
Better than nothing, not the transformation the reviews suggested.
Some good some bad
Wally d.Verified purchase, 🇳🇿 New Zealand
Does help. Doesnt fix it.
The left one stopped charging after five weeks
IeuanVerified purchase, 🇳🇿 New Zealand
I want to be fair because up to that point I was going to write a five star review. Comfortable, discreet, and a real difference on the telephone, which was why I bought them. Five weeks in, the left one stopped taking a charge. Sat in the case overnight, no light, nothing. I tried the other slot, I tried a different plug, I cleaned the contacts with the brush like the card says. Rang them and they were perfectly polite and offered a replacement or a refund and I took the refund because by then I had lost confidence in them lasting. To be clear, the refund was quick and nobody argued with me. One star is for the product failing inside six weeks, not for how they dealt with it.
The sound was fine, my ears were the problem
Simon N.Verified purchase, 🇳🇿 New Zealand
I have never been able to tolerate anything in my ear. Earplugs, earphones, the lot. I gave it eleven days because I wanted it to work and by the end of it I was taking them out at lunchtime every day. That is me, not the product. The return was straightforward and the refund was in my account in under a week, which is why it is two stars and not one.
OK
Pauline R.Verified purchase, 🇳🇿 New Zealand
Home is better, the phone is better, and I am glad about both. Anywhere with background noise and I am straight back to watching mouths and guessing. My doctor told me afterwards that my loss is probably past what this kind of device can do, which I wish I had asked before ordering rather than after. Three stars because they have helped, just not enough.
Mixed feelings
H. OseiVerified purchase, 🇳🇿 New Zealand
The right one is fine, the left has never sounded as good.
Not what I was expecting
Maureen R.Verified purchase, 🇳🇿 New Zealand
I thought Id hear like I used to. I dont. Speech is clearer than it was and thats something, but its not what I had in my head.
They dont do phone calls
Declan R.Verified purchase, 🇳🇿 New Zealand
I wanted calls coming straight into them. They dont. My mistake for not checking properly. Returned.
Reply from Certus Hearing
You're right that we don't stream calls. It's on the spec page but it clearly isn't hard enough to find, and that's on us. Certus One is an amplification device, not a headset.
Some help, not enough
Julie K.Verified purchase, 🇳🇿 New Zealand
They have made a difference at home. In any kind of noise I am back where I started. I think my loss is beyond what these can do.
Mixed feelings
Joan H.Verified purchase, 🇳🇿 New Zealand
Cant wear them for more than a few hours.
Sent them back
Sandra L.Verified purchase, 🇳🇿 New Zealand
Not enough for me im afraid.
So so
Mike m.Verified purchase, 🇳🇿 New Zealand
Some help, not a lot
Mixed
Carol R.Verified purchase, 🇳🇿 New Zealand
Wind and traffic swamp everything.
No good for me
Carol W.Verified purchase, 🇳🇿 New Zealand
No use to me at all. Sent them back.
So so
Pauline W.Verified purchase, 🇳🇿 New Zealand
Better at home than out. Groups are still hard.
NO GOOD FOR ME
Marion C.Verified purchase, 🇳🇿 New Zealand
Not strong enough for my level of loss. Got my money back.
NOT FOR EVERYONE
Mary EllisVerified purchase, 🇳🇿 New Zealand
Took me weeks to get used to them.
Not bad, not great
Clive T.Verified purchase, 🇳🇿 New Zealand
They do something. Whether it was worth it I am still deciding.
MIXED FEELINGS
Barry S.Verified purchase, 🇳🇿 New Zealand
Fine in a quiet room, not much use in a busy one.
Average
joyce h.Verified purchase, 🇳🇿 New Zealand
They help a bit. That is honestly all I can say.
Not for me, though the sound was fine
Angela BarnesVerified purchase, 🇳🇿 New Zealand
I could never settle with anything in my ear. Returned without a quibble
Returned
Stefan R.Verified purchase, 🇳🇿 New Zealand
Didnt suit my ears at all...