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Zadarma (zadarma.com) has 529 customer reviews on Five Star Index, with an average rating of 2.2 out of 5.
Also known as
zadarma.com
Website
zadarma.com
Category
Computers & Phones
Listed on Five Star Index
2026
About these reviews
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The company replied to 96% of reviews.
Latest
Most recent review: October 2026.
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Reviews are shown as their authors wrote them. The company can reply, but cannot edit them.
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usable SIP provider with mobile app
pros:
1. they have apps for iOS and Android that seamlessly integrated with the phone dialer. nice and simple.
2. in order to call PSTN number you need to charge your account with some credit (min 5$). The call quality I experienced was very good. I made two calls. the price per minute is average in the VOIP arena (not too expensive and not cheap).
3. they provide an extensive SIP API for call treatment.
cons:
1. no MacOS desktop app. no desktop browser (firefox) plugin
2. like many other DiD providers (virtual number seller): the KYOC these days demands you upload copies of your passport, driver license, bills and other personal data which is scary (but necessary to comply with all the new EU regulation). I've decided not to use that feature because of that sensitive information. I must admit this procedure is spreading to all virtual phone companies (to fight crime?).
3. the Zadarma eSim plans are a bit expensive if you compare it to other eSim providers. for example : if I fly to Singapore : I can't buy a dedicated singapore eSim. I must purchase the "world eSim plan" which costs more. lost 1 star.
Response from ZadarmaNov 16, 2023
Hi Moti, thank you for sharing your experience! You may be interested in the Zadarma Chrome extension https://chromewebstore.google.com/detail/click-to-call-zadarma/lkignmdgfllplgaabepannhkjbenhmak?hl=ru&pli=1 as a desktop browser plugin?
MT
Michael T.
The international rates at zadarma are…
The international rates at zadarma are reasonable and have saved me a lot of money on my overseas calls.
Response from ZadarmaNov 1, 2023
Hi, Michael! Thank you for such a positive review.
ER
Edmond R.
The call analytics provided by zadarma…
The call analytics provided by zadarma are comprehensive and help me gain insights into my business communication patterns.
Response from ZadarmaSep 18, 2023
Hi, Edmond! Many thanks for your review!
IS
Inès B.
The pricing plans at zadarma are…
The pricing plans at zadarma are flexible and cater to various needs. I love how I can customize my package to suite my business requirements.
Response from ZadarmaSep 14, 2023
Hi, Inès! Thank you for such a positive review.
PS
Patrick S.
Zadarma is an EXCEPTIONAL PROVIDER of…
Zadarma is an EXCEPTIONAL PROVIDER of telecommunication and cloud communication services. Their quality of service is unmatched, and their customer support is UNPARALLELED.
HIGHLY RECOMMENDED.
Response from ZadarmaApr 10, 2023
We appreciate your review. If you have any questions, please contact our 24/7 online support.
OM
Oliver M.
actually works
it was a bit of pain to set up, the document verification was not approved initially, and the interface is not v clear but i got everything to work and now have a US mobile # for a reasonable price
Response from ZadarmaMar 20, 2023
We appreciate your feedback. If you have any questions, please contact our 24/7 online support.
ML
Mocca L.
Recommended. Happy about zadarma.
Ok, so giving one with initial start, depending on service over time, might come back, but if no reply, assume it's all good.
So, Seeing several here indicate a good experience with pbx/business accounting more, yet several really opposing/questioning the validity of the 'ID/Documents' process, I will give some feedback here. There is some truth to it on both sides.
First of all, I will break down some point here then make some suggestions about Zadarma, both to them and to potential customers:
1. They have lots of info on the site, how to set equipment up, English, a github repo for the API etc. AWESOME. Tons of easy stuff to navigate and intuitive info for integrations.. I am coming from a simple home user situation but a technical user in other things..
I find their site pretty awesome, and the technical availability , yet easy navigation a 9/10.
2. porting, some info can be somewhat hidden as on any site, but they do answer fairly quickly on the chat, are pretty helpful, and have good English (Bulgarian/Russian based from what I can make out).. I have had issues, which I will further expand on in a minute, but again, this was perfectly fine for me. In a world where we get used to 'automated bla bla' yet annoys us as such, it can easily sometimes be counter-annoying with some good old fashioned 'human error' but I feel this is hmm, maybe 8/10.
3. Line so far, in/out, I am being reported from my user, some busy signal now and then (will look into this as it's new and not sure if this is an issue here or on the zadarma network). Sound, etc, and posssiblities (PBX, softphones, just great and easy DIY system), are all great. Again, I will give this a 9/10
(depending on this busy thing, granted could be then less). but we are happy so far.
4. Pricing ye.. I mean, among the cheapest pricing I could find YET great interface and service (so far).. so giving this a strong 9/10.
5. Ok, now about the ID stuff.. some people here are/were worried about being Identity theft, and I myself, also worried about this! And YES, you CAN get really upset about this.. in fact, it boils down to either language OR some outdated web replies or something.. because we DID experience some manual errors and we ALSO got the ID rejected.. in our case, the ID and address given MUST be located in same ADDRESS and CITY! as the number one wants.
for "local" numbers at least.. and HERE is the issue which makes zadarma potentially lose clients and scare some :D Of course, I don't know if zadarma, as any company, might be doing something witt the ID.. but the point was, instead of being told "You have not chosen a local number in your city", or making it very clear one MUST have this.. one just got a reply with "ID was rejected".. so one things WHAT? and it just states, try making ID like this and that.. ignore all that.. I mean , make the ID proper, as they say with Zadarma and date and so on, but IF it is rejected, it is more likely this... by asking support and specifically asking what was wrong and to be honest, really ranting, did I _finally_ get the solution to the problem, slowing the process down both for us AND Zadarma.. so for this particular issue , I give Zadarma 4/10, for not having this better solved for them and for us!
But ye, if one is aware of this, and makes sure one is in the same city (or uses toll-free perhaps as I see a reviewer state), then everything else seems awesome.
Highly recommended in other words :)
Will update in 6 months or a year if I see any need to change opinion.
score 39/50, making the ID process easier and/or replying with the correct "issue" instead of the generic "ID failed" would probably make this a 8-9/10 in sign up process, hence a 43-44/50 score.
Looking forward to having you as our home system.
PS. OH, encryption however, REALLY is wanted, it doesn't seem to be there, and given how providers are all from all over, I feel this should be something zadarma and any providers should facilitate....
EDIT: to zadarma's reply: Hi, I don't mind the ID process actually. It is probably a good thing. I mean, I spent over a week asking WHY it failed. Only through chat did we discover it was due to being in a neighbouring town , it was failing. Your website just said "sorry, ID failed". This is both a misnomer and it makes you lose time, as much as customer. If you improve the 'error message' to accurately describing the "failing conditions" (be it ID, city, or whatever else), things will be much better. But, as I say, to me you look like a great choice, looking past this one issue. Thank you.
Response from ZadarmaMar 18, 2020
Thank you for a thorough and detailed review and your trust!
We'd like to address the point at which we need to improve. Documents that are required for number connection in a certain country/city are usually specified by local government or providers. We'd be happy to connect all numbers without any ID verification as it is done for the USA, Canada, and the UK. We completely agree that the requirement for some numbers to provide the address in the same region is the hardest to fulfill for many of our clients, that is why we are trying to offer alternatives in those places (such as national numbers, toll-free or mobile).
As for the short answers, we have sent you a private message on this platform so that we can take a look at your example and decide on how to proceed.
We are working on voice encryption, however, its set up and key exchange can be too complicated for most of our users, so we will first add it to our apps. Also, please note, that calls from our website (including the ones from ZCRM) are made via WebRTC, which does have encryption.
We appreciate your feedback and hope you enjoy Zadarma.
EDIT: Thank you for the update! There are a lot of different requirements for different countries (including addresses), but we would still like to investigate the issue and maybe find a better way of communicating for the future. Please reply the private message on this platform, so we can take some actions.
HK
Harry K.
Their service is excellent
Their service is excellent! Zadarma has helped us to grow our business exponentially by allowing us to communicate more effectively with each other internally and with our clients. Although their customer support still needs some improvement, overall I am very happy with them. 4 Stars!
Response from ZadarmaNov 13, 2019
Thank you for the feedback! We hope you are enjoying our services and please let us know if you have any questions.