Simplex (simplex.com) has a 4.0 out of 5 rating on OK.one, based on 201 user reviews collected here. It is listed under Business Services and its reputation is good. 22% of reviews are 1 star, a relatively high share; The business has replied to 86% of negative reviews. Last updated 2026-08-10.
What people say
A
Aleksandar MaticRS · 5 reviews · Experienced 2026-07-10 ·
★★★★★
Worst transaction fee available
Reply from Simplex2026-07-15
Hello Aleksandar,
Thank you for getting in touch!
I am sorry to hear about the difficulties the fees applied to your transaction have caused you.
Please be informed that the fees charged for your payments allow us to serve you in the most efficient and timely manner possible. Our fees can generally range between 3.5 and 5% of the total purchasing amount, with a minimum fee of 10 USD.
I would like to clarify that you are always able to see the exact amount of cryptocurrency you will receive, with the fees already deducted and the exchange rate at the time of your purchase applied, on the checkout page. At this stage, you have the option to either proceed with your payment, or opt out of the process entirely, should the amount seem unsatisfactory.
Nonetheless, we are always striving to lower our costs for your convenience – therefore, you are most welcome to try and issue a new transaction at a slightly later time, and we will do everything we can to charge you the most reasonable amount, all the while providing you with excellent services.
Please do not hesitate to let us know should you have any further queries.
Regards,
Julia
Head Of Customer Support
I just bought $120 Worth of Bitcoin it was taken out of my account but still not showing I have a balance
Reply from Simplex2026-07-15
Hello,
Thank you for the review.
I have thoroughly reviewed your recent payments and can see that the cryptocurrency you have purchased has been successfully sent to the destined wallet address from our side.
I would like to elaborate that we do always strive to deliver your coins with the utmost urgency - however, in some cases, this can be delayed due to factors which are outside of our control, such as the demand for the cryptocurrency you are purchasing, the number of miners available, and the volume of transactions occurring on the blockchain at the time of your purchase.
However, if the cryptocurrency does not display in your wallet correctly, it would be helpful to reach out to the support team of your wallet provider. As much as we would love to help, we do not have direct access to your cryptocurrency wallet address or account, therefore, we cannot solve issues related or originating to/from your cryptocurrency wallet.
Thank you very much for your patience and understanding! Please let us know if you have any further queries.
Regards,
Julia
Head Of Customer Support
J
James White美国 · 14 reviews · Experienced 2026-06-29 ·
★★★★★
DO NOT USE SIMPLEX!
This is the worst crypto buying platform ever! I purchased $580 LTC from them and they took my money right away but it took 72 hours and me filing a dispute with my bank to finally get my coin. This is the worst service ever. I do NOT recommend using them.
Reply from Simplex2026-07-15
Hello James,
Thank you for your review.
I would love to help you as best as possible, however, from the information provided I am unable to locate you on our system. Therefore, could you please reach out to me via email [email protected] and elaborate on your case?
I am looking forward to your reply.
Regards,
Julia
Head Of Customer Support
I really liked how easy the process was. The waiting time was under 1 hour ,and my transaction arrived in the wallet. I am satisfied with the payment process. Thank you 😊