kamal K.
Excellent
1. Great customer support 2. Timely delivery of cgms and accessories 3. Original high quality products provided 4. Excellent app , includes experts support 5. Value for money
Ambrosia is a technology company, maker of electronic device BluCon which reads NFC tag and uses CR2032 battery, it can send data to any Bluetooth enabled connected device. It can be used for many different purposes like NFC-based payment, ticketing, c...
Ambrosia Systems (ambrosiasys.com) has 52 customer reviews on Five Star Index, with an average rating of 2.0 out of 5.
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Claim this listingInternet & Software · El Monte, California
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52 approved reviews, newest moderated first
kamal K.
1. Great customer support 2. Timely delivery of cgms and accessories 3. Original high quality products provided 4. Excellent app , includes experts support 5. Value for money
William H.
I preordered a Rizz ring in August of 2025, #246565. I received a sizing kit in September 2025 which I sent in the day after receiving it. On September 30, 2025, I received an email saying “Your RIZZ will now be ready November 15, 2025. Since then, I’ve received 2 emails saying my ring will be shipping soon. On February 16, 2026, I received an email saying that they were out of black and silver color Rizz rings and could they ship me a Gold color ring. I replied any color would be fine. I’ve not heard back since. Ridiculous.
Response from Ambrosia SystemsMar 26, 2026
Thank you for your patience, and we sincerely apologize for the delay and lack of timely updates. Your order (#246565) has now been delivered on March 9, 2026. We understand the frustration caused by the shifting timelines and limited communication, and we take full responsibility for that experience. We appreciate you sticking with us through this, and we’re working to improve both fulfillment timelines and communication so this doesn’t happen again. Please feel free to reach out if there’s anything further we can assist you with.
KG
I receive daily spam from this company from 50 different email addresses (shown below some of the addresses and fake sender names they use). I had to seek help from our IT department to filter this heavy load of spam. Why does anyone trust a company which resorts to such corrupt business practices? ambrosia.care ambrosia.systems ambrosiasys.com ambrosiasystem.com ambrosiasystemsinc.com ambrosiasystems.us rizzhealth.com rizzcgm.com Sender names are: contact@ fmia@ helen.mayer@ laura.mayer@ mia.flaherty@ mia@
Response from Ambrosia SystemsMar 26, 2026
Thank you for bringing this to our attention. We take concerns like this very seriously. Ambrosia does not send unsolicited emails from multiple addresses or engage in spam practices. It’s possible that a third-party affiliate, reseller, or unrelated actor may be misusing our name, which we are actively investigating. Please share one or two sample email headers or sender addresses with us at contact AT ambrosia sys com so we can trace and take appropriate action. We also recommend unsubscribing or marking such emails as spam in the meantime. We appreciate you flagging this and will work to resolve it promptly.
Ali A.
The rizz ring ordered but not yet received. Its been more than 4 months now. No response from customer care to emails. Messages etc. When I opened case with PayPal. They immediately replied that they have gold color available but I hadn't approved and they created a shipping label on UPS to delay the PayPal case. This is scam company. Keep away
Response from Ambrosia SystemsMar 26, 2026
Dear Sir, We’re sorry to hear about your experience and would like to clarify a few points regarding your order. Your RIZZ was delivered on February 16, 2026. The shipment was processed only after receiving your confirmation to proceed with the available color option. Prior to shipping, you were also offered the option to cancel your order for a full refund, which you chose not to pursue. Our records also indicate that the ring has been successfully set up and is in use. That said, we regret any frustration caused during the process, particularly around communication and timelines. If you need any assistance or have further concerns, please feel free to reach out. We’re here to help.
Averil C.
Agreed with many here about the non appearance of the Rizz ring. Especially disappointing as a previous user of Nightrider which I found helpful I was happy to invest in the promised ring. As indicated by others getting the size kit took time but arrived eventually. Many contacts with promises but no actual product delivery. I mail received end of Jan telling me it was being shipped next week. Guess what… no shipping info and no product They must be having a considerable laugh at the diabetic community.
Response from Ambrosia SystemsMar 26, 2026
Thank you for your continued patience, and we sincerely apologize for the delay. You’re absolutely right that your order has taken longer than expected. We understand how frustrating this has been, especially given your prior positive experience with NightRider. We are expecting to ship your chosen color within the next two weeks and will share tracking details as soon as it is dispatched. We truly appreciate your support and regret the inconvenience caused.
Jim L.
I ordered the Rizz ring back in August of 2025. It’s now February of 2026 and I haven’t received it yet. I’ve contacted them multiple times demanding a refund but each time they say that it’s about to ship but ignore my refund request. It’s become obvious that this is nothing more than a scam company. Please avoid!!
Response from Ambrosia SystemsMar 26, 2026
We’re sorry to hear about your experience, and this is certainly not the experience we aim to provide. We’re currently unable to locate your order based on the information available here. Could you please email your order number and details to contact AT ambrosia sys com ? If your order has not been delivered, we will promptly review the case. We appreciate your patience and look forward to resolving this for you quickly.
Nicolas T.
Crappie company delays since July order was supposed to be sent by October again delays i am opting for a refund its been 2 weeks of my request and kept ignoring me. Cannot trust them . Product also looks like a scam the RISS RING. AVOID ...although they acknowledged refund I had to keep asking and being ignored and look at the other reviewers same story. Poor customer service and doubtful about the technology and people are not getting their items. Avoid cleaning clear hassle had they paid me when asked I would not have written this
Response from Ambrosia SystemsMar 26, 2026
Dear Nicolas, We’re sorry for the delays and communication gaps you experienced. This is not the level of service we aim to provide. Your refund has been fully processed as requested, and we acknowledge it took longer than expected. We are actively improving our fulfillment and support processes. Regarding the product, RIZZ is used by customers globally, and we continue to enhance both the technology and user experience. Given your experience, we believe it’s best that we do not proceed with any future orders. We wish you the best in finding a solution that better meets your expectations. Best regards, Ambrosia Team
Stefania F.
I am sharing my experience to help other customers make an informed decision. Order 246592 involved the purchase of smart ring Rizz. As part of the process, I received a sizing sample rings box, which is normal and expected. However, the final product was never delivered. Multiple tracking numbers were generated for the shipping (after 2 months of delay) neither of which shows confirmed carrier acceptance or delivery. One appears stalled, the other last tracking was 2 weeks ago from JFK. The only shipment successfully delivered was the sizing sample using UPS in September. Despite this, a tracking related to a different shipment was provided to PayPal, which resulted in the case being closed, even though the final product had not been received. The order still appears as ON HOLD on the company website, and fast shipping (39 USD) was paid but not provided. I have repeatedly requested either delivery with proper express shipping or a refund, without resolution so far. This review reflects documented facts and my direct experience. UPDATE – December 30, 2025 Additional tracking was shared after this review, but the product has still not been delivered and fast shipping was not provided. The situation remains unresolved. 1-04-2026 In reply ad Ambrosya: Thank you for your reply. A refund does not resolve the core issue. The product itself does not work as expected, and this is the main problem — not just the delay or the communication. Receiving an item late is one thing. Receiving an item that simply doesn’t deliver what it promises is another. Your response focuses on logistics, but completely avoids addressing the actual performance and reliability of the product. From a customer’s perspective, this feels like a generic reply rather than a real attempt to take responsibility. I hope you will take this feedback seriously, because improving shipping is not enough if the product itself is not effective. In replay: Dear Ambrosia Team, Thank you for your reply. However, stating that the product “is functioning as intended” does not reflect my experience as a customer. A product should work reliably in real-world conditions, not only under ideal setup assumptions. If correct setup, specific conditions, or additional guidance are required to obtain basic functionality, this should be clearly communicated upfront. From my side, the issue was not a lack of willingness to use the product correctly, but the fact that the results did not match what was promised. Offering step-by-step support after the purchase does not change the initial experience, which was disappointing. At this point, my feedback remains the same: the problem is not just usability, but the overall reliability and consistency of the product in everyday use. I hope this helps you better understand the customer perspective. 3th april 2026 Dear Ambrosia Team, Thank you for your reply. I appreciate the acknowledgment, but I would like to clarify a few important points. The explanation related to setup, placement, or individual physiology does not align with my experience. I have tested the ring on different fingers and under normal usage conditions, and the results remain inconsistent. At the same time, I am currently using other sensors and another smart ring, all under the same conditions, and they provide stable and reliable data. This makes it unlikely that the issue is related to my physiology or usage. For this type of product, reliability should not depend on “ideal conditions” or extensive troubleshooting after purchase. It should work consistently in everyday use. I also find it important to highlight that this follow-up is happening several months after my initial experience, which impacts the overall perception of support and responsiveness. I remain open to testing improvements, but based on my experience so far, the core issue appears to be related to data reliability rather than setup or usage. Regards, Stefania BTW I have installed and tested the beta version of the app, but the same issues remain. At this point, it is possible that my specific unit is defective. However, I am not willing to spend additional money on returns or replacements, considering the initial cost of around €300 and the experience so far. For comparison, the same amount would cover several weeks of reliable measurements using dedicated sensors. I am fully aware that a smart ring cannot match the accuracy of a medical-grade sensor. However, I would expect at least consistent and regular readings. Currently, the data is irregular and unreliable — for example, multiple readings within a short time frame followed by long gaps of several hours — which makes the system difficult to trust in everyday use.
Response from Ambrosia SystemsMar 26, 2026
Dear Stefania, Thank you for taking the time to share such detailed feedback. We understand your concern, and we agree that real-world reliability and consistency are what ultimately matter. While many users are able to get meaningful insights from RIZZ, we recognize that your experience has not met expectations, and that is something we take seriously. These systems can be sensitive to factors such as setup, placement, and individual physiology, but that does not change the fact that your experience should have been smoother and more reliable from the start. If you’re open to it, our team can work with you directly to review your setup and usage in detail and help you get the intended value from the product. At the same time, if you feel the product is not meeting your expectations, please reach out to our support team and we will be happy to assist you further, including discussing available options. Your feedback is valuable and helps us continue improving both the product and overall experience. Best regards, Ambrosia Team