We’ve been using their service over 1 year now with multiple sensors per customer (we are currently testing 50+ active customers right). They have handled all my requests within 24hr even if that meant getting back up at 5am just ask them they will help no matter what time zone etc.. In terms of price...it is pretty cheap but we were already paying $100/mo from another vendor so its not really an issue in our case :) Great product! Highly recommended especially when looking towards scalability down road which means IoT services should also scale well - definitely something worth considering before going forward w other solutions like AWS lambda or Google pubsub messaging....they both require some level expertise & maintenance overhead too IMO vs sending simple sms messages straightaway without worrying about any technical details + monitoring costs associated along side these complex cloud offerings)!!! Good luck guys!! Hope your team has great success!