Generally, the app is user friendly and pretty, but, not stable enough to bit other similar app in market. I experienced system crush with my external HDD(2TB)audio, and Tidal as well. At first, I disconnected the external HDD and reboot, but, the certain file were still not readable, I found other streamer to plugged the same external HDD, it works perfect, and in other device is working too... eventually, I need to disconnect all cables and reset to factory couple times, till the system can read the external HDD. All my external HDD cover art were shown on other device but not with the Volumio, don’t know how to make it work and finding a solution in the supporting forums like needle in a Haystack, may be I not familiar with those technical terms is other reasons. Last but not least, that will be nice if the power off is Real power off instead of just shut down the system and needs to physically off the hardware again. In conclusion, in terms of price strategy were valued for money to build a streaming device in the total cost with Pi and Volumio! But, if you guys wants to gaining more user in monthly installation in future, please allow me address couple of things: 1. The support link needs to be restructured to be more direct instead of tones of solutions from forum is a must! 2. Free version is good, but, if for the advance user, the differential of each grade of app is bit too confusing, felts not much benefit or fancy enough to pay extra to be a Super Star plan ( like Roon and Audirvana they shown signal path, and MQA supported equipment, which is pointless to myself but tones of pp like it, make pp more engaged and more felt they money are well spend in those sky high pricing) 3. Be more audiophile, now everyone is enjoying streaming service, we all looking for a product aim higher. Didn’t mean to spend $30 to act like a pro and be offensive, but, truly support the way you work, just like to see your product can be more influential in Hifi markets! You could still have a reasonable version for a budget user like me, but, that’s no harm to be more fancy and make advance user felt they were a pro to well spend they money. Wish you guys have all the success in future!! Good job!!