Each UbiBot device comes with the free plan on UbiBot platform that offers 200MB storage and 1GB outbound traffic. The 200MB storage is for lifetime and 1GB of outbound traffic is rotated monthly for each device. For example, if your device takes temperature, humidity and light sensor readings every 10 minutes, the free 200MB storage is enough to store over 2 years amount of data.At anytime you can export the whole data stored and remove the data to reuse the storage that offers in the free plan.
If your use case requires high sensing frequency that generate data on high rate or you do not want to remote the data when the storage space is full, you can upgrade to a higher plan at any time.
You can find more pricing information from here: https://www.ubibot.io/pricing/