Pricing
Text sync is on the house. File attachments come with a plan.
On free plans sync is allowed within 50mb. Data is kept for 60 days max. It means if no devices go online during 60 days, relay will purge the data. But if device goes online after that, it will sync data again all right.
So this only means that if you have only one device and you lost access to it, you want to restore loose-leaf account, you have 60 days from the last sync to restore your account. In all other cases it should be fine and just sync without issues. If you opt-in for account in settings menu, loose-leaf will send you reminders.
I aimed to make loose-leaf a store for everything, so organically that includes photos, videos, and other files. This is possible on paid plans where you receive significantly more storage. And if you buy annual plan, relay will hold your data not for 60 but for 365 days since last sync date.