What it costs, and what it never does

The backup costs you whatever your storage provider charges, and nothing at Opensolr. Here is what to expect, and the rules the app keeps to.

• Your provider: space, by the gigabyte per month; a small amount for the uploads, once; download traffic when files come back to a phone. Every provider publishes its prices; the numbers below are an idea of the shape, not a quote.
• For 200 GB of photos at a large provider: a few dollars a month for the space, under a dollar for the uploads once. A restore to a new phone brings the photos as 720p copies, a few gigabytes, plus your videos and PDFs whole, charged as download traffic.
• A NAS or a server you already run with WebDAV costs nothing more.
• Opensolr: nothing. Your files never pass through Opensolr, and a restore sends nothing to be read, so no AI request is used. See plan limits.

• One backend per index, at a time. To use another, change it.
• Two kinds: S3 and WebDAV. No Dropbox, Google Drive or OneDrive connectors: the point is storage that answers to you, not to another account.
• The folder or bucket must be reachable from the phone; a NAS behind your router is reachable on your home Wi-Fi, or through a VPN on the phone.

• The phone never sends a file of yours through Opensolr. It talks to your storage directly, with the credentials you gave.
• Never writes outside the index's folder in your storage. See what is written.
• Never deletes a file in your storage on its own: only an item you delete in the app, and Clear backend, with your typed confirmation.
• Never takes a photo out of your index when you change, forget or clear a backend; Clear warns first when photos exist only there.
• Never touches the index because of the backup. Your words, people and places are the same with or without one.
• Never runs on mobile data unless you said so, and never below 10% battery.