RollTogether: Compare and Send

Compare camera rolls with someone nearby, see which photos each of you is missing, and send only the ones you choose. Directly, iPhone to iPhone. No accounts. No servers. No cloud. Your photos never leave your iPhone unless you select and send them. After a trip, a wedding, or a weekend away, the two of you each hold half the pictures. RollTogether puts two iPhones in the same room, works out exactly which photos the other one lacks, and lets each of you hand over what you want to share. Nobody uploads anything. Nobody browses anyone's library. HOW IT WORKS 1. Find. Open RollTogether on both iPhones. They discover each other nearby. Nothing is shared by connecting. 2. Pair. Both iPhones show the same six-digit code. Confirm it once; after that, the two reconnect from Recent without a code. 3. Choose. Pick a date range, a preset, a year, or a place you both went. Compare says how many photos it covers before you start. 4. Compare. Each iPhone fingerprints its own photos, and the two exchange only blinded fingerprints. What you're missing is a number. What they're missing are your photos, shown only to you. 5. Share. Choose from a gallery of your photos they don't have and send. They accept, the originals transfer directly, and land in their Photos library and a RollTogether album. Both people can send at the same time, and both keep browsing while photos move. PRIVATE BY DESIGN • During a comparison, the only things that cross between the phones are counts and fingerprints blinded with a key that exists for that session alone. No thumbnails, no filenames, no locations, no identifiers. • Nobody can browse the other library. The app has no way to show you a photo you don't already own. • Sharing is always the sender's choice: select, confirm, and the other person accepts before a single byte moves. • Transfers are end-to-end encrypted between the two iPhones. The code you both confirm rules out anyone in the middle. • No internet connection needed. The app has no server and no analytics, and collects nothing. • Limited Photos access works. Only the photos you allow are compared. THE SAME PICTURE, EVEN WHEN THE FILE DIFFERS A photo that came back through a messaging app, a downscaled export, or a format conversion is the same picture with different bytes. RollTogether recognizes it, flags which of your photos are a better copy than the one they have, and sets aside your worse copies so you don't offer someone a crushed version of what they already own. Either person can switch this off. MORE • Photos, videos, and Live Photos are compared and transferred. Live Photos arrive as Live Photos. • Edited photos arrive looking edited. Send All Photos Data to include the original and its edits, re-editable on the other side. • Switch off Include Location to strip GPS and place names from everything you send. • Compare one place. The app clusters your photos into the spots you were, and both iPhones compare the same area. Only the rough area is shared, never a photo's own location. • Photos stored only in iCloud are set aside rather than blocking. One tap downloads and includes them. • Interrupted? Compare again. Photos already transferred match and drop out of the missing set. • Received photos are grouped by transfer and headed by who sent them. • Fast Transfers: on supported iPhones, pair two iPhones once in iOS and transfers skip the network entirely. GOOD TO KNOW RollTogether needs two iPhones running iOS 18 or later, in the same room, with the app open on both. It uses Wi-Fi and Bluetooth to find and connect to the other iPhone, and asks for Local Network permission to do so. Only your own library is compared, and photos you receive are saved into it. Compare privately. Choose locally. Share intentionally. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/