Tane (種, "seed"; from tanemaki 種まき, "to sow seeds") is a local-first, decentralized app for keeping and sharing traditional seeds. Every traditional seed is a letter written by thousands of generations, passed from hand to hand. Tane helps people and seed-saver collectives keep a friendly inventory of their bank, decide what they offer, and share it locally — without a central intermediary that could control, censor, or be fined for it. MANAGE YOUR BANK • Add a seed with just a photo and a name — no Latin required. • Note the year, how much you have, where it came from, germination tests. • Search and filter; snap a photo now and name it later. YOURS, AND ONLY YOURS • Your seed book works with no internet at all. What you write stays on your phone; nothing goes out unless you put some of your seeds up for sharing, or write to someone. • Everything is encrypted at rest on your device. • No account, no sign-up, no ads, no trackers. • Save an encrypted backup and keep a printed recovery sheet — restore your whole bank on a new device. SHARE, THE WAY IT'S ALWAYS BEEN DONE • Mark what you have spare to give away, swap or sell. • Print a catalog of what you share to take to a seed fair. SHARING NEEDS THE INTERNET Keeping your seed book needs nothing but your phone. Sharing does need a connection: to get an offer or a message across to someone, Tane leaves it on community servers — machines run by people, not by a company. Tane comes with four: relay.comunes.org, which Asociación Comunes runs (the same people who make Tane), plus three public ones that others already use — nos.lol, relay.damus.io and relay.primal.net. Tane only talks to them when you choose to: first to have a look at what people share (that sends nothing about you), then, if you write to someone or share your seeds, after agreeing to the community rules. Before that it doesn't connect to anything, and messaging stays switched off. When you write or share, those servers see the key that stands