Stay reachable to the people who matter.
The people you care about always have your current number. You always have theirs. Nobody has to ask, and you decide — circle by circle — what each person gets to see.
Free · iPhone · No ads, ever
Nobody decides to lose touch.
It happens by default. You text a number you have had for years and it does not land — and you find out six weeks later, from someone else. You move, you send the group text, and two-thirds of people never save it.
Your address book was never designed to fix that. It is a place to keep a copy of what someone told you once, and a copy starts going wrong the moment you save it.
Stay reachable
Their number comes from them.
When you connect with someone on Tether, you are not saving a copy of their details — you are reading theirs. Zoe changes her number tonight, and your phone has it. Nothing to sync, nothing to ask for, no "hey, is this still you?"
It works both ways. Change your own number once and everyone you are connected to has it.
If you each already have the other saved in your contacts, you connect automatically.
A wrong number tells you it is wrong. A wrong address never says a thing.
You text a dead number and it bounces, so you fix it. A dead address just quietly swallows the card — and neither of you ever finds out. That is why the addresses in your phone are the oldest thing in it.
For anyone you are connected to on Tether, you never update their address on this list. Not once, not ever. They move, the card goes to the new place next December, and you never had to notice.
Tether starts you with a Holiday Cards circle and suggests who belongs in it. When it is time, send the list straight to Minted, Postable, or Shutterfly.
On your terms
You decide what each circle sees.
Circles are not folders — they are permissions. Family gets your address. The poker crew gets your mobile. Work gets your work line and nothing else. Change your mind whenever you like; it takes effect everywhere at once.
And you never have to wonder. Open anyone you are connected to and tapHow they see you — that is your card, exactly as it looks to them, with a count of everything they cannot see.
You do not have to build any of this from scratch. Tether starts you with Family, Friends, Community, Professional and Holiday Cards, and suggests who belongs where. Adjust them when you feel like it.
Nobody has to be the person who keeps the list.
The class list. The team. The church directory. The running club, the nonprofit, the neighbourhood group. The extended family planning next year's trip, the small business keeping track of its clients. Share a circle, send the invite link, and it becomes a directory that keeps itself current — no roster for one poor volunteer to chase every autumn, because there is not a roster. Everyone keeps their own details up to date and the whole group gets the benefit.
If you are the person who currently maintains that list: you can stop.
Actually get together
Knowing you can reach someone is the beginning.
See who is free. You want six people in a room. Normally that is four days of group-chat archaeology. Share your availability with a circle, see theirs on the same calendar, and pick a night that already works. Tether reads busy blocks only — never what an event is, never where.
Invite anyone. Host something and invite people who are not on Tether at all. The friend who will never download anything still gets to say yes — they RSVP from a link, no account required.
Remember what matters. The peanut allergy, the kid's name, how you met, what you talked about last time. It is on the card, where you will actually see it.
- You choose every field you share
- No ads, ever
- We do not sell your data
- Export everything, any time
Built so your contacts stay yours.
We make money from subscriptions, not from you. Your address book is not readable by other users, and nobody at Tether has routine access to it. When someone looks for you, the match runs on a one-way hash — there is no directory of our users to leak or sell.
One detail worth knowing: when someone shares a field with you, your phone does not keep a copy of it. It reads theirs, every time. That is deliberate — it means when they stop sharing something, it is actually gone, and no stale copy on your device can hide that.
Free — and not the kind of free that runs out.
2,000 contacts. 15 circles. 12 events a year. Duplicate cleanup, offline access, and your whole address book exportable whenever you want. For most people that is the entire product, for good.
Tether only works when the people you want to reach are here too — so we would rather you join than pay. Tether+ is there for people whose networks got big, and it is what keeps Tether free for everyone else.
Stop being the person who has to ask for everyone's number.
Free · iPhone · No ads, ever