Help
Short answers. If yours is not here, reply to any email Radius has sent you, or write to [email protected] — a person answers.
Something wrong?
On the phone: Settings → Help → Report a problem. On the web: Account → Report a problem. Say what you were doing and what went wrong; it goes to a person at Radius with what the app already knows attached — its version, the phone, and the last time it crashed — and you get a copy by email so you can reply with more. Or just email [email protected].
If Radius ever closes on its own, the next time it opens it sends what happened — the error and the version — so it can be fixed without you doing anything. It carries no location, no messages, and no names; only what broke. If you noticed the crash, a one-line problem report saying what you were doing at the time is the most useful thing you can add.
Get the app
Sign in on the web (or sign up — same door), and the Get the app tab hands you the current build with its version and date, plus the Wear OS watch app. Android and Wear OS only; no iPhone app yet. The current build is ….
Radius is not on Google Play yet, so Android says "not allowed to install unknown apps from this source" — the standard message for any app outside the store. Allow your browser in that prompt, and if Play Protect then offers Scan app, let it. When the Play listing arrives the same app updates itself from there; until then it updates itself from here.
Your account
There is no separate sign-up form. Sign in with Google, or with your email address or phone — a six-digit code is sent to you, good for ten minutes and one use — and if that address is new, the code creates your account on the spot. No password to make up. The same account works in the app and at radiusfamily.com/app; on the web, Sign out is at the top right, and signing in with a different address switches accounts.
Settings → Two-factor. Scan the code with any authenticator app (Google Authenticator, Aegis, 1Password) and keep the ten backup codes somewhere safe. From then on every sign-in — app, web, Google — asks for a code. No SMS codes, which are the ones worth stealing.
Settings lists every phone, watch and browser signed into your account. Sign any one of them out from any other. Losing a phone is a tap, not a crisis.
Settings → Delete account, or from the web. Messages, photos, history, places, circles and connections go, with the files removed from the server's disk. It asks twice because it cannot be undone.
Your family plan
Tap Add someone. Pick from your linked people, or type an email address or phone number. Someone who already has Radius is linked to you and on your plan at once; anyone else gets the app by message and is on your plan the moment they sign in with that address. Nothing to approve.
The card lists everyone, with "Manager", "On the plan" or "For life" under each name, and how many of the four seats are used. Remove next to a name takes them off; they keep Radius only through their own plan or free month.
During the free month the card says how many days are left and offers Keep it going after the free month. Once paying, Change card, see receipts, or cancel opens Stripe's own page. Cancelling runs the plan to the end of the month already paid for.
One more for a year · $9.99 — pick the person, pay once, and they have Radius for twelve months whatever happens to the plan later. They do not take one of the four seats.
You can do both. Your card shows Managed by … above Your family plan; add your own people below and they see you, not the family above. Leave the plan you sit on at any time from that card.
Settings → Radius → Have a code?. A code from Radius unlocks the app for you — or, for some codes, makes you the manager of a free family plan.
Who sees what
People → circles. Each circle says whether the people in it see your location and your history; pause a whole circle for a while. Nobody is told which circle they are in.
Yes, in any web browser — sign in at radiusfamily.com/app. You get the map, messages, Activity (who arrived where and left where, and when, plus severe weather near anyone), each person's history, the family plan and find-my-phone. What a browser cannot do is report where you are: only the Android app does that. An iPhone app is planned.
You, the manager, decide — with your circles. Everyone on your plan sees you. Two people on it see each other only while you have them in the same circle: Sam files Alex under Partner and Riley and Jo under Kids, so Riley and Jo see each other and Sam, and Alex sees only Sam. Everyone you add starts in Family, together; move people to split them up. Their own circles are their own filing and change nothing.
Places → your place → Edit → Share: only you, chosen circles, or everyone who can see you. Home suggests everyone; a new place starts private.
Places → their card → On map / Hidden, per pin. Their choice to share it; yours whether it is drawn.
Same card: Tell me when Alex: [arrives] [leaves] for each place you both have. Separate notifications with their own times. Muting somebody silences these too.
Open the conversation → mute. Their messages stop making a sound, their calls cannot ring your phone, and their comings and goings go quiet — from them only.
Settings → Show what I am listening to. Off by default; needs notification access on the phone, and reads only the media title, never notifications.
Questions
Positions, messages, calls and alerts work anywhere the phone has GPS and data. The map is drawn for North America (US, Canada, Mexico). Address lookup covers the United States. Turn-by-turn directions cover the whole United States, on Radius's own routing. Radius is built for the United States first and says so.
Not yet. Radius is Android and Wear OS today. An iPhone app is on the roadmap for after Android is fully settled — a family that is half iPhone should wait for it rather than be sold something that only half works.
No. Nobody is added until you approve them by name and face, sharing is mutual so anybody who can see you can be seen by you, and while Radius is sharing your location a notice sits in your notifications that cannot be dismissed.
Only the people each person has approved, and only as much as that person allows. Positions live on Radius's own server — not on Google's, not on a data broker's — and nothing about them is sold, mined, or used for advertising. There is no company that profits from knowing where your family are.
Family Plan: $1.99 a month for up to four people (six if you switched from another app and brought them), after a 30-day trial, every feature. Family Plan+: $2.99 a month for up to ten — your plan moves between the two by itself as the family grows or shrinks, prorated. Family Member Add-on: $9.99 a year for one named person — beyond ten, or someone who should not take a seat; they keep the year even off the plan, then get the ordinary countdown and the $1.99 offer.
Ten days, then deleted automatically. Messages are kept for fourteen. You can keep conversations longer on your own phone or in your own Google Drive.
Not if they can help it. The server carries the introduction — a few kilobytes — and the call goes straight between the two phones whenever the network allows. On most mobile networks it does not: two phones behind carrier-grade NAT cannot reach each other directly, and the call is relayed through Radius's own server instead. When that happens the call screen says so. A relayed call is never recorded, stored, or listened to — the relay forwards packets it cannot read.
Yes, from inside the app, and it means it: messages, photos, history, places, circles and connections, with the files removed from the server's disk rather than just hidden.