Tether - Outdoor Safety

Safety check-ins by real SMS

Only for iPhone

Free

iPhone

Your people know where you are, automatically. Tether texts your location to someone you trust while you paddle, hike, ride, or sail — no app needed on their end. Tether is a safety check-in app for solo outdoor athletes — paddlers, hikers, trail runners, mountain bikers, offroaders, and sailors. Pick a trusted contact, choose how often they hear from you, and go. While you're out, Tether automatically texts your location to that person at the rhythm you chose — real SMS, so it works without internet and they don't need an app. Any phone works. A BREADCRUMB TRAIL, NOT A PANIC BUTTON • Start, check-in, and end messages frame the trail, so a missed update is never ambiguous • Every check-in includes a map link and your battery level • Out of coverage? Tether records your position and sends it the moment signal returns, marked as late — no false alarms • If your planned time runs out unanswered, your person gets one calm message with your last known location BUILT FOR THE WATER AND THE TRAIL • High-contrast, sunlight-readable screens with oversized controls for wet hands and gloves • The active screen answers three questions at arm's length: Is it running? When is the next check-in? Are messages getting through? • Pause anytime — Tether reminds you if you forget to resume • Full dark mode for pre-dawn starts HONEST ABOUT THE GAPS Tether needs cell coverage to send, and says so — to you and to your person. A missed check-in usually means no signal, not an emergency. Tether is not a substitute for 911 or satellite SOS. For life-threatening situations, use emergency services or a dedicated satellite beacon. PRIVATE BY DESIGN Your location is never uploaded to any server. It goes directly from your phone to your chosen contact by SMS, only during sessions you start. No account, no tracking, no ads.

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The developer, Apollo, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    Team Apollo Ltd
    Size
    2 MB
    Category
    Health & Fitness
    Compatibility
    Requires iOS 18.2 or later.
    • iPhone
      Requires iOS 18.2 or later.
    • Apple Vision
      Requires visionOS 2.2 or later.
    Location
    This app may use your location even when it isn’t open, which can decrease device battery life.
    Languages
    English
    Age Rating
    4+
    Copyright
    © 2026 Team Apollo Ltd
  • Developer Website
  • Privacy Policy

    • More by Apollo

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