C4 Indoor for Wear OS
Focus on climbing,
not your screen.
The climbing experience on your wrist
Log every attempt, fall, or send directly from your watch. Keep your focus on the route and leave your mobile device untouched between burns.
Seamless climbing without technical friction
In bouldering or route climbing, rhythm and concentration are everything. Yet conventional digitization imposes cumbersome interruptions: unlocking screens with chalked fingers, dragging devices across crash pads, or risking damage at the base of the wall.
With the official release for Wear OS by Google, C4 Indoor brings essential climbing log operations directly to your smartwatch. A clean, immediate tool engineered to record your activity without interrupting your session.
Direct on-wall logging
Log attempts, falls, and sends with minimal friction. The circular interface and hardware controls of Wear OS let you record every burn in seconds, backed by instant haptic feedback so your eyes never leave the rock.
Protect your gear
Stop hauling your smartphone across crash pads or leaving it exposed at the base of the wall to chalk dust and impacts. Keep it secure and untouched in your locker or pack.
Total focus & rhythm
Maintaining your mental rhythm between burns is critical to sending. C4 Indoor on Wear OS eliminates screen clutter and notification noise, keeping your focus locked on the climb.
Two Ways to Train: Universal and Connected Ecosystem
Built for the independent climber on any wall, and fully integrated for facilities running the C4 Indoor platform.
Autonomous Mode (Universal)
Any Gym or Outdoor Crag
Climb at any gym worldwide or outdoors on real rock. Log style, grade, and attempt volume, ensuring every burn adds to your account's unified track record.
- Efficient logging of style, grade, and attempt volume.
- Responsive counter for attempts, falls, and sends.
- Dedicated training support: Hangboard, Campus Board, and Conditioning.
- Local storage with unified cloud synchronization to your C4 Indoor profile.
C4 Ecosystem
Connected Mode
In C4-partnered gyms, the app links directly with facility equipment. Climb with total freedom and, upon wrapping up your session (in our hallmark Beer Mode), link your burns to real gym routes: sector, hold color, grade, and setter.
- Beer Mode & Post-Activity Match: Climb without tapping screens. After your session, match your burns to the gym's live routes (sector, hold color, grade, and setter).
- Facility Integration: Seamless alignment with the gym's active routesetting inventory and circuits.
- Official Gym Records: Your sends feed verified statistics, member rankings, and community progression.
Dedicated Training Support
The app extends beyond standard climbing routes, featuring dedicated interfaces designed for athletic conditioning and finger strength:
Hangboard Module
Log grip types (full crimp, half crimp, open hand) and edge depth or hold size on your hangboard.
Campus Board
Track set volume and explosive upper-body moves without feet.
Physical Conditioning
Log auxiliary exercises and added loads (weighted pull-ups, lock-offs, or core work).
100% Independent Operation
The application is architected natively to operate without real-time smartphone tethering. Leave your phone in the locker or deep inside your pack: the watch stores your session data locally and uploads it automatically to your C4 Indoor profile upon network reconnection.
Getting Started
Start recording your climbing directly from your Wear OS smartwatch in three simple steps:
1. Download
Search for C4 Indoor on Google Play Store directly from your Wear OS smartwatch (or install via your web browser).
2. Link Your Account
Open the app on your wrist and enter your quick-pair code to link your C4 Indoor profile.
3. Climb
Select your climbing mode, pick your home gym if it is part of the ecosystem, and start logging.
Compatibility & Ecosystem
Smartwatches running Wear OS 3 or higher.
Do you manage a Climbing Gym?
Your climbers are already wearing smartwatches on the mats. Now they can channel their training directly into your walls and routes.
The C4 Indoor for Wear OS integration strengthens member engagement by delivering high-fidelity performance metrics across your setting.