Sendr: Rock Climbing & Topos

DevBrainStorm

In-app purchases

About this app

Sendr is the complete rock climbing and bouldering platform built for your entire outdoor and indoor progression. Discover 3D crag topos, navigate approach trails offline, track rock friction weather, log every ascent, and train smarter with Sendr Coach.

From discovering new rock climbing crags and planning approach hikes to logging sends and structured hangboard training, Sendr replaces fragmented guidebooks with a single vertical operating system.

🗺️ 3D CRAG MAPS & CLIMBING TOPOS
Explore detailed climbing areas, bouldering sectors, and global rock climbing routes.
• Hardware-accelerated 3D terrain maps and cliff elevation
• Detailed crag topos with annotated route lines, bolt counts, and anchors
• OpenBeta climbing database integration and community beta
• Filter crags by grade range, climbing style, approach time, and wall aspect
• Built-in video beta player to watch and share route sequences

🧭 OFFLINE MAPS & APPROACH GPS NAVIGATION
Never get lost on the approach again.
• Download offline maps, crag topos, and route info before heading into the backcountry
• Turn-by-turn walking directions to the base of the crag
• Path Studio: create and follow custom approach trails across off-trail terrain
• Off-route audio alerts if you stray more than 30 meters off trail
• Community waypoints for crag parking, clean drinking water, and vanlife spots

☀️ CRAG WEATHER & SOLAR SHADE CALCULATOR
Know exact climbing conditions before you pack your rack.
• Real-time rock friction score based on weather, humidity, and rock substrate
• Astronomical solar aspect calculator: drag the slider to see when a cliff goes into sun or shade
• Hourly crag weather forecasts and RainViewer live precipitation radar overlays
• Condition alerts: know when your project enters optimal friction windows

🧗 COMPREHENSIVE CLIMBING LOGBOOK & VOICE TICKS
Build an authoritative record of your climbing progression.
• Multi-discipline logging: sport climbing, bouldering, trad, multi-pitch, and gym sessions
• Hands-free voice logging: record ascents, attempts, and beta notes at the base of the rock
• Seamless grade conversion across 8 international grading systems (V-Scale, Font, French, YDS, British Trad, UIAA, Saxon, Ewbank)
• One-click CSV logbook import from 8a.nu, Mountain Project, and UKClimbing (UKC)

📈 ADVANCED PERFORMANCE ANALYTICS
Transform your tick list into actionable athletic insights.
• Dynamic grade pyramids for bouldering and sport climbing
• 6-axis Weakness Radar (Crimps, Slopers, Pinches, Overhangs, Slabs, Endurance)
• 365-day activity heatmaps and volume tracking
• Acute-to-Chronic Workload Ratio (ACWR) and finger tendon strain accumulator

🧠 SENDR COACH & ADAPTIVE TRAINING
A longitudinal progression engine grounded in climbing sports science.
• Beyond a generic AI chatbot: Sendr Coach maintains a longitudinal model of your physiological capacities, critical force, and recovery
• Multi-week periodized training plans (Base, Strength, Power Endurance, Peaking, Deload)
• Interactive hangboard timers: Max Hangs, Repeaters, and Density Hangs
• ARC endurance trainer: live biometric heart rate guidance (Apple Health & Google Health Connect)
• Closed-loop adaptation: plans adapt dynamically to fatigue, schedule changes, or trip goals

🛡️ SAFETY BEACON & LIVE WEB TRACKER
Climb with certainty in remote environments.
• Public Web Live Tracker: stream live GPS coordinates, altitude, and heart rate to family via a web link with zero login required
• Overdue Safety Return Beacon: automated alerts dispatched to emergency contacts if you are overdue from the crag

🤝 CLIMBER RADAR & VANLIFE COMMUNITY
Connect with local climbers and road-trippers.
• Climber Radar: find partners matching your grade, discipline, and schedule with GPS privacy fuzzing
• Vanlife mode: discover free camping, overnight parking, and campfire meetups

Download Sendr today. Discover crags. Navigate approaches. Log every send. Train smarter. Break your climbing plateaus.