Never Lose Your Group, Never Lose the Route.
Manage group rides safely with live location sharing, one-tap SOS, and a community hazard map. Retanza is the smartest way to prepare for granfondo.
A Smart Companion Behind Every Ride
Group Ride
Create a tour with QR code, track participants on the map in real time.
Training Tracker
Log rides and strength workouts, track your heart rate zones.
Hazard Map
Share road damage, slippery surfaces, and blind corners with the community.
Nutrition & Supplements
Track macros and never miss your supplement timing.
Analytics
Visualize your performance with your Strava data.
Cyclist Spots
Find nearby cafes, repair shops, and rest stops.
Join a Group Ride in 3 Steps
Create a Tour
Pick a Strava route or just give it a name. A QR code is generated instantly — add a PIN if you want.
Invite Your Group
Share the QR, friends join and appear on the map within seconds.
Ride Together
Stay in control with live positions, one-tap SOS, and hazard reports.
Your Data, Your Control
Location data is transmitted only during active rides and deleted when the ride ends
Hazard reports are anonymous — who reported it is never revealed
Health data (HR, supplements) is stored only on your device
KVKK and GDPR compliant
If ads are shown, they are always marked with a "Sponsored" label
SOS — one tap instantly sends an emergency alert to all tour participants
Medical info sharing — health details entered before a tour are shared only with participants, never stored on servers
Cyclists Protect Each Other
Retanza's hazard map makes your route safer before every ride. With community reports, you can spot rough asphalt, slippery surfaces, and blind corners in advance.