- RTI ResearchMobile
- RTR Pilates
- RTRO
- RTRT.me
- Rub Scrub : Fun Kids Game
- Rubato-life
- Rubi Hair
- Ruby Waxx
- RubyRepeat
- Rud Hair
- Ruderverein JGS Kassel e.V.
- Rudy & Kelly Salon
- Ruffo Bruno
- Rufus, the Bear with Diabetes
- RuFV Gustav-Rau Westbevern
- Rugby Ontario
- Rugby Player Stats Tracking
- Rugby Scorebook + Stats
- Rugby Training
- Ruggengraat.com
- Ruma Hair Salon
- Rumba Y Timbal Dance Studio
- Rumbl app
- Rumbl Trainer
- Rumble App
- Rumble Boxing Inc.
- Rumble Heart
- Living to 100
- Rumpfzirkel
- Running Tracker by Runiac
- Run 10k - couch to 10k program
- Run 5k - couch to 5k program
- Run 5K: Start Running
- Run An Empire
- Run and Burn - Running Trainer
- Run assist - a personal coach
- Run Badge Hunter
- Run Club - Melbourne
- Running to Lose Weight Tracker
- Run Diary
- Run Diary Pro
- Run Faster (Couch-To-5K, 10K, Half-Marathon and Marathon Running) With Chinese Massage Point - FREE ...
- Stride For Good
- Run Half Marathon
- Run Healthy: Money Run 3D
- Run in the Dark 5K & 10K
- RUN interval - Running Timer
- Run Jordan Virtual Run
- Run Live 13_5
- Run Mapper
- Run Measure Converter
- Run on Earth
- Run Pace
- Run Photo - for Strava, Garmin
- Run races
- Run Record - Training Volume
- Training plans by Run Roster