- SiamoLaRoma
- Sibben Cup
- Sicoris
- SIDAM
- Side Fitness
- Side Kicks Karate
- SideChatz
- Sidekicks Martial Arts
- SideLine Broadcast
- Sideline Hawaii by ESPN 1420
- SideLine Live
- Sideline Manager
- SideLine Scout Controller
- SideLine Scout Viewer
- SidelineSwap
- Sidepots - Keglerz Client
- Sierra at Tahoe Ski Resort
- Sierra Nevada Escuela Ski
- Sierra Sage Golf Course
- Sierra Vista Herald/Review
- Sifup
- SIG BDX
- SIG Game Day
- SIG Strasbourg
- Sightmark Generator
- SIGMA EOX®
- SIGMA LINK
- SIGMA MOVE
- SIGMA RIDE
- SignalFlags Tool
- Signals - Ride Better at Night
- Signature Fitness NJ
- Signee Timer
- SIJHL
- SIL
- Silat Scoring
- Silat Training
- Silence Night : Hidden Objects Free
- SILive.com
- Silkwayrally - Шёлковый путь
- Silo - League Community App
- Silo Point Country Club
- Siloam Springs Panthers
- Silver & Black Illustrated
- Silver Club Golfing Society
- Silver Creek Valley
- Silver Forest Rowing Club
- Silverbell Golf Tee Times
- Silverdale Athletics
- Silverlakes Tournaments
- SilverRock Resort - La Quinta
- Silvretta Montafon App
- Sim Racing Telemetry
- Simba SC
- Simon Webb's Pool Workout
- Simone Giovani
- Simone Giovani Fitness Coach
- Simonhöhe
- Sinister Kettlebell
- Simple Badminton Scoreboard
- Sinister Kettlebell
- Simple Badminton Scoreboard
- Simple Basketball Scoreboard
- Simple Basketball Tactic Board
- Simple Darts Scoreboard
- Simple Fit: Stay Healthy
- Simple Futsal Scoreboard
- Simple Golf GPS
- Simple Greyhound Racing
- Simple Gym Trainer
- Simple Handball Scoreboard
- Simple Ice Hockey Scoreboard
- Simple Interval Timer
- Simple Interval Timer - S.I.T.
- Simple Karate Scoreboard
- Simple Kicking
- Simple Metronome and Tuner
- Simple Pace Calculator
- Simple Photo Finish
- Simple Run Tracker
- Simple Soccer Scoreboard
- Simple Soccer Tactic Board
- Simple Speedometer - Speed Meter with GPS Internet for Car, Bicycle, Bike, Running, and Walking
- Simple Stopwatch App
- Simple Tabata Workout Timer
- Simple Table Tennis Scoreboard
- Simple Tennis Scoreboard
- Simple TOPO
- Simple Volleyball Scoreboard