- Sign Studio
- Signal Flags
- Signal Flags Communicator
- Signal Flags Info
- Signal Flags International
- SignalAir
- SignalFlags Tool
- Signalisation Routière – Quiz
- SignalLearning
- ICS Academy: Nautical signals
- SignBank
- Signing Savvy Member App
- Signs and Cues
- SigrasApp
- SII
- Siionin matkalaulut
- SIKA MiljöAppen
- Sikh Hukamnama : Daily Mukhwak, Nitnem, Live Kirtan, Guru Granth Sahib, Katha
- Sikh Pro : Hukamnama, Nitnem
- Sikh World
- Sikh World - Nitnem & Gurbani
- Sikhipedia
- Sikhipedia
- SikhiToTheMax
- SikhNet Daily Hukamnama
- SikhNet Stories
- Sipradi Stars(Sikka)
- SikkerHverdag
- SilageSnap
- Sille
- Siltech
- Silver Screen (Classic Movies)
- SilverCloud
- Silvergate
- Silvianna for Anilist
- Simcoe County Collects
- SIMED
- Simple and Clear
- Simple Bilingual Education
- Simple Cards: Training Tool
- Simple Christmas Songs
- Simple English Bible - offline
- Simple Factors
- Simple Flags
- Simple Furigana
- Simple Guides For AutoCad
- Hiragana
- Simple Islamic Prayer Times
- Simple Local Weather
- Simple Machines by Tinybop
- Simple Map
- Simple News ~Easy news app~
- Simple Paper Model-Hobby Craft
- Simple percentage PERCENT
- Simple Quran
- Simple Recipe Cookbook
- Simple Songwriter
- Simple Songwriter LE
- Simple Tables: 0-12 Flashcards
- Simple Thai Dictionary
- Weather ´
- Simple Wordbook
- SimpleLink™ Wi-Fi® Starter Pro
- SimpleMe