| SimpleStudy | 🍎 | 1 | 4.8★ | Education |
| SimpleTix.com Inc. | 🍎 | 1 | 4.7★ | Business |
| SimpleX Chat | 🍎 | 1 | 4.4★ | Social Networking |
| Simpledio, LLC | 🍎 | 1 | 4.5★ | Productivity |
| Simpleum Media GmbH | 🍎 | 1 | 3.8★ | Productivity |
| Simpli Human LLC FZ | 🍎 | 1 | — | Health & Fitness |
| SimpliSafe Inc | 🍎 | 1 | 4.8★ | Lifestyle |
| Simplias GmbH | 🍎 | 1 | 4.0★ | Productivity |
| Simplicial Software, LLC | 🍎 | 1 | 4.1★ | Games |
| Simplicity Loyalty | 🍎 | 1 | 4.4★ | Food & Drink |
| Simplicity USA inc. | 🍎 | 1 | 5.0★ | Business |
| Simplified Loader Ltd | 🍎 | 1 | — | Utilities |
| Simplifly Incorporated | 🍎 | 1 | 5.0★ | Business |
| Simplify Wellness India Pvt Ltd | 🍎 | 1 | 4.8★ | Medical |
| SimplifyNine Software LLC | 🍎 | 1 | 5.0★ | Food & Drink |
| Simplilearn Americas LLC | 🍎 | 1 | 4.3★ | Education |
| Simply CA LLC | 🍎 | 1 | 4.7★ | Productivity |
| Simply Fun Media | 🍎 | 1 | 4.5★ | Entertainment |
| Simply Good Software | 🍎 | 1 | 4.8★ | Business |
| Simply Local Inc. | 🍎 | 1 | 5.0★ | Productivity |
| Simply Southern restaurant Group, LLC | 🍎 | 1 | 4.9★ | Food & Drink |
| Simply Wall St | 🍎 | 1 | 4.7★ | Finance |
| Simply Workflow Ltd. | 🍎 | 1 | — | Productivity |
| SimplyNow LIMITED | 🍎 | 1 | — | Lifestyle |
| Simplybook | 🍎 | 1 | 4.1★ | Business |
| Simpson & Partners | 🍎 | 1 | 5.0★ | Utilities |
| Simteq A/S | 🍎 | 1 | — | Business |
| Simu Slots Ltd | 🍎 | 1 | 4.6★ | Games |
| Simulation Training Group | 🍎 | 1 | 4.4★ | GAMES_SIMULATION |
| Simulators Live, LLC | 🍎 | 1 | 3.9★ | Games |
| Simutronics Corp | 🍎 | 1 | 4.7★ | Games |
| Sin Yee Fan | 🍎 | 1 | 4.5★ | Business |
| Sina Sima | 🍎 | 1 | 5.0★ | Productivity |
| Sina.Com Technology (China) Co.Ltd. | 🍎 | 1 | 3.3★ | Sports |
| Sinbad | 🍎 | 1 | 3.9★ | Finance |
| Since Kindly, Inc. | 🍎 | 1 | 4.8★ | Lifestyle |
| Sincere Apps | 🍎 | 1 | 4.8★ | Music |
| Sincerely Inc. | 🍎 | 1 | 4.8★ | Photo & Video |
| Sindarin, Inc. | 🍎 | 1 | 4.1★ | Book |
| Sindcon(Singapore) IoT Technology PTE. LTD. | 🍎 | 1 | 4.5★ | Utilities |
| Sindibad vision for travel and tourism | 🍎 | 1 | 4.7★ | Travel |
| Sinem Kanat | 🍎 | 1 | 4.6★ | Photo & Video |
| Sing King Ltd | 🍎 | 1 | 3.7★ | Music |
| Singa Oy | 🍎 | 1 | 4.4★ | Music |
| Singapore Land Authority | 🍎 | 1 | 5.0★ | Travel |
| Singapore Management University | 🍎 | 1 | 5.0★ | Education |
| Singapore Polytechnic | 🍎 | 1 | 3.7★ | Education |
| Singapore Power Ltd | 🍎 | 1 | 4.1★ | Utilities |
| Singapore University of Social Sciences | 🍎 | 1 | — | Education |
| Singgih Surya Dharma | 🍎 | 1 | 2.7★ | Health & Fitness |