| Unrot OÜ | 🍎 | 1 | 4.7★ | Productivity |
| Unsplash Inc | 🍎 | 1 | 4.9★ | Photo & Video |
| Unstoppable Domains | 🍎 | 1 | 4.5★ | Utilities |
| Unstuck Developments LLC | 🍎 | 1 | 4.9★ | Health & Fitness |
| Untappd, Inc | 🍎 | 1 | 4.9★ | Food & Drink |
| Untis GmbH | 🍎 | 1 | 4.4★ | Education |
| Untitled Tech, Inc. | 🍎 | 1 | 4.9★ | Photo & Video |
| Untold Garden | 🍎 | 1 | — | Entertainment |
| Untold Sky | 🍎 | 1 | 2.0★ | Business |
| Unuhi LTD | 🍎 | 1 | 4.7★ | Education |
| Unum Group | 🍎 | 1 | 4.8★ | Business |
| Unusual Circumstances Inc. | 🍎 | 1 | 4.4★ | Lifestyle |
| Unusual Whales Inc | 🍎 | 1 | — | FINANCE |
| Unvale | 🍎 | 1 | 4.8★ | Social Networking |
| Unyon Games | 🍎 | 1 | 5.0★ | Education |
| UofHappy, LLC | 🍎 | 1 | 4.8★ | Lifestyle |
| Uomagrit Oy | 🍎 | 1 | — | Productivity |
| Uooi Property Management Ltd. | 🍎 | 1 | — | Business |
| Uova Oy | 🍎 | 1 | 4.7★ | Photo & Video |
| Up Desenvolvimento de Tecnologia Ltda | 🍎 | 1 | 4.1★ | Finance |
| Up Money | 🍎 | 1 | 4.7★ | Finance |
| Up North Fun LLC | 🍎 | 1 | — | TRAVEL |
| UpGrad Education Private Limited | 🍎 | 1 | 4.8★ | Education |
| UpHabit | 🍎 | 1 | 4.3★ | Productivity |
| UpLife Inc. | 🍎 | 1 | 4.7★ | Health & Fitness |
| UpLift Health Inc. | 🍎 | 1 | 4.5★ | Medical |
| UpMenu | 🍎 | 1 | 4.7★ | Food & Drink |
| UpNote Company Limited | 🍎 | 1 | 4.7★ | Productivity |
| UpSurgeOn | 🍎 | 1 | 4.5★ | Medical |
| UpToDate, Inc. | 🍎 | 1 | 3.7★ | Medical |
| Upd8All Limited | 🍎 | 1 | 5.0★ | Productivity |
| Upfit | 🍎 | 1 | 3.9★ | Health & Fitness |
| Upflex Inc. | 🍎 | 1 | 3.7★ | Business |
| Upfront Pay Pty Ltd | 🍎 | 1 | — | Productivity |
| Upgrade Consulting, LLC | 🍎 | 1 | 4.4★ | Games |
| Upgrade, Inc. | 🍎 | 1 | 4.9★ | Finance |
| Uphance LLC | 🍎 | 1 | — | Business |
| Uphold HQ Inc. | 🍎 | 1 | 4.7★ | Finance |
| Upily | 🍎 | 1 | 4.4★ | Education |
| Uplandme, Inc | 🍎 | 1 | 4.1★ | Games |
| Uplift Educational Solutions | 🍎 | 1 | — | Education |
| Uplisting | 🍎 | 1 | 1.6★ | Productivity |
| Uplyft Innovations Private Limited | 🍎 | 1 | — | Health & Fitness |
| Upmind Inc. | 🍎 | 1 | 4.6★ | Health & Fitness |
| Upper Room Ministries | 🍎 | 1 | 4.6★ | Lifestyle |
| Uppercut Games Pty Limited | 🍎 | 1 | 4.8★ | Games |
| Upperpik Oyun Yazilim ve Pazarlama Ticaret Anonim Sirketi | 🍎 | 1 | 4.6★ | Games |
| Upright Labs, Inc | 🍎 | 1 | 4.0★ | Shopping |
| Uprise Labs Bilgi Teknolojileri Anonim Sirketi | 🍎 | 1 | 4.6★ | Health & Fitness |
| Uprise iX LLC | 🍎 | 1 | — | Health & Fitness |