156+ iOS apps & games curated and reviewed
The best o2togo apps and games on iPhone average 4.5★ across 156+ titles — we've ranked them by what real users actually keep on their phones. Updated June 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 4.5★ (8) | No | No | May 2026 |
| 2 |  | Free | 3.0★ (2) | No | Yes | May 2026 |
| 3 |  | Free | 4.5★ (180) | Yes | No | Jul 2026 |
| 4 |  | Free | 3.1★ (11) | No | No | Jun 2026 |
| 5 |  | Free | 4.9★ (75) | No | No | May 2026 |
| 6 |  | Free | 4.8★ (63K) | No | No | Jul 2026 |
| 7 |  | Free | 4.9★ (297K) | No | No | Jul 2026 |
| 8 |  | Free | 4.8★ (9) | No | No | May 2026 |
Calculates remaining oxygen in a cylinder for ambulatory users. Input device, liter flow, and cylinder size for precise remaining hours and minutes. Provides peace of mind for oxygen users on the go.
This utility app converts oxygen cylinder pressure into remaining time, helping users manage their compressed gas resources. It provides visual indicators and calculates duration based on tank size, current pressure, and flow rate.
Manage your mobile plan, monitor usage, pay bills, and get exclusive benefits. Easily add new services, contact support via chat, and even get new SIM cards for your family.
This app provides a virtual training environment for healthcare professionals to learn and practice mechanical ventilation techniques. It simulates ventilator interfaces and patient physiology, allowing users to experiment with different strategies and observe real-time outcomes in a safe, controlled setting.
Access a comprehensive library of training materials and product information for medical professionals. This app offers free mobile access to how-to videos, manuals, and guides for critical ventilator equipment, developed in partnership with leading manufacturers.
This mobile banking app simplifies money management with features like early direct deposit, high-yield savings, and overdraft protection. It offers transparent banking with no hidden fees and tools to build credit. Secure and convenient access to funds nationwide.
This app offers a comprehensive suite of services including ride-hailing with various vehicle classes, scooter rentals, food delivery from restaurants, and online shopping for a wide range of products. It also facilitates package and cargo delivery, and provides public transport schedules in select cities.
This medical tool provides accurate and flexible acid-base analysis for healthcare professionals. It offers detailed explanations, customizable ranges, and advanced features like anion gap correction and A-a gradient adjustments for various patient conditions and locations.
This app offers a comprehensive suite for business communications, including calling, messaging, and virtual meetings. It facilitates team collaboration, customer engagement through a multi-channel inbox, and seamless participation in online events. Stay connected and productive from anywhere with this all-in-one mobile solution.
Grow your cell by consuming smaller cells and avoiding larger ones in this online multiplayer game. Master tactics like splitting and dodging to become the biggest cell. Unlock secret skins with special usernames.
Discover exclusive deals and discounts tailored just for you. Stay updated on local McDonald's news, including games and competitions. Access detailed nutritional information and find nearby restaurants with directions.
This app offers a wide range of soothing sounds and calming music designed to help users relax, meditate, and achieve deep, uninterrupted sleep. It provides tools to overcome insomnia and improve mental well-being by blocking out distracting noises and creating a therapeutic atmosphere.
This app classifies mechanical ventilation modes based on a recognized medical taxonomy. It provides images and details for numerous ventilators worldwide, including manufacturer and model information.
Discover significant discounts on fresh groceries like produce, meat, and dairy from major retailers. Easily browse deals, purchase items within the app, and pick them up the same day. Reduce food waste and save money on your weekly shopping.
Engage in a thrilling multiplayer online game where you control a blob, consuming smaller entities to grow and avoid larger ones. Compete against real players, unlock new features, and customize your blob with unique skins.
This app connects neighbors to share unwanted items, from food to household goods. Give away what you don't need and find useful items from others nearby. It's a community-driven platform to reduce waste and help people save money.
Discover and purchase surplus food from local businesses at discounted prices. Reduce waste, save money, and enjoy tasty meals while helping the planet. Explore nearby restaurants, cafes, and grocery stores for surprise bags of delicious food.
Easily track your IRS tax refund status directly from the official IRS website. Get updates on your refund, understand potential delays, and access tax transcripts for past returns.
Experience the classic strategy of Five in a Row on your mobile device. Challenge AI opponents across five difficulty levels or play against friends. Customize your game with various board sizes, piece sets, and a board editor.
This app uses your breath to create interactive visuals, promoting calmness and relaxation. Developed by doctors, it offers personalized feedback and exercises to improve sleep and reduce stress. Enjoy offline access and robust privacy features.