Epic Online Services vs OneSignal

Epic Online Services is a suite of modular online services for game developers. Its service areas cover accounts and social features, multiplayer, player and game data, and trust and safety. Social capabilities include crossplay, friends, presence, overlay, and the Epic Games account ecosystem. Multiplayer tools include peer-to-peer features, sessions, lobbies, and voice chat. Developers can use leaderboards, stats, achievements, and storage for player and title data. Trust and safety services include Easy Anti-Cheat, sanctions, player reports, and Kids Web Services. The services can be used with Unreal Engine, Unity, or a developer's chosen engine. SDKs are available for PC in C or C#, Android, and iOS; console SDKs require a request through the Developer Portal. Epic describes the service as free to use, with no royalty or hosting fees, though usage restrictions may apply. Epic says it processes game-service data to operate the services and does not share partner data without explicit authorization. Use may be throttled or suspended for violations of service restrictions.

OneSignal is a messaging platform for reaching audiences through mobile and web push, email, in-app messaging, RCS, SMS and Live Activities. It also provides audience segmentation, automation, analytics and a visual journey builder. SDKs are available for Android, iOS, Flutter, React Native, Expo and Unity, and the service connects with analytics tools, customer data platforms, warehouses and CRMs. An API is included, with unlimited message-delivery API send access across plans. The Free plan costs $0 per month and includes all channels, basic automation and analytics, AI and MCP, and basic personalization. It includes 20,000 free email sends monthly; additional sends cost $1.50 per 1,000. Growth starts at $19 per month, plus usage fees, and is billed month-to-month. Professional and Enterprise use annual contracts with custom pricing. Growth customers can change plans or downgrade to Free at any time without penalty. OneSignal is available on web, Windows, macOS, iOS and Android.