B4X vs Felgo

B4X is a suite of rapid application development tools for Android, iOS, desktop, server, and IoT projects. Its B4X language is described as a modern version of Visual Basic, and B4A, B4J, and B4i projects can share 90%+ of their code through cross-platform libraries. B4A includes a GUI designer for multiple screens and orientations and supports device debugging over USB or a wireless bridge. B4J creates desktop interfaces, console programs, and server solutions that can run on Windows, Mac, Linux, and ARM boards such as Raspberry Pi. B4R targets Arduino, ESP8266, and ESP32. The maker says compiled iOS, Android, Arduino, and ESP8266 applications are native and have no dependencies. B4A, B4R, and B4J are free, including for commercial purposes. Standard B4A and B4i licenses cost 59.00 USD once per developer. B4i requires an Apple developer account costing $99 per year, an iOS 11+ device, and Windows 7 64-bit or a VM for its IDE.

Felgo is a native cross-platform SDK based on Qt for building applications, games and embedded software. Developers mainly use QML and JavaScript, with C++ also supported. Felgo Live updates QML and JavaScript on connected devices after a save, without waiting for build and deployment steps. The Game Engine focuses on 2D casual games and includes Box2D physics, particles, multi-touch and animations. Felgo Apps can use device features such as cameras, sensors and file systems, alongside networking options including WebSockets, Bluetooth LE and NFC. Browser-based Cloud Builds can build and deploy projects from Felgo Cloud IDE. Game Network offers achievements, leaderboards, challenges, cloud storage and offline support. Listed targets include Android, iOS, Windows, macOS, Linux and web. Personal has an annual turnover limit under €50k. Startup costs €79 a month, billed annually per developer, and has a turnover limit under €100k. Business costs €245 a month, billed annually, and has no annual turnover limit. Felgo offers a free plan and a free trial.