When comparing GLBasic vs GDevApp, the Slant community recommends GLBasic for most people. In the question“What are the best 2D game engines?” GLBasic is ranked 76th while GDevApp is ranked 83rd. The most important reason people chose GLBasic is:
Language is easy to use, with a fast compiler.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Easy to develop with
Language is easy to use, with a fast compiler.
Pro Fast 2D
Pro Easy to learn
Pro Support
Forum support is great. No advertising in program or forums. Company has been going for over 10 years.
Pro 3D
Unlike most multi-platform development systems, 3D is available across most of them.
Pro Multi-platform
Code can be written once and will work on supported platforms with very little modification.
Pro No hidden fees
PC version is free.
Full Multi-platform version requires one-off very reasonable price, and all further updates are free, however you can run a watermarked demo on your chosen platform with the free demo version.
Pro C/C++ support
C/C++ code can be included inline or as a DLL/.o/dylib file.
Pro HTML 5 compiling is now faster and works better
Pro Default GUI system works fine, and has all the needed widgets needed
Only problem is position is based on position of previous widget.
Pro Compiler is fast and produces efficient code
Pro Free for home development
Create apps for non commercial 2D programs running on Windows, Linux and Mac OSX. The extension to create programs for other platforms, 3D or network applications requires a license key. Otherwise the "Premium" programs are limited to 10 min runtime for test purposes. There is no trial limit for the development environment.
Pro Networking
Easy-to-use networking system with either TCP or UDP.
Pro Books
Programmers reference guide, user guide and various others are free.

Pro Gaming related functions
Viewports, sprites, rotating/animating and zooming sprites, collision detection and pathfinding.
Pro Quickly add behaviors to objects
Prebuilt behaviors can be added to objects. This is a very efficient way to add a physics engine or make a platformer game.
Lots of behaviors are included, from the most advanced (Physics, platformer, top-down movement) to really simple ones (like the behavior to destroy objects when outside the screen or the one to drag objects with mouse or touch).
Pro Powerful events system to create games without programming
No need for coding using this system which is clear and powerful: events are composed of conditions and actions.
Actions are launched when conditions are fulfilled. This is a very beginner-friendly way of making games and is still efficient for advanced usage, contrary to most other "block"/"drag'n'drop" systems.
Pro Intuitive interface
Pro Based on GDevelop
The entire webapp is based on GDevelop, an open source native game development software available for Windows & Linux, so it benefits from its advanced development.

Pro Can download an archive of the game source
Even though the tool depends on having a server up and running, you can download a copy of your game to run locally, or host somewhere else.
Pro Great UI
Sleek and user-friendly UI.
Pro Can export your game as HTML5 and for Android
Games can be packaged for Android without relying on any third party tool. You can also export your game and download it to host it on your server or let it be hosted on GDevApp.com.
Pro Shallow learning curve
Cons
Con Command set has hardly changed or been updated/improved over the years
Con Poor 2d collision detection with rotated sprites
2d sprite rotation with collision detection isn't present and requires some annoying run-arounds to achieve what is a staple of other game engines.
Con No multi-platform editor
Whilst Linux and Mac IDE's were started, they were never completed.
Con No clear way to monetize apps
It's impossible to place ads. There is a third party in-app purchase library hidden somewhere deep within the forums which hasn't been updated for years.
Con Issues don't get fixed
The Blender exporter and the 3D converter have been broken and remain unfixed for years.
Con Only supports .ddd 3D format
This format does not support bones and only keyframe animation. 3d files will become extremely large if there are animations in models.
Con HTML 5
HTML 5 compiling is rather slow, and doesn't allow all GLBasic features
Con Poor GUI creation library
Its library for GUI creation is abysmal and not acceptable.
Con Poor documentation
There is next to no documentation on using OpenGL commands in GLBasic.

Con Depends on a hosting service
If the website goes down or closes down, you'll no longer be able to develop your games using this system (but you can download a backup of your game from time to time and open it with GDevelop).
Con Cannot deploy native games
For now, games developed with GDevApp can only be deployed for the Web. Android deployment is in the works, but even then, they won't be native since they are built with web technologies.
