When comparing Cocos2d-x and Cocos2d Family vs RunKeeper, the Slant community recommends RunKeeper for most people. In the question“What are the best 2D Lua game engines?” RunKeeper is ranked 2nd while Cocos2d-x and Cocos2d Family is ranked 6th. The most important reason people chose RunKeeper is:
The app is available for [iOS](https://itunes.apple.com/us/app/id300235330) and [Android](https://play.google.com/store/apps/details?id=com.fitnesskeeper.runkeeper.pro).
Ranked in these QuestionsQuestion Ranking
Pro A proven engine for mobile development
25% of iPhone games are made using Cocos2d-x (A Cocos2d mobile variant.)
This means you will not be alone in development, and will have access to a large community. You'll know you are developing for an engine that works.
Pro Supports 3D models with skeleton animation
A new feature since Cocos2d-x v3.1 is support for 3D models (in your 2D game), not only this but support for skeleton animations is included too! This awesome feature allows for impressive characters in your game along with easier, more fluid and realistic animations.
Pro Great script language support
Especially with Cocos2d-JS you can develop games cross web and native, and the native solution have great performance with JS Bindings, much better than hybrid solution.
Pro Highly active community for questions and support
Cocos2d-x forums are active.
Cocos2d-x is not only open source but also supported by Chukong Technologies of China and USA.
Regularly updated and adding support for the latest technologies. 2014 has already seen the release of Version 3, a new Cocos Studio development toolkit (optional) and support for new technologies like skeleton animation systems Spine and Adobe DragonBone.
Pro Greater performance than high level APIs
Cocos2d-x is C++ based engine and it has CPU advantages for most platforms because of that. It uses polygonal mesh methods for sprite rendering for using GPU advantages. (You also use quad methods for benefit CPU).
Pro Allows for easy debugging
It has a built-in Python interpreter that allows for easy debugging.
Pro Great video tutorials
Hundreds of video tutorials available.
Pro OpenGL hardware acceleration
Pro Easy integration of 3rd party plugins
For example, if you want to add a rating plugin, you use
sdkbox::PluginReview::init(); and if you want to add the Vundle Ad Network SDK, you use the one packaged in SDKBox
Pro No external dependencies
Because it is based on Pyglet.
Pro Simple interface
The interface is clean and easy to use.
Pro Great for Interval Training
Interval lengths can be set and RunKeeper will let know when to start and stop running via audio messages.
Pro Tracks distance, duration, speed, pace and calories burned
RunKeeper displays your route using Google Maps and tracks distance, duration, speed, pace and calories burned. You can also input your runs manually (useful when running on treadmills) to add them to your "workout logs".
Pro Website has detailed statistics
Stats such as top speed, speed of each interval, fastest/slowest parts of a course, etc. Where applicable, graphs and maps routes will be display for a visual representation.
Pro Add photos to your runs
To make the memorable runs easy to remember why they were memorable.
Pro Gives audio cues
Pro Works with Pebble smartwatches
You will have to download the app both on your phone and Pebble.
Pro Can chart weight
Pro Perfect localization for interface and voice
Pro Integrates with many accessories
Pro Works with Android Wear
Con Poor documentation
Most existing documentation is out of date. API documentation sometimes exists, though is usually just a one-liner and more often than not is completely absent. New features and significant system rewrites often make it to a major release without a single line of documentation accompanying them. Cocos2d-x family is developed by Chinese mostly, so market outside of China is not their main priority. Some tools (like Cocos Studio) have China-specific services and markets.
Con Poor support and non-existent community
Up until 2013, this was one of the best engines around. However, since then it was bought by a Chinese company and began stagnating - it's virtually in a slow death. Most developers abandoned Cocos in favor of more modern solutions leaving the community weak and the forums with little or no traffic. Although the Cocos2d-x Forum seems to have a decent community going.
Con Cocos2d-html5 is way behind Cocos2d-x
While Cocos2d-html5 tries to mimic it's Cocos2d-x sister and has the same people working on it, it has lots of restrictions compared to Cocos2d-x: no Spine mesh support, no 3D models, bad text label quality, etc.
Con Fragmentation; hard to find useful tutorials
Cocos2d family includes different projects: cocos2d-x, cocos2d-html5, cocos2d-objc, cocos2d-XNA. Most tutorials describe techniques specific to single project of the family, and cannot be applied to other projects.
Con Can seem very complex for a novice developer
There isn't much documentation or tutorials.
Con Modest functionality
Almost all free alternatives are more convenient, faster, and more functional.
Con GPS sometimes fails
The GPS sometimes fails on devices that rely on WIFI for GPS (Apple ipod touch). However, GPS can be fixed manually later.
Con Slow and heavy for old smartphones
Con Does not announce split pace properly when using kilometers
Con Doesn't optimize for WGS-84 GPS on map
The track path draw on map is wrong cause WGS-84 GPS format.