Appcode

AppCodean Objective-C IDE that makes a difference

Xcode3 - most horrible IDE ever…Not stableBad VCS integration (only

SVN&CVS)No unit tests integrationRefactoring that breaks codeNo tabsNightmare with code signingFew customization optionsPoor project navigationsNo live syntax checking

Xcode 4!

JetBrains AppCode

FeaturesSmart code assistanceQuick code navigationLive code analysis and transformationFull Xcode support I18n supportPowerful refactoring toolsVCS Integration Issue trackers integrationUnit tests integrationFully customizable Plugins Fast, less cpu and memory usage

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jetbrains.com/objc30 days trial

$99 for personal usefree for open source projects