FLEX vs UDB
| FLEX | UDB | |
|---|---|---|
| Free plan | No | No |
| Free trial | No | Yes |
| Paid from | — | — |
| Open source | No | No |
| Platforms | iOS | extension, Linux |
| Free plan | Yes | No |
| Supported languages | Objective-C, Swift | C, C++ |
| Target platforms | iOS Simulator, physical iOS devices | Linux |
| Remote debugging | No | Yes |
| Conditional breakpoints | — | Yes |
| Exception breakpoints | — | Yes |
| Time-travel debugging | — | Yes |
| Core dump debugging | — | Yes |
Both are listed in Best Debuggers. On The Geeks Club, UDB scores higher on our published basis.