Users reported that two-way sync with Outlook Calendar (Windows) occasionally broke after Microsoft's September 2023 updates. Build 6.5.8.1 patches the MAPI interface, restoring seamless bidirectional editing. If you live inside Microsoft Outlook but want LeaderTask’s superior task hierarchy, this update is mandatory.

Version 6.5.8.1 feels like a polished, no-surprises release. Later versions introduced web-based collaboration and UI changes, but this one keeps the classic, responsive desktop interface — everything loads instantly, no cloud lag.

For a one-time purchase app (back then), having Gantt charts, nested tasks, subprojects, and a calendar view in one window is rare. 6.5.8.1’s Gantt isn’t fancy, but it’s fast and printable — great for solo freelancers.

Hold on a second—LeaderTask treats a "Project" as a folder with a completion date, while a "Task" can have subtasks. In 6.5.8.1, you can convert a Task to a Project with one click without losing subtask history .