The Over AchieverGuides
GTD guides
Practical, honest guides to running the Getting Things Done® method in a modern app: what the method says, what it costs to skip a step, and how to set it up in The Over Achiever.
Comparison
GTD Apps Compared: iPhone, Android and Web (2026)
Six GTD apps compared feature by feature — GTD lists, reviews, horizons, context, energy and time filters, attachments, calendar, platforms — from what each vendor publishes.
Updated · 3 min read
GTD guide
GTD Contexts, Energy and Time Available: How to Pick the Next Action
The four-criteria model for choosing what to do now, which contexts still make sense, how to tag energy and time without over-tagging, and how to filter on all of them at once.
Updated · 9 min read
GTD guide
GTD Horizons of Focus: Setting Up Purpose, Vision, Goals and Areas in an App
The six GTD horizons explained, why most apps stop at areas of focus, and how to model purpose, vision, goals and areas so your weekly and monthly reviews use them.
Updated · 9 min read
GTD® and Getting Things Done® are registered trademarks of the David Allen Company. The Over Achiever is not affiliated with or endorsed by the David Allen Company.