Vanta

Getting capture right on mobile is the hardest part of any GTD setup — too much friction and the inbox never fills; too much cloud dependency and privacy-conscious users opt out entirely. Vanta addresses both by building the full five-step GTD workflow (capture, clarify, organize, reflect, engage) into a Markdown-native iOS app with no required account. You drop thoughts into an inbox by typing or dictating, tap ‘Clarify with AI,’ and the app proposes which items belong in Next Actions, Waiting For, Someday, Done, or Trash — you confirm or adjust each one. Next Actions stay pinned at the top by @context, and a weekly review surfaces stalled projects and open Waiting For items automatically.

The differentiating feature is where the AI runs: entirely on the device, with no network request required. The vendor states nothing is uploaded, and the app works offline. That means the same AI-assisted inbox processing and dictation cleanup works on a plane or in a dead-signal area — a meaningful constraint for anyone whose capture habit has been broken before by connectivity requirements.

Vanta fits a solo iOS user who already lives in Obsidian or wants to. The app renders syntax-highlighted code, callouts, tables, images, SVG, wikilinks, and backlinks in a format the vendor describes as matching Obsidian output, and favorites sync with Obsidian’s native bookmarks. The sync path is iCloud or a private GitHub repository — no proprietary middleman. Where it breaks: there is no Android version, no web or desktop client, no API for automation, and no shared-vault or collaboration model. A user whose GTD system needs to live on more than one platform, or whose team needs to read the same projects, will hit that wall immediately and look elsewhere.