A hiker's field journal

Write every trail into your journal.

Trailquill is a local-first hiking journal and trip manager for iPhone. Log the trails you’ve walked, plan the next trip with pack lists, see your trailheads on a map, and ask Scout, the AI trip planner, for help.

Effective November 9, 2026

Private by design

Your journal is stored on your iPhone. Scout sends your messages and, unless you turn it off, a short journal summary only when you ask it something and have agreed to the AI consent screen.

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Contact

Trailquill is made by an individual developer. Email dinhthiloan8838@icloud.com.