Polish
Grammar checking in English, Portuguese, Spanish, and French — sixteen regional variants — and spell-check in English, Portuguese, and Spanish across five dictionaries. All offline, in the license, on your disk, yours to keep.
Spelling
Offline spell-check in English, Portuguese, and Spanish, in the editor where you write — not in a website you paste into.


Grammar
Real grammar checking — agreement, tense, the classic confusions — in English, Portuguese, Spanish, and French, from downloadable grammar packs with sixteen regional variants. Included once, running on your machine. Packs are downloads, not uploads.
Checks
Echoes, repetition, pacing, dialogue mechanics, style rules, crutch words, vague openers — Quill's prose checks are deterministic rules written in plain text. Read them, edit them, write your own Check Packs, share a pack with your writing group. Tools in this category charge every year. Quill doesn't.


In context
Every finding surfaces inline, on the sentence it's about — no jumping to a report and back. Read it in context, act on it or dismiss it, and the Findings dock stays out of your way until you want the full list.
Statistics
Prose statistics per chapter and per book — lengths, rhythms, the words you lean on — presented to inform a revision, not to gamify one.

The trial is 30 days of actual use — days you don't write don't count. Buy once; every 1.x update is included.
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