Harper replaces 3 paid apps
Compare Harper with 3 paid apps. Each pairing describes a recorded use case and its limits; check the current license, feature availability and hosting requirements at the source.
Grammarly KINDA$30/mo
A fast English grammar checker that stays on your device and mostly keeps its opinions to itself.
the verdict →all Grammarly alternatives →
LanguageTool YES$5.47/mo per seat
A fast English grammar checker that stays on your device and mostly keeps its opinions to itself.
the verdict →all LanguageTool alternatives →
Hemingway Editor Plus YESvaries
A fast English grammar checker that stays on your device and mostly keeps its opinions to itself.
the verdict →latest recorded source check 2026-08-06 · up to $420/yr replaced · no votes, no pay-to-list
