Best Free Grammar App Course

237+ iOS apps & games curated and reviewed

4.6 avg rating
19 free apps & games
Updated November 2026

Grammar is the household name in free grammar app course, but it's far from the only option. We track 237+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Compare top Free Grammar App Course (November 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Grammar: Sentence DiagrammerGrammar: Sentence DiagrammerFree4.4★ (1.1K)YesYesNov 2026
2100 English Grammar Rules100 English Grammar RulesFree—NoNoMay 2026
3Easy English Grammar in ActionEasy English Grammar in ActionFree—NoYesSep 2026
4Learn and Test GrammarLearn and Test GrammarFree—YesNoOct 2026
5Grammar+: English Learning AppGrammar+: English Learning AppFree4.8★ (26)NoYesOct 2026
6Learn English Grammar CheckerLearn English Grammar CheckerFree4.6★ (610)NoYesNov 2026
7English Grammar - BookEnglish Grammar - BookFree4.8★ (459)NoYesNov 2026
8PORO - English GrammarPORO - English GrammarFree4.8★ (87)YesYesNov 2026

Top Picks for Free Grammar App Course

Grammar: Sentence Diagrammer#1
4.4😊(1.1K ratings)
FreeAdsIn-App Purchases
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Improve your writing with this app that offers grammar and spelling checks, synonym suggestions, and word definitions. Enhance your text style and vocabulary for professional and personal communication.

What We Love

  • 👍 Easy to use
  • 🚀 Helpful for writing and grammar
  • 💡 Provides useful suggestions
  • 🚀 Accurate grammar and spelling corrections
  • 👍 Intuitive app interface

Room to Improve

  • 🐛 Occasional glitches and bugs
  • 🤔 Limited functionality compared to expectations
  • 💬 Annoying pop-ups asking for reviews
  • 🤔 Inconsistent performance in detecting errors

More Free Grammar App Course apps to explore

FAQ about Free Grammar App Course

What is the best free grammar app course for iPhone?
Grammar: Sentence Diagrammer tops our free grammar app course ranking as of November 2026, with a 4.4-star average from 1.1K App Store ratings, and it's free to download.
Grammar: Sentence Diagrammer shows ads and offers in-app purchases, according to its App Store listing as of November 2026.
We track 237+ free grammar app course on the iOS App Store as of November 2026, ranked by rating, recency, and analysis of real user reviews.