Best AI Grammar Checkers in 2026
Updated
In short: LanguageTool is ranked #1 of 26 as of 3 October 2026, ahead of Outwrite and Trinka. The best-ranked option with a free plan is Outwrite. The lowest first paid tier on this page is Ginger at $0.42/mo.
AI grammar checkers can help you catch errors and refine wording wherever you write. Compared on AI rewrite suggestions, custom rules, supported languages, and document integrations, the tools also differ in whether they offer a browser extension or desktop app. Check team administration if you need shared oversight, and weigh free-plan availability against the listed paid-from price. The ranking opens with LanguageTool and Grammarly, followed by Trinka, with Ginger and Sapling also among the early entries. Consider which writing environments you use, how much control you want over style rules, and which languages your work requires as you compare the options.
26 AI grammar checkers ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
AI Grammar Checkers in tiers by the score this site gives them, S at the top. 8 of the 25 on this page have an Android app.
- 5 GrammarCheck.aiAndroid$4/mo 6.9
- 6 GrammarlyAndroid$12/mo 6.9
- 7 Sapling$1/mo 6.9
- 8 GingerAndroid$0.42/mo 6.8
- 9 HarperFree 6.8
- 10 ProWritingAid$10/mo 6.8
- 11 WritefullFree 6.7
- 12 LinguixAndroid$5/mo 6.6
- 13 ScribensAndroidFree 6.6
- 14 PoliFree 6.5
- 15 AntidoteAndroid€4/mo 6.4
- 16 ORFO 6.4
- 17 QuillBotFree 6.3
- 18 TyplxFree 6.3
- 19 Slick WriteFree 6.2
- 20 Microsoft Editor 6.1
- 21 WordeepAndroid$8.25/mo 5.9
- 22 Grammalecte 5.7
- 23 GrammarCheck.net 5.6
- 24 SpellBoy 5.6
- 25 Write WiseAndroid 5.5
Is your app on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which AI grammar checker is ranked first on Everything Xiaomi?
LanguageTool is ranked #1 of 26 with a score of 7.3. Outwrite is second and Trinka third.
How many of these have a free plan?
16 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, Ginger has the lowest first paid tier we found: $0.42/mo.
How is this list ranked?
Ranked on what each maker publishes: documentation depth, a free tier and the platforms it runs on. Paid placements never change a rank.