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Best Writing Assistance Apps for iPhone (2026)
Grammarly: AI Keyboard & Voice is the top-ranked of 18 writing assistance apps on iPhone, at S tier with 4.7/5 from 226,598 ratings.
- 1
Free + IAP · ★ 4.7 · 226,598 ratings · score 97 - 2
Free + IAP · ★ 4.6 · 121,797 ratings · score 96 - 3
Free + IAP · ★ 4.7 · 18,978 ratings · score 94 - 4
Free + IAP · ★ 4.7 · 13,921 ratings · score 92 - 5
Free download · ★ 4.8 · 6,633 ratings · score 88
What belongs in this list
Get help writing messages, emails, and other text with suggestions and drafting while typing.
Not here: Grammar checking alone; Study help or homework answers alone; Writing lessons alone; A book or essay writing tool alone; A general chatbot that could be prompted to help write alone
How we pick
For this list we ask the App Store the same searches a person would, in several countries, and keep every app it returns. A model reads each app's listing and rejects the ones that only mention the use case. Every app that stays is scored out of 100 from four parts, each 0 to 100 and averaged with no weights: its App Store rating, how many people rated it, where the App Store itself ranks it for this list's searches, and how recently its current version shipped. An app showing Apple's Editors' Choice badge gets a fifth part of 100, which can only lift its score. Tiers follow fixed score bands: S from 90, A from 80, B from 70, C from 60, D from 50, F below. The list's leader is S if it scores 80 or more. On a list of 20 or more ranked apps, a tier from S to D takes in new apps only up to a quarter of the top 40: an app pushed out of a full tier falls to the next tier with room, and F takes the rest. An app already in a tier keeps its place while the tier is at most 2 apps over a quarter; past that, only the apps over that margin go down, lowest score first. Equal scores share a tier, and no app has a better tier than an app ranked above it. An app keeps its tier until its score passes the band edge by more than 1 point, or a full tier or the order above moves it. Only the top 40 of a list get a tier. Read the full method →
Compare every app
- 1Free + IAP · ★ 4.7 · 226,598 ratings · score 97 · best in class
- 2Free + IAP · ★ 4.6 · 121,797 ratings · score 96 · best in class
- 3Free + IAP · ★ 4.7 · 18,978 ratings · score 94 · best in class
- 4Free + IAP · ★ 4.7 · 13,921 ratings · score 92 · best in class
- 5Free download · ★ 4.8 · 6,633 ratings · score 88 · excellent
- 6
Free + IAP · ★ 4.9 · 21 ratings · score 86 · excellent - 7
Free download · ★ 4.8 · 9,785 ratings · score 84 · excellent - 8
Free download · ★ 4.7 · 3,283 ratings · score 80 · good - 9
Free download · ★ 4.5 · 5,117 ratings · score 78 · good - 10
Free download · ★ 4.6 · 3,493 ratings · score 72 · good - 11
Free + IAP · ★ 4.5 · 17,451 ratings · score 66 · situational · provisional - 12
Free download · ★ 4.8 · 2,523 ratings · score 65 · situational · provisional - 13
Free + IAP · ★ 4.6 · 2,567 ratings · score 65 · situational - 14
Free + IAP · ★ 5.0 · 4 ratings · score 61 · situational · provisional - 15
Free + IAP · ★ 4.7 · 30 ratings · score 54 · weak - 16
Free download · ★ 5.0 · 1 ratings · score 52 · weak · provisional - 17
Free · ★ 4.2 · 279 ratings · score 36 · avoid · provisional - 18
Free · ★ 4.4 · 186 ratings · score 35 · avoid · provisional
Beyond the top 18
1 more, not ranked yet
New in the last 30 days
- TypeAI: AI Keyboard & Writer (S)
- AI Writer: Email Letter Essay (A)
- Friday AI Email Writer (A)
- Proofreader AI Grammar Checker (B)
- Wave AI Keyboard, Fonts, Skins (B)
- Ginger Writer (B)
- WhizAI for WA (C)
- ParagraphAI: Writer & Keyboard (C)
Questions people ask
- What is the best writing assistance app for iPhone?
- Grammarly: AI Keyboard & Voice, S tier, ranked #1 of 18, rated 4.7 by 226,598 people.
- Which writing assistance apps are free?
- 18 of 18 are free to download: Grammarly: AI Keyboard & Voice (S), Microsoft SwiftKey AI Keyboard (S), TypeAI: AI Keyboard & Writer (S), AI Keyboard - Smart Writing (S) and more. 9 of them sell in-app purchases. 2 report no in-app purchases.
- Which writing assistance app has the best App Store rating?
- AI Writer: Email Letter Essay at 4.8 from 6,633 ratings.
- How many writing assistance apps reach S or A tier?
- 7 of 18. Tiers follow fixed score bands: S from 90, A from 80, B from 70, C from 60, D from 50, F below. The list's leader is S if it scores 80 or more. On a list of 20 or more ranked apps, a tier from S to D takes in new apps only up to a quarter of the top 40: an app pushed out of a full tier falls to the next tier with room, and F takes the rest. An app already in a tier keeps its place while the tier is at most 2 apps over a quarter; past that, only the apps over that margin go down, lowest score first. Equal scores share a tier, and no app has a better tier than an app ranked above it. An app keeps its tier until its score passes the band edge by more than 1 point, or a full tier or the order above moves it. Only the top 40 of a list get a tier.