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Best Proof Writing Tool Apps

250+ iOS apps curated and reviewed

4.7 avg rating
20 free apps
Updated September 2026

The best proof writing tool apps on iPhone average 4.7โ˜… across 250+ titles โ€” we've ranked them by what real users actually keep on their phones. Updated September 2026.

Compare top Proof Writing Tool Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Proofreader AI Grammar CheckerProofreader AI Grammar CheckerFree4.7โ˜… (3.3K)NoYesOct 2026
2Wordtune: AI Writing KeyboardWordtune: AI Writing KeyboardFree4.4โ˜… (976)NoYesOct 2026
3Danger Notes - Write or DieDanger Notes - Write or DieFree4.8โ˜… (2.3K)YesYesOct 2026
4Quietleaf: Writing SpaceQuietleaf: Writing SpaceFreeโ€”NoNoAug 2026
5Cursify: Writing ToolsCursify: Writing ToolsFree4.7โ˜… (3)NoNoMay 2026
6AI Email Writer: Lazy MailAI Email Writer: Lazy MailFree4.6โ˜… (203)NoYesSep 2026
7Silt: WritingSilt: WritingFreeโ€”NoNoJul 2026
8BrainyAI โ€“AI Writing AssistantBrainyAI โ€“AI Writing AssistantFreeโ€”NoYesAug 2026

Top Picks for Proof Writing Tool

Proofreader AI Grammar Checker#1

Proofreader AI Grammar Checker by BlueSoar SL

Writing Keyboard, Spell Check
Editor's Choice
๐Ÿ“Š Productivity
4.7๐Ÿ˜(3.3K ratings)
FreeIn-App Purchases
Proofreader AI Grammar Checker screenshot 1
Proofreader AI Grammar Checker screenshot 2
Proofreader AI Grammar Checker screenshot 3
Proofreader AI Grammar Checker screenshot 4
Proofreader AI Grammar Checker screenshot 5
Proofreader AI Grammar Checker screenshot 6

Enhance your writing with an AI-powered keyboard and assistant. Correct grammar, spelling, and punctuation, and improve clarity and style. Generate text, rewrite sentences, and expand your vocabulary anywhere you type.

What We Love

  • ๐Ÿš€ Helpful grammar and writing suggestions
  • ๐Ÿ‘ Easy to use
  • ๐Ÿ’ก Affordable alternative to Grammarly
  • ๐Ÿ‘ Explains why changes are suggested
  • ๐Ÿ’ก Useful for non-native English speakers

Room to Improve

  • ๐Ÿ› Inconsistent performance, sometimes misses errors
  • ๐Ÿ” Limited functionality in free version
  • ๐Ÿ” Subscription required for full features
  • ๐Ÿ› Issues with pasting text into other apps
  • ๐Ÿ› Struggles with specialized/foreign names
Wordtune: AI Writing Keyboard#2

Wordtune: AI Writing Keyboard by AI21 Labs, Inc.

AI Writing App & Paraphrasing
Strong Contender
๐Ÿ“Š Productivity
4.4๐Ÿ˜(976 ratings)
FreeIn-App Purchases
Wordtune: AI Writing Keyboard screenshot 1
Wordtune: AI Writing Keyboard screenshot 2
Wordtune: AI Writing Keyboard screenshot 3
Wordtune: AI Writing Keyboard screenshot 4
Wordtune: AI Writing Keyboard screenshot 5
Wordtune: AI Writing Keyboard screenshot 6

This AI-powered writing assistant helps you express yourself more clearly and authentically. It offers suggestions to rephrase text, generate new content, and adjust the tone and length of your writing. It works across multiple platforms, making it a versatile tool for various communication needs.

What We Love

  • ๐Ÿ’ก Helpful for improving writing
  • ๐Ÿ‘ User-friendly interface
  • ๐Ÿš€ Efficient at rephrasing and suggesting edits
  • ๐Ÿ’ก Variety of features (e.g., tone adjustments, word suggestions)

Room to Improve

  • ๐Ÿ”’ Requires full keyboard access
  • ๐Ÿ’ฐ Expensive subscription
  • ๐Ÿ› Glitchy, unreliable, or inconsistent performance
  • ๐Ÿ”’ Privacy concerns around data access
  • ๐Ÿ”‹ High battery consumption
Danger Notes - Write or Die#3

Danger Notes - Write or Die by Villegas Ventures LLC

Beat Writer's Block
Worth Considering
๐Ÿ“Š Productivity
4.8๐Ÿ˜Š(2.3K ratings)
FreeAdsIn-App Purchases
Danger Notes - Write or Die screenshot 1
Danger Notes - Write or Die screenshot 2
Danger Notes - Write or Die screenshot 3
Danger Notes - Write or Die screenshot 4
Danger Notes - Write or Die screenshot 5

This app is designed to combat writer's block by requiring continuous typing to save your work. If you stop typing, all unsaved progress is permanently deleted, encouraging a consistent writing flow.

What We Love

  • ๐Ÿš€ Motivates writing
  • ๐Ÿ‘ Helps with writer's block
  • ๐Ÿš€ Boosts creativity
  • ๐Ÿ‘ Simple and easy to use
  • ๐Ÿš€ Encourages writing without overthinking
  • ๐Ÿ‘ Adjustable timer

Room to Improve

  • ๐Ÿ› Accidental deletion of work
  • ๐Ÿ” Inability to pause or resume writing sessions
  • ๐Ÿ’ก Lack of formatting options (bold, italics, etc.)
  • ๐Ÿ› Overlapping text when reaching page limit
  • ๐Ÿ’ก Inability to set word count goal instead of time
  • ๐Ÿ” Ads not removed even after paying

More Proof Writing Tool apps to explore

FAQ about Proof Writing Tool

What are the best proof writing tool apps for iPhone?
Proofreader AI Grammar Checker tops our proof writing tool apps ranking as of September 2026, with a 4.7-star average from 3.3K App Store ratings, and it's free to download.
Yes โ€” 20 of the top proof writing tool apps we rank are free to download, including Proofreader AI Grammar Checker and Wordtune: AI Writing Keyboard.
Proofreader AI Grammar Checker has no ads and offers in-app purchases, according to its App Store listing as of September 2026.
We track 250+ proof writing tool apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.