Grammarly-AI Writing Assistant

Grammarly, Inc.
FREE iOS Android
4 ★
Rating
10M+
Downloads
Free
Price
2.58.45960
Version
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Reviewed on March 26, 2026  · Updated April 24, 2026
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Screenshots

Grammarly-AI Writing Assistant app screenshot 1 Grammarly-AI Writing Assistant app screenshot 2 Grammarly-AI Writing Assistant app screenshot 3 Grammarly-AI Writing Assistant app screenshot 4 Grammarly-AI Writing Assistant app screenshot 5 Grammarly-AI Writing Assistant app screenshot 6 Grammarly-AI Writing Assistant app screenshot 7 Grammarly-AI Writing Assistant app screenshot 8

Why I Downloaded Grammarly-AI Writing Assistant

My Monday morning ritual was getting embarrassing. I’d fire off a quick project update to my team from my iPhone 14, only to get a Slack message an hour later pointing out a glaring typo or a sentence that sounded unintentionally snippy. It wasn’t a one-off; it was a pattern. I downloaded Grammarly-AI specifically to be that final, ruthless filter before my thumb hit “send.” I needed something that would catch the dumb stuff I miss when I’m typing fast and maybe even polish the tone so I don’t come across like a jerk before my first coffee. Free was the right price to start, because I’ve been burned by overhyped writing apps before.

Standout Features

The spelling and grammar checker is the undisputed workhorse. It nailed the classic “your” vs. “you’re” mistakes and caught a missing comma that would have changed the meaning of a client email. The tone detector is useful, if a bit blunt. It flagged a sentence in a follow-up email as “dissatisfied” and suggested a more neutral alternative, which was spot-on. Where things get interesting—and sometimes frustrating—is with the AI-powered suggestions. It offered to rewrite a perfectly clear, concise sentence into a verbose, corporate-sounding mess. One suggestion to replace “fix the bug” with “remediate the technical anomaly” was laughably bad. It’s powerful when it works, but you absolutely cannot accept its changes blindly.

Daily Use Experience

I used it non-stop for three days across Gmail, Notes, and Slack. The keyboard integration is smooth; it just lives there, underlining things in different colors. The green for tone and blue for “clarity” (a premium feature it teases) can feel like your writing is being graded, which is oddly motivating. On Wednesday afternoon, while drafting a technical spec in a coffee shop, it kept insisting a very specific industry term was incorrect. I had to dismiss the same suggestion five times. The app is clean and fast, but this highlighted a key weakness: it doesn’t always understand context. For quick social posts and cleaning up email drafts, it’s excellent. For anything with niche vocabulary or a specific voice, you’re fighting the AI as much as using it.

Cost Breakdown

The free version is shockingly capable for basic use. It handles all the spelling, grammar, punctuation, and tone checking I needed for 95% of my daily writing. The premium upsell is constant, though. It dangles those blue “clarity” and “engagement” underlines on your text, then tells you you need to pay to see the fix. I get it, they need to make money. For me, the free tier delivered exactly what I wanted: a safety net for my worst mistakes. I wouldn’t pay for Premium unless I was suddenly writing academic papers or marketing copy full-time. For catching my pre-coffee email blunders, free is plenty.

Support Experience

I ran into a weird bug where the app’s keyboard would occasionally freeze for a second after a space, only on my iPhone 14. It was minor but annoying for a power user. I reported it through the in-app help on my first day. I didn’t hear back for two full days, which felt slow. When they did reply, the agent was actually helpful. They asked for my iOS version, confirmed it was a known issue they were working on, and gave a clear workaround (switching to a different keyboard and back). It fixed the glitch. Good resolution, but the delay means you’re on your own for a bit if you have a critical problem.

Privacy Verdict

This is the big, necessary caveat. You’re feeding all your writing—emails, messages, potentially sensitive stuff—into their system for analysis. Their privacy policy says they use this data to improve their services. I’m not writing state secrets, but it gave me pause before pasting anything truly confidential into the standalone editor. For general day-to-day stuff, I made my peace with it, but it’s a trade-off. You’re getting a powerful editing tool in exchange for letting an AI scan your words. I wouldn’t use it for drafting legal documents or private journal entries, full stop.

Frequently asked questions
How does Grammarly's tone detector work?

Grammarly's tone detector analyzes your writing for emotional cues and labels it with terms like 'dissatisfied' or 'neutral.' It then suggests rewording to match the intended tone, which is helpful for avoiding accidental bluntness in emails or messages.

Can Grammarly rewrite entire sentences for me?

Yes, the AI-powered suggestions can rewrite sentences, but use them carefully. While it sometimes improves clarity, it may also produce overly formal or corporate-sounding alternatives, like changing 'fix the bug' to 'remediate the technical anomaly.'

Why does Grammarly keep flagging a word I know is correct?

Grammarly's dictionary may not recognize niche industry terms, causing repeated false flags. You can dismiss the suggestion each time, but for persistent issues, adding the word to your personal dictionary will stop the alerts.

How do I fix Grammarly showing premium features I don't want?

The app teases premium features like 'clarity' suggestions with a blue underline, which can feel distracting. To reduce this, you can adjust settings to show only free features or upgrade to the premium plan for full access.

How does Grammarly compare to the built-in spell check on my phone?

Grammarly goes beyond basic spell check by catching grammar errors like 'your' vs. 'you're' and analyzing tone, which phone spell checkers rarely do. However, phone checkers are faster and less intrusive for simple typos, while Grammarly offers deeper but sometimes overzealous suggestions.

✓  Pros
✓ Catches subtle typos and grammar mistakes my brain auto-corrects.
✓ Tone detector is useful for avoiding unintentionally harsh emails.
✓ Free version is robust enough for most daily writing tasks.
✓ Clean, non-intrusive interface that works across apps.
✗  Cons
✗ AI rewrite suggestions can be hilariously bad and out of touch.
✗ Struggles with niche or technical vocabulary, causing false flags.
✗ Constant nudges to upgrade to Premium within the free app.
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App information
DeveloperGrammarly, Inc.
Version2.58.45960
Downloads10M+
PriceFree
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