About a quarter of US teens (26%) said they had used ChatGPT for schoolwork in a fall 2024 Pew Research Center survey, double the share from 2023. Yet only 18% said it was acceptable to use it to write essays. That gap is the real question behind "best essay writing app." Students don't just want text on a page. They want help that makes their own essay better without crossing a line. Here are six apps that do that, each chosen for a different job.
How we chose
An essay goes through several stages: getting started, drafting, researching, citing and editing. No single app is best at all of them, so we picked the strongest option for each stage rather than ranking six near-identical AI writers.
Our rules for this list:
- Only facts from official listings. Features and prices come from each app's App Store page as of October 2026. Prices change, so check the listing before you pay.
- No invented testing. We describe what each app says it does and where its own listing or reviews show limits. We did not run a hands-on trial.
- Works on iPhone. Every pick has an iPhone app, because that's where many students write between classes.
- Fair to academic rules. We left out tools that are mainly sold for disguising AI text, since that conflicts with most schools' integrity policies.
One more thing before the list: always follow your school's or teacher's rules on AI. Some courses ban it, some allow it for brainstorming only, and some ask you to disclose it.
1. Google Docs
Best for: free drafting and getting feedback.
Google Docs is the default writing space for many classrooms, and for good reason. Its App Store listing highlights real-time collaboration, comments and offline editing, and it opens Microsoft Word files directly. It is free, with optional paid storage and AI features for Google Workspace subscribers.
Strengths: free, autosaves, easy to share with a teacher or study group, and it works on almost any device.
Weaknesses: the AI writing suggestions mentioned in its listing need a paid Workspace plan, and formatting a long paper with complex headings and page numbers is smoother on a computer than a phone.
2. Microsoft Word
Best for: students whose school expects .docx files or strict formatting.
Word remains the format many universities ask for. The iPhone app lists templates, formatting and layout tools, comments, real-time co-editing, change tracking and version history. It can also convert a PDF into an editable Word document. Its Copilot AI features need a qualifying Microsoft 365 subscription, and the listing shows plans ranging from $6.99 to $129.99.
Strengths: the standard file format, strong formatting, and track changes for peer review.
Weaknesses: the best features sit behind a subscription, and one recent App Store review complains about confusing billing. Check whether your school provides Microsoft 365 for free before buying it yourself; many do.
3. Grammarly
Best for: editing grammar, clarity and tone across every app.
Grammarly's iPhone app is mainly an AI keyboard, so its suggestions follow you into Docs, Word, email and anything else you type in. The listing mentions spelling, grammar and conciseness checks in 20+ languages, generative rewrites for length and tone, and a document editor with plagiarism and AI detection. It is free to download, with Premium plans listed from $17.99 a month for mobile-only access.
Strengths: catches errors where you already write, rated 4.7 from over 200,000 ratings on the App Store.
Weaknesses: the most useful style tools are Premium, and some recent reviews criticize the subscription. Its rewrite features are powerful, so check your course rules before accepting long AI rewrites in graded work.
If you want to build the skill yourself instead of relying on a checker, our guide on how to write concise sentences walks through the same edits a tool would suggest.
4. Zotero
Best for: research and citations, for free.
Citation errors cost easy marks. Zotero is a free research manager from a nonprofit, and its iPhone app saves articles and webpages from Safari's Share button, reads and annotates PDFs, and builds citations and bibliographies in over 10,000 styles, including APA, MLA and Chicago. It syncs with the free desktop app, which is where you'll insert citations into a Word or Google Docs essay.
Strengths: completely free, trusted by academics, and it keeps every source in one library so you never lose a reference.
Weaknesses: it is a research tool, not a writing tool, and the full citation workflow is easiest on a laptop. It also has far fewer ratings than the big editors, so there's less user feedback to go on.
5. Scrivener
Best for: long projects like dissertations, extended essays and theses.
Scrivener lets you write in small sections and reorder them, which suits essays that are too long to manage as one scroll. Its iOS listing mentions outlining with synopses and labels, a binder sidebar, word count targets, imported research files such as PDFs, and export to Word, PDF and other formats. It is a one-time purchase of $23.99 rather than a subscription.
Strengths: no subscription, and structure tools that genuinely help with 5,000+ word projects.
Weaknesses: overkill for a two-page essay, a learning curve, and sync between devices needs Dropbox because iCloud isn't supported. Some reviews mention sync problems.
6. Essay Writer
Best for: getting past a blank page and turning rough ideas into structured paragraphs.
Essay Writer is our own app, so weigh this pick with that in mind. You type a topic or rough idea, and it generates paragraphs you can then rework. Its App Store description also lists contextual grammar and spell checks, vocabulary improvements, synonym and sentence suggestions, and one-tap sharing to other apps. It runs on iPhone only and uses a subscription.
Strengths: fast and simple, useful for seeing how an idea could be structured before you write your own version.
Weaknesses: no research or citation tools, no collaboration, and iPhone only. AI-generated paragraphs need fact-checking and your own voice before they belong in graded work, and some courses don't allow AI drafting at all.
Which one is right for you?
Match the app to the stage where you get stuck:
| If you struggle with... | Start with | Cost (as of October 2026) |
|---|---|---|
| Starting and structuring | An AI paragraph tool (pick 6), then rewrite in your own words | Subscription |
| Drafting and sharing | Google Docs | Free |
| Strict formatting or .docx files | Microsoft Word | Free app, Microsoft 365 for full features |
| Grammar and clarity | Grammarly | Free, Premium optional |
| Sources and citations | Zotero | Free |
| Very long projects | Scrivener | $23.99 one-time |
A sensible free setup for most students is Google Docs + Zotero, adding Grammarly's free tier for proofreading. Students writing a thesis or long extended essay should look at Scrivener. If your problem is mainly a blank page, an idea generator can help, as long as what you hand in is your own thinking.
A simple workflow that respects most academic policies:
- Brainstorm and outline by hand or in notes.
- Gather sources in Zotero as you read.
- Draft in Docs or Word, in your own words.
- Edit with a grammar checker, accepting fixes you understand.
- Insert citations and build the bibliography.
- Read the whole essay aloud once before you submit.
How Essay Writer can help
The app is built for the first stage: the moment you have a topic and nothing written. Enter your topic or rough idea and it returns structured paragraphs you can use to see how an argument might flow. From there, the grammar check, spell check and synonym suggestions help you polish the version you write yourself, and one-tap sharing moves your text into Docs, Word or Notes. It works on iPhone only. Use it as a starting point and practice tool, not a finished essay, and always check your school's rules on AI before using generated text in graded work. More writing guides live on our essay blog.
Frequently asked questions
What is the best free essay writing app for students?
Google Docs is the strongest free choice for drafting because it works offline, saves automatically and lets teachers or classmates comment in real time. Pair it with Zotero, which is also free and builds citations and bibliographies in over 10,000 styles, including APA, MLA and Chicago.
Is it allowed to use AI apps for school essays?
It depends on your school and your teacher. Many institutions allow AI for brainstorming or grammar checks but treat submitting AI-generated text as your own as an academic integrity violation. Read your syllabus or honor code, ask when unsure, and disclose AI use when your school asks you to.
Do I need a paid app to write a good essay?
No. A free word processor plus a free citation manager covers what most assignments need. Paid upgrades mainly add convenience: deeper style suggestions, AI rewriting, or tools for organizing very long documents. Try free tiers first and pay only when a specific feature saves you real time.
Which essay writing app is best on iPhone?
For typing on a phone, Google Docs and Microsoft Word are the most familiar editors, and Grammarly's keyboard checks text in any app. Scrivener suits long projects on iPhone and iPad. Essay Writer is an iPhone-only tool for turning a rough idea into structured paragraphs you can then edit.
Can an app check my essay for plagiarism?
Some can. Grammarly's App Store listing mentions plagiarism and AI detection in its document editor. Treat any checker as a guide, not a verdict, and remember that the reliable way to avoid plagiarism is to cite every source you use, which a citation manager like Zotero makes much easier.
Conclusion
The best essay writing apps for students don't write the essay for you. They remove friction at each stage. Google Docs or Word gives you a reliable place to draft, Grammarly catches errors, Zotero handles citations for free, and Scrivener tames long projects. An AI paragraph tool can help when the blank page is the problem, but your argument, sources and voice still have to be yours. Pick the two or three apps that fix the stage where you get stuck, and keep the rest of your setup simple.