The Compose AI Insider’s Guide
Everything we know about Compose AI in one document: what it costs, its grades, getting a refund, getting help and what else to look at. Read it here, or keep a copy.
Compose AI
The Insider’s Guide
Chrome extension that autocompletes your writing with AI
Every plan, grade, refund rule and rival among email apps, read from Compose AI’s own pages.
Made by Compose AI, INC. · checked Nov 13, 2026 · toolgpa.com
Contents
- 01WelcomeWhat it is, who it suits, its grades and the ten things to know first
- 02What it costsEvery plan, the free plan, ways to pay less and how prices have moved
- 03What it doesIts main features, where it runs, what it works with and who makes it
- 04Where it standsIts grades against its category, and whether to keep it or make your own
- 05The alternativesThe tools it is most often weighed against, side by side
- 06Quick answersThe questions people ask about it, each answered in a line or two
- 07About ToolGPAWho made this guide, what else is on the site, and how to cite it
ToolGPA put this guide together from Compose AI’s own pages, its app-store listings and our grades. Every fact in it is on Compose AI’s page too, where it is kept up to date. Checked Nov 13, 2026.
Part 01 · Overview
Welcome
What it is, who it suits, its grades and the ten things to know first
2.4
GPA, above 54 of the 122 other email apps we grade
Compose AI is a Chrome extension that suggests text as you type and can generate drafts for emails, documents and chat messages. It says it learns the user's writing style to personalize suggestions. Its site describes a free version and a premium version, but the pricing page could not be read.
To get you started, here are 7 things to know about Compose AI, taken from its own pages and our grades.
Install the extension and start typing, with nothing to set up.
- 1
Best for autocomplete while you type in Chrome
Compose AI is a Chrome extension that finishes your sentences in any text box.
- 2
There is a free plan
The site says the Chrome plugin is free to use, with a premium version that adds advanced features.
- 3
Autocomplete in any text field
Suggests the rest of a sentence where you type, across the sites and tools the extension is allowed to run on.
- 4
Text generation
Generates text from a prompt, with emails, documents and chat messages named as example uses.
- 5
Writing-style personalization
The vendor says it learns the user's voice and suggests phrases in that style; the FAQ ties some personalization features to the premium version.
- 6
A 2.4 GPA, above 54 of 122
That is against the other email apps we grade, on value, the free plan, features, ease of use and platforms.
- 7
Keep it
The plain part of Compose AI you could make: long-form writing. What surrounds it you could not. The 2 things listed below take a company, not a weekend.
Compose AI at a glance
- Pricing
- Free plan
- Free plan
- Yes
- Free trial
- None stated
- Runs on
- Browser extension
- Made by
- Compose AI, INC.
- Category
- Email Apps
- Our grade
- 2.4 GPA, fair
The report card
Best for autocomplete while you type in Chrome
Compose AI is a Chrome extension that finishes your sentences in any text box. The site says it is free forever, but the premium price couldn't be read, the site footer shows 2024, and it is Chrome only with no inbox of its own.
| Subject | Grade | Comment |
|---|---|---|
| Value for money | C | The extension is free, and a premium version exists, but its price sits behind a pricing page that wouldn't load. We can't say where it lands against the $8 email middle. |
| Free plan and trial | B | The site says the plugin is free to use forever, with a premium version adding personalization features. No card or time limit is mentioned. |
| Features | C | Autocomplete, text generation and style personalization. It is a general writing helper, not an email client, so there is no inbox, folders or sending. |
| Ease of use | B | No store rating on record. Install the extension and start typing, with nothing to set up. |
| Platforms and integrations | C | Chrome only, according to the site. It names LinkedIn, Facebook and Instagram, and no API. |
An A is worth 4 points, a B 3, a C 2, a D 1 and an F nothing. The GPA is the average of the five.
Who Compose AI is for
- Fits if you write in Chrome all day and want sentences finished for you
- Works for people who want a free trial of AI autocomplete before paying anything
Who it is not for
- Skip it if you want an email app, because it has no inbox and works only as a Chrome add-on
- Not for you if you use Safari, Firefox or a phone, as no other browser or app is mentioned
- Watch out: the premium price isn't on the page we could read, so you can't tell what upgrading costs
- Watch out: the site footer shows 2024 and the homepage mentions no recent updates
Good to know
Good for
- Chrome users who type a lot of email and chat text
- People who want drafting help across several web apps
Worth knowing
- The pricing page loads its plans with JavaScript and could not be read, so no premium price is listed.
- It is a Chrome plugin; the site mentions no other browsers or standalone apps.
- The site footer shows a 2024 copyright, and the homepage mentions no recent updates.
- It is a general writing tool, not an email client: it has no inbox of its own.
Part 02 · Pricing
What it costs
Every plan, the free plan, ways to pay less and how prices have moved
Compose AI's current pricing could not be confirmed from its own site.
The extension is free, and a premium version exists, but its price sits behind a pricing page that wouldn't load.
We could not confirm Compose AI’s current prices from its own site, so this guide lists no plans. compose.ai has them.
Part 03 · Features
What it does
Its main features, where it runs, what it works with and who makes it
1
Place it runs: Browser extension
Chrome extension that autocompletes your writing with AI. Here is what it does, as its own site describes it, and what it covers: AI features, text expansion, long-form writing.
Autocomplete, text generation and style personalization.
- Autocomplete in any text field
- Suggests the rest of a sentence where you type, across the sites and tools the extension is allowed to run on.
- Text generation
- Generates text from a prompt, with emails, documents and chat messages named as example uses.
- Writing-style personalization
- The vendor says it learns the user's voice and suggests phrases in that style; the FAQ ties some personalization features to the premium version.
- Use-case pages
- Site pages cover copywriting, blogging, recruiting and social media posts, including LinkedIn, Facebook and Instagram.
Where it runs
- Browser extension
What it works with
Compose AI is made by Compose AI, INC.
Part 04 · Standing
Where it stands
Its grades against its category, and whether to keep it or make your own
54/122
Other email apps it is graded above
Compose AI's GPA of 2.4 is higher than 54 of the 122 other email apps we grade, and level with 19.
It stands best on ease of use (B, above 94 of 122) and worst on features (C, above 1).
Each grade against the category
Every bar is all 123 email apps we grade, cut by the letter each got. Compose AI’s own letter is outlined.
- CValue for moneyAbove 13 of 122
- BFree plan and trialAbove 69 of 122
- CFeaturesAbove 1 of 122
- BEase of useAbove 94 of 122
- CPlatforms and integrationsAbove 10 of 122
Keep it, or make your own?
Whether this is something you could build for yourself with an AI app builder, and what you would give up.
Keep it
The plain part of Compose AI you could make: long-form writing. What surrounds it you could not. The 2 things listed below take a company, not a weekend.
What you could make
- Long-form writing: an app builder makes this well.
What you could not
- Text expansion that works in every app.
- AI features, unless you pay a model provider for each request yourself.
What this rests on. Compose AI’s listing: what it does, where it runs, what it plugs into and what it costs. It is a judgement about the kind of software this is. We have not built a replacement for it, and making your own means looking after it too. How we decide, and every tool’s verdict.
Part 05 · Alternatives
The alternatives
The tools it is most often weighed against, side by side
MailMaestro, Ellie, Fyxer, Jace AI and Inbox Zero
The 5 tools Compose AI is most often weighed against, with where each one differs from it.
- 2.0GPA
MailMaestro
Free plan · from $12/mo
AI email writing and inbox assistant for Outlook and Gmail.
- Compose AI also covers long-form writing.
- MailMaestro also covers templates, email client and inbox filtering.
- 2.0GPA
Ellie
Free trial · from $19/mo
AI that drafts email replies in your voice for Gmail and Outlook.
- Compose AI has a free plan. Ellie does not, though it has a free trial.
- Only Ellie lists a web app.
- Compose AI also covers text expansion and long-form writing.
- 2.0GPA
Fyxer
Free plan · from $37/mo
AI assistant that sorts email, drafts replies and takes meeting notes.
- Only Compose AI lists a browser extension.
- Only Fyxer lists a web app.
- Compose AI also covers text expansion and long-form writing.
- 2.0GPA
Jace AI
Free trial · from $20/mo
AI email agent with a web inbox for Gmail and Outlook.
- Compose AI has a free plan. Jace AI does not, though it has a free trial.
- Only Compose AI lists a browser extension.
- Only Jace AI lists a web app.
- 2.0GPA
Inbox Zero
Free trial · from $18/mo
Open source AI email assistant for Gmail and Outlook.
- Compose AI has a free plan. Inbox Zero does not, though it has a free trial.
- Only Inbox Zero lists a web app.
- Only Inbox Zero lists macOS, Windows, iOS and Android apps.
Part 06 · Questions
Quick answers
The questions people ask about it, each answered in a line or two
9
Questions, each answered in a line or two
The short version of everything above, for when you only need the answer. Each one is told in full in its part of the guide.
Is Compose AI free?
Compose AI has a free plan. The site says the Chrome plugin is free to use, with a premium version that adds advanced features.
Does Compose AI have an Android app?
No Android app was listed when its pages were read on Nov 13, 2026. Compose AI is listed for no platform we could confirm.
Does Compose AI have an iPhone app?
No iPhone app was listed when its pages were read on Nov 13, 2026. Compose AI is listed for no platform we could confirm.
Is Compose AI open source?
Compose AI is not described as open source on its own site, as read on Nov 13, 2026.
What does Compose AI integrate with?
Compose AI's listing names LinkedIn, Facebook and Instagram. A listing names up to eight integrations, so it may connect to more.
Who makes Compose AI?
Compose AI is made by Compose AI, INC.
What are the alternatives to Compose AI?
The closest alternatives to Compose AI in our directory are MailMaestro, Ellie, Fyxer, Jace AI and Inbox Zero.
How does Compose AI compare with other email apps?
Compose AI's GPA of 2.4 is higher than 54 of the 122 other email apps we grade, and level with 19.
Could I make my own version of Compose AI?
The plain part of Compose AI you could make: long-form writing. What surrounds it you could not.
Where this guide comes from
The prices, plans, platforms and features were read from Compose AI’s own pages on Nov 13, 2026, and the grades were given on Nov 13, 2026. Graded from this listing, whose facts were read from Compose AI's own pages on 13 November 2026. Not based on using the product, and shorter than our full reviews.
Every tool we list gets five grades, A to F, each with its reason, and a GPA that averages them. How each is decided is at toolgpa.com/grades. This guide is ToolGPA’s own work; it is not made, paid for or approved by Compose AI, INC. Prices change, so check compose.ai before you buy.
Part 07 · About
About ToolGPA
Who made this guide, what else is on the site, and how to cite it
7,721
Tools graded, in 95 categories
ToolGPA grades software the way a school report grades a pupil: five subjects, a letter for each with the reason written beside it, and a GPA that averages them. Prices, plans and platforms are read from each maker’s own pages and dated, so you always know how fresh a figure is.
Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. Every tool on the site has a guide like this one, free to download and pass on. It all lives at toolgpa.com.
7,721
tools graded
95
categories
739
price changes on record
579
apps priced in 12 countries
What else is on toolgpa.com
- Compose AI, kept up to dateEverything in this guide, with prices and grades as they are todaytoolgpa.com/tools/compose-ai
- How grades are givenThe rules behind every letter and every GPAtoolgpa.com/grades
- Value chartsWhat each tool costs against what it scores, for every categorytoolgpa.com/charts
- CompareAny two tools side by side, plan by plantoolgpa.com/compare
- Price changesEvery price rise and cut on record, each with its sourcetoolgpa.com/price-changes
- Prices by countryWhat apps cost on the App Store in 12 countriestoolgpa.com/prices-by-country
- Pay lessEvery public discount: yearly billing, students, nonprofitstoolgpa.com/save
- Keep or makeWhich tools are worth paying for, and which you could build yourselftoolgpa.com/keep-or-make
Scan for the live page
Prices and grades as they are today
Quoting this guide?
Please name ToolGPA and link to the live page, so readers can check the figures for themselves:
ToolGPA, "Compose AI: The Insider's Guide", checked Nov 13, 2026. https://toolgpa.com/tools/compose-ai
Know someone choosing between email apps?
Send them this guide: toolgpa.com/tools/compose-ai/guide
ToolGPA elsewhere: youtube.com/@toolgpa
See our other guides
The best-graded email apps after Compose AI, each with an Insider's Guide of its own.
- Email Apps Insider's GuideEvery one of the 126 email apps we grade, compared
- Microsoft Outlook Insider's GuideMicrosoft's email and calendar app for desktop, mobile and web3.6 GPA
- AOL Mail Insider's GuideFree webmail with news and weather in a companion mobile app3.2 GPA
- BlueMail Insider's GuideCross-platform email client with a unified inbox and built-in AI3.2 GPA
Choosing software? Every tool graded, every price dated.
Compare tools at toolgpa.com ›Everything in this guide is ToolGPA’s own summary of what Compose AI’s pages, its app-store listings and public reviews said on the dates shown. Grades are our judgement under the rules at toolgpa.com/grades. Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. Compose AI is a trademark of its owner, and this guide is not made, paid for or approved by Compose AI, INC. Prices and plans change: check compose.ai before you buy.