Everything you need to know about UltraWordCounter and its tools.
UltraWordCounter is a browser-based writing analysis suite with a free core and optional Pro upgrade. The core word counter is free forever — it counts words, characters, sentences, and paragraphs in real time while analyzing reading grade, passive voice, keyword density, reading time, grammar, spelling, and more.
Seven additional utility tools are also completely free forever: Words Per Page Calculator, Alphabetize List, Edit Counter, Random Word Generator, Compare Text, Auto-Capitalize, and Sentence Counter. Three professional modules (Amazon FBA Optimizer, SEO Keyword Density Analyzer, and Social Media Character Tracker) are free up to 800 words, with unlimited access on a Pro plan.
The core word counter and all utility tools are 100% free with unlimited usage — no account, no login, no time limit, no catch. This includes the core word counter, grammar and spell checker, readability scorer, and seven additional utility tools: Words Per Page Calculator, Alphabetize List, Edit Counter, Random Word Generator, Compare Text, Auto-Capitalize, and Sentence Counter.
The three professional modules (Amazon FBA Optimizer, SEO Analyzer, Social Media Tracker) are free up to 800 words. A Pro plan unlocks unlimited words across all three professional modules.
No. UltraWordCounter requires no account, no email, and no login. Open the site and start writing immediately.
Yes. The entire site is fully responsive and works on iOS Safari, Android Chrome, and all modern mobile browsers.
Yes — the 800-word limit is based purely on how many words are currently in the text area. The moment you clear your text or reduce it below 800 words, the tools resume automatically. There is no daily limit, no usage tracking, and no memory of previous usage.
Your text never leaves your browser. All analysis — word counting, grammar checking, SEO analysis, FBA optimization — runs entirely on your device. Nothing is ever transmitted to any server.
As you type, your text is saved to your browser's localStorage — a database built into every modern browser. When you close the tab and reopen it, your text is exactly as you left it. This data stays on your device only and is never accessible to us.
The FBA module tracks Amazon's character limits in real time: Product Title (200 chars), Bullet Points (500 chars each), Product Description (2,000 chars). Progress bars fill and change color as you approach limits. It also checks for commonly banned Amazon words and flags them immediately.
Paste any article, blog post, or page content into the SEO module. It calculates the exact word frequency percentage for every significant word. Results show top 15 keywords ranked by frequency with percentage bars, total and unique word count, Flesch-Kincaid reading grade, and keyword density range.
X/Twitter (280 chars), LinkedIn posts (3,000 chars), Instagram captions (2,200 chars), and TikTok Bio (80 chars). Each shows a real-time color-coded progress bar and over-limit warning.
Reading grade uses the Flesch-Kincaid Grade Level formula: 0.39 × (words ÷ sentences) + 11.8 × (syllables ÷ words) − 15.59. The result is a US school grade level. Most popular web writing targets grade 6–8.
The Pro plan removes all word limits on the three advanced modules (Amazon FBA Optimizer, SEO Keyword Analyzer, Social Media Tracker). The core word counter, grammar checker, readability scorer, and all seven utility tools remain completely free forever for everyone — Pro or not.
Yes — both plans include a 7-day free trial. A credit card is required upfront. You can cancel any time before the trial ends and will not be charged.
You can cancel any time from your account settings or by emailing [email protected]. If you cancel during your 7-day free trial, you will not be charged.
We offer a 7-day free trial on all Pro plans — no charge until the trial ends. Because of this, we do not offer refunds after the trial period has ended. If you believe you were charged in error, contact us at [email protected] within 7 days of the charge.