AI writing tools to detect, humanize, rewrite and check grammar
AI-powered email writing tool that generates emails, subject lines and messages in seconds
Stage
Startup
Not given
Founded
2026
Not given
Based in
GB
Not given
Pricing model
Freemium
Freemium
Pricing
Free: unlimited AI Detector, 3 daily uses on writing tools, 5 of 9 humanizer modes, 5 of 8 rewriter tones. Starter $9.99/mo (or $7.99/mo annually): 30K words/month, every humanizer and rewriter mode, 500 words per process. Pro $19.99/mo (or $15.99/mo annually): 100K words/month, no per-request word
Free plan with daily limits; Premium plan available with additional features like expand function
Key features
Unlimited free AI detector with no daily limit or signup required
AI Humanizer with 9 writing modes including Standard, Academic, Blog, Formal, and Simple
Statistical detection engine that processes text on own servers with no third-party sharing
AI Rewriter with 8 different tones
Grammar Checker tool included in all plans
Chrome Extension for in-browser humanizing and detection
Brand Voice feature for maintaining consistent tone across 1-3 voices depending on plan
Re-humanize function to generate genuinely different drafts at higher variation
Multi-language support for 17 languages
12 different tonal options for customization
Three length choices: short, medium, long
User-friendly interface with quick navigation
AI-powered suggestions for content improvement
Real-time editing and customization
Chrome browser extension integration
Mobile device compatibility
No login required for basic usage
Generate emails for various purposes and use cases
What makes it different
Unlimited free AI detector with no daily limits, while competitors limit guests to 3 scans per day
Published accuracy rates with measured false-positive and false-negative rates instead of unverifiable claims
Integrated detect-then-fix workflow keeping flagged drafts in one tool instead of switching between products
Privacy-first approach with AI Detector processing text on own servers with no third-party access
Browser-first start with no extension setup or account creation required before first use
Completely free tool with no financial investment required
Customization with tone, length, and language options
Does not use user content to train the service
Generates human-like, on-brand emails in seconds
Security and privacy prioritized in all operations
Coda One