QuillBot vs StealthWriter

QuillBot

QuillBot remains the fastest way to reword a paragraph you have already written, and the free tier is enough for occasional use; Premium at roughly $8 to $20 a month depending on term buys the extra modes, longer inputs and the plagiarism checker that students actually want. Against a general chatbot it wins on speed and a purpose-built interface, not on writing quality, and against Grammarly it is cheaper but narrower.

Pros

• +Free tier includes grammar checking, two paraphrase modes, translation and AI detection
• +Extensions and apps for Chrome, Windows, macOS, Safari, iOS and Android keep it inside the writing surface
• +Paraphrase modes and a synonym slider give more control than a one-shot rewrite prompt
• +Backed by Learneo, a large education group, rather than an anonymous operator

Cons

• −Month-to-month Premium is about 2.4 times the annual rate, so the headline low price assumes a year up front
• −The site blocks automated access, so none of the figures here come from its own pricing page
• −The App Store listing itself disagrees on how many Premium paraphrase modes exist (8 versus 10+)
• −The heavy student use and the AI detector attract academic-integrity scrutiny that can rebound on users

StealthWriter

Pairing the rewriter with its own detector in one screen is the sensible design choice here — you can see the before and after score instead of pasting into a third tool to find out. The tiering is honest about what you are buying: daily rewrite count and input length, nothing hidden. Everything else about this category applies, though: detector scores are not a guarantee, the rewrite flattens voice and sometimes meaning, and using it on assessed work is a disciplinary matter regardless of what the score says.

Pros

• +Built-in detector scores text before and after the rewrite in the same interface
• +Free tier is a standing 10 rewrites a day, not a one-off trial
• +Every paid tier raises input length to 5,000 words, so tiers differ only by volume
• +Named US operator with published phone and email support hours
• +Changelog actively maintained, indicating ongoing development

Cons

• −Detector evasion degrades as detectors update — today's score is not a durable result
• −Rewriting flattens voice and can quietly alter facts or technical terms
• −$400/month top tier is steep for a single-function tool, and there is no API to justify it
• −Free tier's 1,000-word input cap excludes most real articles

Is QuillBot cheaper than StealthWriter?

On published entry prices, QuillBot starts lower — $19.99/mo against $20/mo for StealthWriter. Entry price is the lowest paid plan as we last verified it; what each plan includes differs.

Does QuillBot or StealthWriter have a free tier?

Both: QuillBot has a free tier, and StealthWriter has a free tier.