Overview

Paraphrasing.io is an AI writing service for reworking text and checking or refining drafts. It is best suited to people who want paraphrasing alongside summarizing, plagiarism checking and AI-focused tools. Its range is a strength, but credit consumption varies widely by tool.

Key features

Seven paraphrasing modes—Simple, Reworder, Creative, Shorten, Formal, Professional and Academic—cover both concise rewrites and more formal or academic phrasing. Tone and clarity controls add flexibility, while document upload and a 3,000-word limit suit substantial passages. Rewrites still need a human check for meaning and suitability.

The broader toolkit includes an AI Humanizer, Sentence Shortener, Plagiarism Checker, AI Content Detector and Summarizer, as well as an article rewriter. Having these together can suit users handling several stages of a writing workflow; occasional paraphrasers may find the extra tools unnecessary. More than 20 languages are supported on the platform.

Credit rates make the choice of tool consequential: paraphrasing, article rewriting and summarizing use 1 credit per word, plagiarism checking 4, AI detection 3, and AI humanizing 20. The free registered plan includes the named tools, but its 8,000-credit balance can run down quickly with detection or humanizing.

Developers can use an API supporting 10+ languages. It requires bearer-token authentication over HTTPS and accepts paragraph and lang parameters at POST https://www.paraphrasing.io/api/conversion/rephraseText.

Uploaded content is removed after processing and is not shared with third parties, according to the privacy policy. It also describes SSL/TLS protection in transit and physical, technical and logical safeguards for stored data. Users can request deletion of personal data by email. Support includes live chat and email for billing, technical issues, bugs, cancellation and refunds; the payment provider is described as PCI-compliant and protective of card details.

Pricing

Paraphrasing.io is freemium. The Free Register Plan costs 0.00 USD per free and includes 8,000 credits with paraphrasing, article rewriting, summarizing, plagiarism checking, AI detection and humanizing, with no validity period. It is a useful way to try the toolset, but the small balance is restrictive for repeated use, especially at higher per-word rates.

The Lifetime Plan costs 1.82 USD per once, billed $65 Billed one time, and provides 2,000,000 credits for the same six tool categories. It avoids a recurring term and offers a much larger allowance, but suits users comfortable paying upfront rather than those who want a monthly commitment.

Basic Monthly is 5.00 USD per month, billed $5 /mo, with 200,000 credits and a 30-day term. Pro Monthly is 8.00 USD per month, billed $8 /mo, with 300,000 credits and the same term. Both include the listed tool categories and use the same per-word rates; Pro buys 100,000 additional credits, not cheaper processing.

Basic Yearly costs 54.00 USD per year, billed $48 Billed annually, with 1,000,000 credits and 365 days. Pro Yearly costs 84.83 USD per year, billed $58 Billed annually, with 1,500,000 credits and 365 days. Both include paraphrasing, article rewriting, plagiarism checking, AI detection, humanizing and summarizing. The yearly plans provide larger credit pools, but require an annual commitment; choose Pro for its extra 500,000 credits, not a different tool set.

Platforms

The service is available on the web and iOS, and offers an API. The iOS app requires iOS 15.6 or later. The API provides a separate route for developers integrating paraphrasing into their software.

Who it's for

The maker names students, educators, researchers, content creators, professionals and businesses among its users. Its academic and formal modes may help people reshaping drafts, while the combined writing and checking tools may suit teams or individuals with varied text tasks. The service is less suited to someone who needs only occasional short rewrites and wants to avoid managing a shared credit allowance across tools.

Pros and cons

Pros: Seven modes, tone and clarity controls, document upload and support for more than 20 languages give writers several ways to adapt text.
Pros: A free plan and no-expiry lifetime option offer distinct ways to start without a monthly subscription.
Pros: API access, content-removal policy and multiple support channels address developer use, privacy and account issues.
Cons: AI humanizing costs 20 credits per word, and plagiarism checking costs 4, so the free plan's 8,000 credits may not stretch far for those tasks.
Cons: Monthly plans last 30 days and yearly plans 365 days; users must match their expected usage to the term and credit pool.
Cons: The API supports 10+ languages, fewer than the platform's stated support for more than 20.

Alternatives

Paraphrasing Tools is a directory of options to compare if Paraphrasing.io's credit system or bundled tools are not the right fit.

Trinka is another freemium option, with web, API, extension, macOS, self-hosted and Windows platforms; consider it if those platform choices matter.
Paperpal offers a free plan and trial, with extension and web access; consider it if you want to compare a trial-based option.
Wordtune has a free plan and trial, with extension, iOS and web access. Its Basic plan allows 10 rewrites and AI suggestions per day and three AI summarizations per month, alongside unlimited spelling corrections and grammar checks; choose it if those daily and monthly limits fit your needs.
Clever AI Humanizer is free on the web, with no fixed monthly word allowance and requests up to 3,000 words, subject to service availability; consider it for a humanizing-focused alternative.
Scribbr Paragraph Rewriter is free on the web, with unlimited use, no login and a 125-word-per-paragraph limit; it fits brief paragraph rewrites.
QuillBot has a free plan limited to 125 words in its Paraphraser, 1,200 words in its Summarizer and two paraphrasing modes; consider it if those narrower free limits meet your needs.
Paraphraser.io is a freemium alternative available on Android, iOS, web and API; consider it if those platforms are a priority.
Rephraser.co is a freemium option with a free trial and Android, iOS, web and API access; consider it if those platform choices or a trial suit your decision.

Verdict

Choose Paraphrasing.io if you want several rewriting and text-checking tools in one service, particularly with a larger credit pool or API access. Its main trade-off is credit efficiency: humanizing and checking consume credits much faster than paraphrasing, so users with narrow or sporadic needs should compare simpler free alternatives before committing.

	Paraphrasing.io	SpinBot
Free plan	Yes	No
Free trial	No	No
Paid from	$4.50/mo	—
Open source	No	No
Platforms	api, iOS, Web	Web
Free plan	Yes	Yes
Paid from	5 /mo	—
Tone controls	Yes	—
Clarity controls	Yes	—
Word limit	3,000 words	—
Document upload	Yes	—
API access	Yes	—

Paraphrasing.io vs SpinBot

Paraphrasing.io

SpinBot