hrefStack vs Paperpal
hrefStack
hrefstack.comPaperpal
paperpal.comSide by side
| Figure | hrefStack | Paperpal |
|---|---|---|
| Price from | $37.50/mo | $11.58/mo |
| Free plan | Yes | Yes |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | — | Yes |
| macOS | — | Yes |
| Plans published | 5 | 15 |
| Spec score · AI Writing Tools | 8.9 (#28) | 9.4 (#5) |
| Free plan | Yes | Yes |
| Integrations | The site lists WordPress, Shopify, Wix, Ghost, Squarespace, Sanity, Drupal, Google Search Console, ChatGPT, Claude, Perplexity, Gemini, and Grok integrations or connections. | Official pages list a web app, Microsoft Word add-in, Google Docs support, Chrome extension and Overleaf support. |
| Security | The privacy policy states that data is encrypted in transit and at rest, access is limited by need to know, password hashing and optional two-factor authentication are used, and security audits and intrusion detection are performed. | Paperpal states that data is encrypted in transit with 256-bit encryption and at rest with KMS keys, and that it uses SSAE 18/SOC1-certified data centers. |
| Support | hrefStack provides email support at [email protected], with priority email support on Starter and priority support on Pro. | Paperpal provides a Help Center and lists [email protected] as its contact email. |
Plans
hrefStack
- FreeFree
- Starter$450 a year
- Pro$699 a year
- Starter$45 a month
- Pro$69 a month
Paperpal
- Prime$144 a year
- Prime$25 a month
- Pro$348 a year
- Pro$59 a month
- FreeFree
- FreeFree
- Prime$12 a month
- Paperpal Prime$25 a month
- Prime Monthly$25 a month
- Pro$29 a month
In their own words
Paperpal
Paperpal is an AI research and academic writing workspace for students and researchers, combining writing help, citation tools, and academic checks. Users can upload references and PDFs, ask questions, and receive cited findings from more than 300 million verified research articles. Writing tools cover academic suggestions, paraphrasing, tone changes, word reduction, grammar, proofreading, and citation formatting. Its checker suite looks for plagiarism and AI-writing patterns, checks references, and assesses journal submission readiness. Paperpal runs on the web and as a browser extension; it also offers a Microsoft Word add-in and browser-extension support for Google Docs and Overleaf. The free plan includes 200 language suggestions, five generative AI uses per day, 7,000 plagiarism-check words per month, and five daily AI-detection scans of up to 1,200 words each. Prime costs $144 a year billed annually, or $25 a month billed monthly. Pro costs $348 a year billed annually, or $59 a month billed monthly. Paperpal says it does not train its AI models on user documents, uploads, or personal information, and allows document deletion.