Lightbulb vs Paperpal
Lightbulb
lightbulbai.appPaperpal
paperpal.comSide by side
| Figure | Lightbulb | Paperpal |
|---|---|---|
| Price from | $2.50/mo | $11.58/mo |
| Free plan | Yes | Yes |
| Free trial | Yes | Yes |
| Open source | — | — |
| Web | — | Yes |
| Windows | — | Yes |
| macOS | Yes | Yes |
| iOS | Yes | — |
| Plans published | 2 | 15 |
| Spec score · AI Writing Tools | 8.3 (#94) | 9.4 (#5) |
| Free plan | Yes | Yes |
| Integrations | The site names WhatsApp, Slack, Apple Mail, Gmail, iMessage, Instagram, LinkedIn, X, Threads, Line, and Apple Notes as supported apps with text fields. | Official pages list a web app, Microsoft Word add-in, Google Docs support, Chrome extension and Overleaf support. |
| Support | The site lists [email protected] for support and says it usually replies within 1 business day. | Paperpal provides a Help Center and lists [email protected] as its contact email. |
| What it does | Lightbulb is a native iOS keyboard for generating, polishing, and rewriting text inside other apps. | Paperpal is an AI academic writing and research assistant covering drafting, editing, research, citations, document checking and submission preparation. |
Plans
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
Lightbulb
Lightbulb has no write-up on Specifiction yet; its figures are above.
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.