Penelope records 3,010 monthly visits with -62.8% month-over-month growth and Paid, Contact for Pricing pricing. Scribbr records 7,530,803 monthly visits with +14.6% growth and Freemium pricing.
Automated manuscript checks that match your journal's guidelines
Academic proofreading, plagiarism checking and AI-powered writing tools in one place
| Dimension / Metric | | |
|---|---|---|
| Official Domain | penelope.ai | scribbr.com |
| Pricing Model | Paid, Contact for Pricing | Freemium |
| Monthly Visits | 3.01K (3,010) | 7.53M (7,530,803) |
| MoM Traffic Delta | -5.09K (-62.8%) | +957.01K (+14.6%) |
| Primary Market & Share | 🌐 Global (—) | 🇺🇸 United States (32.1%) |
| Direct Visits / mo | 1.22K | 2.47M |
| User Rating | 4.2 | 4.4 |
| Supported Platforms | Website | Website |
Automated manuscript checks that match your journal's guidelines
More than 30 checks spanning ethics approval and informed consent, conflict of interest, data sharing, funding, author contributions, abstract structure, required headings, figures and tables, referencing style, word counts and file cleanliness.
Every result is tied to the relevant marked-up section of the manuscript, so editors and authors can see exactly which sentence or heading produced the pass or fail — the criteria are published in the developer documentation.
Journals decide which checks to run, which are critical, and how the feedback reads, defined on a journal-by-journal basis to match that publication's author guidelines.
Top-level results surface inside the manuscript handling software, while a full interactive report gives the deeper annotated view for editors and authors.
Academic proofreading, plagiarism checking and AI-powered writing tools in one place
A vetted academic editor reviews your paper within hours and returns tracked changes, comments and an explanation letter.
Scans your document against a large web and publication database to surface potentially unoriginal passages before submission.
Flags text likely generated by large language models and offers a rewriting mode aimed at making AI-assisted drafts sound more natural.
Creates and verifies references in APA, MLA, Chicago, AMA, IEEE and ACS styles from a URL, DOI or title search.
Delivers broader real-time grammar and tone correction across web apps, but lacks Scribbr's deep academic focus and citation formatting.
Delivers broader real-time grammar and tone correction across web apps, but lacks Scribbr's deep academic focus and citation formatting.
Provides robust paraphrasing and citation tools, but focuses less on comprehensive academic proofreading and human editing.
Provides robust paraphrasing and citation tools, but focuses less on comprehensive academic proofreading and human editing.
SpecialistAI content detection and a full writing toolkit in one place
SpecialistAI content detection and a full writing toolkit in one place
SpecialistFocuses specifically on AI content detection and writing verification for educators, but lacks academic editing and proofreading workflows.
SpecialistFocuses specifically on AI content detection and writing verification for educators, but lacks academic editing and proofreading workflows.
SpecialistAI grammar, spelling and style checker for 30+ languages
SpecialistAI grammar, spelling and style checker for 30+ languages
SpecialistProvides enterprise-grade AI detection and plagiarism checking, but does not offer human academic proofreading or citation generation.
SpecialistProvides enterprise-grade AI detection and plagiarism checking, but does not offer human academic proofreading or citation generation.
Free / Open-sourceA storytelling toolkit that checks your grammar and coaches your craft
Free / Open-sourceA storytelling toolkit that checks your grammar and coaches your craft
Offers specialized academic writing assistance and AI citation generation, but lacks Scribbr's human proofreading and formal editing services.
Offers specialized academic writing assistance and AI citation generation, but lacks Scribbr's human proofreading and formal editing services.
Free / Open-sourceWrite bolder, clearer prose with instant readability and grammar feedback
Free / Open-sourceWrite bolder, clearer prose with instant readability and grammar feedback
SpecialistExpress yourself with confidence — rewrite, proofread and summarize in one click
SpecialistExpress yourself with confidence — rewrite, proofread and summarize in one click
Assists with essay drafting and scholarly source generation, but lacks Scribbr's human-in-the-loop proofreading and dedicated citation tools.
Assists with essay drafting and scholarly source generation, but lacks Scribbr's human-in-the-loop proofreading and dedicated citation tools.
Free / Open-sourceAI research tools and expert publication services in one place
Free / Open-sourceAI research tools and expert publication services in one place
