Paperpal vs WriteGo

Two fact sheets from our own research, side by side — pricing, platforms, API access and status re-checked by us rather than quoted from the vendors.

The short answer

Free plan: Both have one
Public API: WriteGo has one; not confirmed by us for Paperpal
Higher Trust score: Paperpal — 82 vs 69 for WriteGo
Best fit: Paperpal: Researchers preparing manuscripts for journal submission · WriteGo: Writing from a stack of PDFs where every claim needs a page citation
Platforms: Paperpal: Web, Chrome extension · WriteGo: Web

From our own records as of each tool's last check. Anything we have not confirmed is left out rather than guessed. How we verify

PaperpalAcademic writing assistant with grammar, plagiarism, AI-detection and journal-fit checks, plus paper search and citations.

WriteGoAcademic writing workspace where quotes keep their page numbers from PDF reading through drafting to review

Side by side

Fact	Paperpal	WriteGo
Category	Grammar & Proofreading	AI Writing Assistants
Pricing model	Freemium	Freemium
Starts at	—	$19.90/mo
Public API	Not confirmed	Yes
Trust score	82 / 100	69 / 100
Platforms	Web, Chrome extension	Web, API
Company	Cactus Communications	—
Launched	2020	—
Last verified	Oct 29, 2026	Oct 16, 2026

What our research says

Paperpal

Paperpal suits non-native English researchers and graduate students who want language editing and submission checks shaped by academic publishing rather than general business writing. People writing marketing copy or casual text, or who want a free plan for heavy use, will hit its focus and its tight free limits.

Pros

Suggestions tuned to academic style rather than general prose
Pre-submission checks for plagiarism, AI text, references and journal fit in one place
Works inside Word, Google Docs and Overleaf
Research search and citation generation alongside the editor

Cons

Free plan is limited to 200 grammar edits a month and lite reports
Prices are shown only after regional detection, which makes comparing plans harder
Plagiarism checks are capped by words per month even on Pro

WriteGo

The page-linked evidence chain is the reason to look at this over a generic writing assistant — quotes do not lose their provenance between reading and drafting, and the integrity pass quotes your draft rather than handing you a percentage. The awkward part is that the same product sells an AI detector and an AI humanizer, which are tools with opposite purposes, and the vendor behind it is nowhere named.

Pros

Verbatim quotes keep page numbers across ChatPDF, notes, drafting and review
Integrity Review quotes your own draft when flagging gaps instead of returning a bare score
Clear credit costs published per pack, from $0.023 down to $0.018 per credit
API access is included from the $19.90 Pro tier rather than reserved for enterprise

Cons

Sells an AI detector and an AI humanizer side by side, which cuts against the integrity framing
No company name, jurisdiction or team is published anywhere on the site
The 'unlimited' Premium and Lifetime tiers still carry an 800 credits/month ceiling

Which one fits

Choose Paperpal if you need

Researchers preparing manuscripts for journal submission
Graduate students writing theses who want plagiarism and reference checks before review
Non-native English academics who need tone and grammar editing in Word or Overleaf

Choose WriteGo if you need

Writing from a stack of PDFs where every claim needs a page citation
Checking a finished draft for unattributed passages before submission
High-volume detection or review work that needs API access