AI Detector By Custom Writings vs Moxby AI Content Detector (formerly ContentDetector.AI)

CustomWritings runs a free AI detector inside its HowToWrite hub where students can paste text or upload DOC, TXT, PDF, and PowerPoint files to see what share of a paper looks machine-written. The checker returns an overall percentage and color-codes passages as likely or highly likely AI output, then lets you download a PDF report. It also ships as a browser extension for checking page content without leaving the site you are on.

Most standalone detectors sell themselves as neutral scanners. This one is built by an essay writing company that has offered academic help for 20 years and added combined AI and plagiarism screening to its own order checks in 2023. That parent service context shows up in the framing: the tool targets students who want to self-check before turning work in, not enterprise teams auditing marketing copy. The trade-off is independence, but the upside is a detector sitting next to free plagiarism, citation, and writing guide tools on the same domain.

Students prepping assignments, teachers reviewing suspicious submissions, and writers who lean on grammar tools all have reason to run a pass here. The FAQ notes that heavy grammar assist and stiff, template-like phrasing can sometimes trip the model even on human drafts, so shorter pieces under roughly 275 words may return less reliable scores than a full essay page.

Moxby AI Content Detector is an AI detection plugin for the Moxby desktop agent that scans Doc editor drafts for robotic writing patterns. It flags repetitive phrasing, predictable sentence flow, and thin sections at the sentence level, then pairs those signals with an AI Humanizer skill that guides rewrites inside the same workspace. You install it from the Moxby marketplace after downloading Moxby for Mac or Windows.

Where standalone paste-and-check detectors chase authorship verdicts, this tool takes the opposite stance: it does not claim to prove whether text was written by AI or a person. It treats detection output as editorial guidance for writers who want to polish AI-assisted drafts before publishing, which is a narrower and more honest job than classroom misconduct screening.

Content marketers, SEO teams, editors, and creators can run an AI Scan from the Doc editor, review flagged sentences, and use the Humanizer skill to add examples, vary structure, and tighten voice. Analysis runs locally through the Moxby gateway, so scanned text is not stored on vendor servers. The marketplace listing is free, though using Moxby itself may eventually require a paid seat if you outgrow the free message allowance.