Slop or Not
Use it for people who want native Apple checks or the free online checker for text, images, and provenance clues.
vs
AI Detector
Phrasly vs QuillBot: AI Detector (2026)
Phrasly's free detector sits next to the company's real product: an AI humanizer built to help text slip past checks exactly like it. QuillBot's free detector sits inside a writing suite built around paraphrasing and grammar — a narrower conflict of interest, even with the same 1,200-word ceiling.
Phrasly and QuillBot both offer free AI text detection in the browser, but detection is a secondary feature for Phrasly and a more central one for QuillBot. Phrasly's main product is an AI humanizer that rewrites text to read as human-written; the bundled detector is free and needs no sign-up. QuillBot is a writing suite centered on paraphrasing, grammar, and citation tools; its free detector caps at 1,200 words per scan and 6 scans per day. Slop or Not checks AI-generated text on iPhone and Mac on-device, without an upload.
Privacy, Pricing, and Workflow Matrix
Public product, pricing, documentation, and benchmark pages can change. Source links are listed below the table so the cells stay readable.
| Feature | Slop or Not | Phrasly | QuillBot |
|---|---|---|---|
| Best fit | On-device iPhone and Mac checks or free browser checks for text and images | Rewriting AI text to read as human, with a free bundled detector attached | Writers who want AI detection beside QuillBot writing tools |
| Text detection | Checks writing in the native app and online checker | Free bundled AI detector for ChatGPT, Claude, and Gemini text | Free AI checker for text from ChatGPT, GPT-5, Gemini, Claude, and other platforms |
| Image detection | Checks photos, synthetic images, and provenance clues in the app or online checker | No | Links to a separate AI image detector from the AI detector page |
| Deepfake detection | Covers deepfake and synthetic-image checks as image detection | No | No |
| Metadata and provenance signals | Reads SynthID, C2PA, and IPTC signals in native and online image checks when a file carries them | Not publicly clear | Not publicly clear |
| Manual forensic tools | Reports detector and provenance evidence in native and online checks; not a manual forensic editor | No | No |
| Evidence level | Probability verdict plus provenance signals, with internal-test caveats instead of 99.9% certainty claims | Returns an AI-likelihood percentage with sentence-level highlighting of flagged sentences | Reports AI-generated, human-written and AI-refined, and human-written percentages |
| Browser checker | Free online checker runs in any browser on Numen's private Mac server; submissions are deleted after processing | Free web detector with no sign-up | Free web detector |
| Native Apple app | Native iPhone and Mac app for on-device checks; browser users can use the free online checker | No | No |
| API workflow | Pro Mac app includes a local CLI and MCP server; no public hosted API | Not publicly clear | Not publicly clear |
| Classroom workflow | Useful for checking student writing on-device in the app or through deleted-after-processing online checks | Not publicly clear | Educator use case is listed for reviewing assignments and essays |
| Free tier & limits | Free daily checks in the iPhone and Mac app and a free online checker in any browser. Pro removes the native daily cap; the native app has no per-document word cap. | Detector is free with no sign-up; the AI humanizer is the paid product. | Free tier lists up to 1,200 words per scan and up to 6 scans per day |
| Privacy | Native checks stay on the iPhone or Mac and never send submitted text or images to a third-party AI provider. Online checks run on Numen's own Apple hardware, and submissions are deleted after processing. | Its detector page says submitted content is deleted when you close the tab, is not stored on its servers, and is not used to train its models | States text is used only for the AI detection report and is not sold or shared with third parties for their purposes |
| Main limitation | On-device privacy requires iPhone or Mac; browser checks run on Numen's private Mac server, not on-device | Built as an AI humanizer to help text pass AI detectors; the bundled detector is a secondary feature | Free tier is capped at 1,200 words and 6 scans per day |
✓ = supported, ✕ = not offered, – = not publicly documented. Details reviewed June 2026 from public product, pricing, documentation, and benchmark pages.
Where Slop or Not Fits
One rival's business model is selling the rewrite tool built to beat its own free detector. Slop or Not has no humanizer to sell — it checks text on iPhone or Mac and reports what it finds, nothing to work around.
- Slop or Not runs its own detection models, so no third-party AI provider sees your text or images. Native checks run on the Apple Neural Engine; online checks run on Numen's self-hosted Apple hardware, and submissions are deleted after processing.
- Free daily checks in the iPhone and Mac app and in the free online checker. Pro removes the daily cap, and native checks have no per-document word cap.
How They Compare by Workflow
Slop or Not is not the right answer for every workflow — pick the tool whose strongest workflow matches the check you need to run.
Phrasly
Use it for AI humanizing with a free no-sign-up bundled detector.
QuillBot
Use it for writers who want detection alongside paraphrasing, grammar, and citation tools.
Related Comparisons
Keep comparing adjacent tools before you pick a workflow.
Slop or Not vs QuillBot
QuillBot folds its AI detector into a paraphrasing suite writers already use, but the free tier caps at 1,200 words a scan and six scans a day.
ZeroGPT vs QuillBot
ZeroGPT is a bigger single paste with no other tools; QuillBot is a smaller paste with a paraphrasing suite attached.
Scribbr vs QuillBot
Scribbr and QuillBot share a detection engine — one strips it down for students, the other bundles it with writing tools.
Slop or Not vs Phrasly
Phrasly's free detector needs no sign-up, but the company's real business is the paid humanizer sitting right next to it, built to beat detectors like this one.
Slop or Not vs GPTZero
GPTZero lives in Canvas and Google Docs and never leaves the browser — and it never checks an image, despite the 'AI Vision' name.
Slop or Not vs ZeroGPT
ZeroGPT needs no account and returns a verdict in seconds, but paste in more than 15,000 characters and it stops reading.
Privacy tools from the same team
More From Numen
AI can now fake a profile photo or wrap a scam in a link that looks safe to tap. Numen builds the apps that put you back in charge: spot AI-generated text and images with Slop or Not, run the best open-source models uncensored and private with Private LLM, and strip trackers from links and QR codes before they follow you with Clean Links.
One belief runs through all three: your data belongs to you, and no one else.
