Slop or Not
Use it for people who want native Apple checks or the free online checker for text, images, and provenance clues.
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AI Detector
Slop or Not vs QuillBot: AI Detector (2026)
QuillBot's free detector makes sense bundled with the paraphrasing and citation tools a writer already has open — six scans a day, 1,200 words each, no separate app to install. Push past that daily cap and Slop or Not keeps checking on iPhone or Mac with no per-document word cap, and Pro lifts the native daily cap entirely.
QuillBot is a writing suite built around paraphrasing and grammar tools; it includes a free AI text detector for writers who want those features together. The free detector caps at 1,200 words and 6 scans per day. Slop or Not checks text and images without a per-document word cap in the native app, and native iPhone and Mac checks run on-device.
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 | QuillBot |
|---|---|---|
| Best fit | On-device iPhone and Mac checks or free browser checks for text and images | Writers who want AI detection beside QuillBot writing tools |
| Text detection | Checks writing in the native app and online checker | 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 | Links to a separate AI image detector from the AI detector page |
| Deepfake detection | Covers deepfake and synthetic-image checks as image detection | 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 |
| Manual forensic tools | Reports detector and provenance evidence in native and online checks; not a manual forensic editor | No |
| Evidence level | Probability verdict plus provenance signals, with internal-test caveats instead of 99.9% certainty claims | 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 |
| Native Apple app | Native iPhone and Mac app for on-device checks; browser users can use the free online checker | No |
| API workflow | Pro Mac app includes a local CLI and MCP server; no public hosted API | Not publicly clear |
| Classroom workflow | Useful for checking student writing on-device in the app or through deleted-after-processing online checks | 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. | 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. | 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 | 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.
Sources reviewed
Where your text & images go
With QuillBot, text you paste into its tools, including the AI detector, is used to provide the service, along with account and usage data. Its policy says storing and training on your text inputs is on by default, with an opt-out in account settings; Team Plan inputs are excluded from training. See the QuillBot privacy policy for details. Slop or Not keeps native checks on your iPhone or Mac, and online checks run on Numen's own Apple hardware and are deleted after processing.
Where Slop or Not Fits
QuillBot's free detector stops at six scans a day; Slop or Not takes a full document with no per-document word cap, and Pro lifts the daily cap entirely, all on the same iPhone.
- 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.
QuillBot
Use it for writers who want detection alongside paraphrasing, grammar, and citation tools.
Common Questions
Does QuillBot's free AI detector have usage limits?
Yes — the free tier allows up to 1,200 words per scan and up to 6 scans per day. Slop or Not has no per-document word cap in the native app; Pro removes the daily check limit.
Does QuillBot detect AI-generated images?
Only through a link-out — QuillBot's AI detector page doesn't check images itself; it points to a separate tool for that. Slop or Not checks text and images together in one app, including SynthID, C2PA, and IPTC provenance reads.
Can I check a document privately with QuillBot?
Reasonably — QuillBot says it doesn't sell or share submission text with third parties. Slop or Not goes further: native checks on iPhone and Mac run entirely on-device, so nothing is transmitted at all.
Related Comparisons
Keep comparing adjacent tools before you pick a workflow.
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.
Slop or Not vs Originality.ai
Originality.ai tracks every scan in a dashboard built for agencies, but there's no free tier — every check burns a credit at roughly 100 words apiece.
Slop or Not vs Copyleaks
Copyleaks plugs into seven different LMS platforms and even flags deepfake video, but the sentence-level detail and full reporting sit behind an enterprise account.
Slop or Not vs Winston AI
Winston AI bundles plagiarism checks and writing feedback with its AI verdict, but the free lite checker stops at 2,000 characters and the real trial runs out in 14 days.
Slop or Not vs Turnitin
Turnitin's AI-writing indicator is built into a workflow schools already trust, but there's no public version — access runs through a school subscription or not at all.
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.
