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 Winston AI: AI Detector (2026)
Winston AI earns its keep for an educator who wants plagiarism checks and a shareable report bundled with the AI verdict — real tools, not just a percentage. Once the 14-day trial and its 2,000 credits run out, Slop or Not keeps checking on iPhone or Mac for free, with no character cap.
Winston AI is built for educators and publishers who want AI text detection alongside plagiarism checks, writing feedback, and shareable reports. It claims 99.98% accuracy and offers a 14-day free trial with 2,000 credits; paid plans are required for sustained use. Slop or Not checks AI-generated text and images on your iPhone or Mac on-device, with no per-document word cap in the native app.
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 | Winston AI |
|---|---|---|
| Best fit | On-device iPhone and Mac checks or free browser checks for text and images | AI text detection with plagiarism, reports, writing feedback, and education use cases |
| Text detection | Checks writing in the native app and online checker | AI detector for ChatGPT, Gemini, Claude, and other tools |
| Image detection | Checks photos, synthetic images, and provenance clues in the app or online checker | AI image detector is listed as a product |
| Deepfake detection | Covers deepfake and synthetic-image checks as image detection | AI image detector is described for images and deepfakes |
| 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 | Sentence-level precision and shareable reports are listed |
| Browser checker | Free online checker runs in any browser on Numen's private Mac server; submissions are deleted after processing | Public lite web checker shows a 2,000 character limit |
| 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 | AI content detection API and AI image detection API are listed |
| Classroom workflow | Useful for checking student writing on-device in the app or through deleted-after-processing online checks | Google Classroom integration and education solutions are listed |
| 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. | 14-day free trial with 2,000 credits, no card. Paid plans after that. |
| 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. | Lists SOC 2 certification and GDPR compliance |
| Main limitation | On-device privacy requires iPhone or Mac; browser checks run on Numen's private Mac server, not on-device | Lite checker is English-only and capped at 2,000 characters before sign-up |
✓ = 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 Winston AI, any text or images you submit for analysis are stored to generate your dashboard report. Its policy says that content is removed from active storage within 30 days of the report or account being deleted, though encrypted backups can persist up to 90 days longer, and submissions are not used to train models without opt-in consent. See the Winston AI 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
Slop or Not is the free plan Winston AI doesn't have after day 14 — the same kind of AI check, no trial clock, no per-scan credit to track.
- 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.
Winston AI
Use it for educators and publishers that want reports, plagiarism checks, and text feedback.
Common Questions
Is Winston AI's 99.98% accuracy claim verified independently?
No — that figure comes from Winston AI's own published methodology, not an outside study, though the company does explain its training approach. Slop or Not's internal accuracy numbers carry the same results-vary caveat: real testing, not third-party audited.
Does Slop or Not offer plagiarism checking like Winston AI?
No — Slop or Not checks whether text or images appear AI-generated. Plagiarism checking isn't part of the product.
Does Winston AI have a permanent free tier?
No — Winston AI offers a 14-day free trial with 2,000 credits, then requires a paid plan. Slop or Not's free daily checks don't expire.
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 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.
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.
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.
