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
Originality.ai vs Copyleaks: AI Detector (2026)
Originality.ai fits a solo writer or small agency paying by the credit for text QA, with readability and fact-checking layered on top. Copyleaks fits a larger organization that needs the same integrity checks spread across an LMS, an API, and a browser extension.
Originality.ai and Copyleaks both catch AI text and plagiarism, but they serve different scales. Originality.ai is a pay-as-you-go platform for writers, publishers, and agencies: credits cover about 100 words each, and it includes readability and fact-checking alongside detection. Copyleaks is an enterprise suite that extends to AI images, video, and deepfakes, and integrates with Canvas, D2L Brightspace, Moodle, and other LMS platforms. Slop or Not handles private on-device spot checks for text and images on iPhone and Mac.
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 | Originality.ai | Copyleaks |
|---|---|---|---|
| Best fit | On-device iPhone and Mac checks or free browser checks for text and images | Content QA for writers, publishers, agencies, and education users | Content integrity suite for education, enterprise, developers, and publishers |
| Text detection | Checks writing in the native app and online checker | AI Checker for AI writing and paraphrased text | AI text detector with model coverage and multilingual support |
| Image detection | Checks photos, synthetic images, and provenance clues in the app or online checker | No | AI Image Detector is listed in the AI Detector product menu |
| Deepfake detection | Covers deepfake and synthetic-image checks as image detection | No | AI Video Detector and Deepfake Detector are listed |
| 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 | Sentence-level highlighting, reports, scan history, and writing replay are listed | AI Logic, AI phrases, source match, highlights, and reports are described |
| Browser checker | Free online checker runs in any browser on Numen's private Mac server; submissions are deleted after processing | Chrome Extension and Google Docs workflow are listed | Browser extension and Google Docs add-on are listed |
| 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 | API access is listed for Enterprise and API integrations | Enterprise AI detection via API is listed |
| Classroom workflow | Useful for checking student writing on-device in the app or through deleted-after-processing online checks | Education customers and Moodle plugin are listed | LMS integration for Canvas, D2L Brightspace, Moodle, Blackboard, Schoology, Edsby, and Sakai is 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. | Pay-as-you-go credits; one credit covers ~100 words. No free tier. | Free web scan limit is listed as up to 25,000 characters without logging in |
| 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 encryption, data-not-used-in-training controls, and one-click scan-history deletion | Lists GDPR, SOC 2, SOC 3, PCI DSS, and NIST RMF references |
| Main limitation | On-device privacy requires iPhone or Mac; browser checks run on Numen's private Mac server, not on-device | Built around text and content QA, not image forensics | Full sentence-level insights and enterprise integrations require account or paid workflows |
✓ = supported, ✕ = not offered, – = not publicly documented. Details reviewed June 2026 from public product, pricing, documentation, and benchmark pages.
Where Slop or Not Fits
A credit balance on one side, an enterprise account on the other — both stand between a reader and a free answer. Slop or Not clears that bar for a single text-or-image check: free, on iPhone or Mac, nothing to buy or request access to first.
- 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.
Originality.ai
Use it for publishers and agencies that need text QA at volume.
Copyleaks
Use it for organizations that need content integrity controls across LMS, API, and browser workflows.
Related Comparisons
Keep comparing adjacent tools before you pick a workflow.
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.
GPTZero vs Originality.ai
GPTZero fits a teacher's free plan; Originality.ai fits a publisher's paid credit meter.
GPTZero vs Copyleaks
GPTZero is a teacher's browser tool; Copyleaks is a district's enterprise suite with image and deepfake detection built in.
Winston AI vs Originality.ai
Winston AI adds image detection but the trial expires; Originality.ai never expires but never stops billing per credit.
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.
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.
