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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Photo Forensics
Slop or Not vs FotoForensics: Photo Forensics (2026)
FotoForensics teaches real forensic skills: Error Level Analysis, metadata reads, raw output you learn to interpret yourself, and it costs nothing. But every upload becomes public. Its own FAQ says so, not fine print. For a private answer on one photo, Slop or Not checks it on-device on iPhone or Mac and never uploads it anywhere.
FotoForensics is a free tool for manual photo forensics: Error Level Analysis, metadata inspection, raw data you interpret yourself. It's taught people to read forensic clues since long before AI detectors existed. The catch is privacy: its own FAQ says uploads are treated as public, not private, and stay on the server. Slop or Not runs the AI-authenticity check on your iPhone or Mac instead, on-device, so the photo never leaves your hands.
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 | FotoForensics |
|---|---|---|
| Best fit | On-device iPhone and Mac checks or free browser checks for text and images | Manual photo forensics training and Error Level Analysis |
| Text detection | Checks writing in the native app and online checker | No A photo forensics service for images, not an AI text detector |
| Image detection | Checks photos, synthetic images, and provenance clues in the app or online checker | No Manual ELA and metadata inspection, not an AI image-detection verdict |
| 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 | Metadata tutorials and metadata analysis are listed |
| Manual forensic tools | Reports detector and provenance evidence in native and online checks; not a manual forensic editor | Public service shows raw data for user interpretation |
| Evidence level | Probability verdict plus provenance signals, with internal-test caveats instead of 99.9% certainty claims | Does not draw conclusions; users interpret analysis output |
| Browser checker | Free online checker runs in any browser on Numen's private Mac server; submissions are deleted after processing | Browser upload and URL upload are available |
| 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 | Not publicly clear |
| 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 public service for personal use |
| 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. | Public site warns there is no privacy for uploaded pictures |
| Main limitation | On-device privacy requires iPhone or Mac; browser checks run on Numen's private Mac server, not on-device | Not intended for commercial, business, legal, or bulk analysis |
✓ = 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 FotoForensics, your uploaded photo is processed on its server for Error Level Analysis, and is not treated as private. Its FAQ says pictures get a shareable public link and remain on the server for at least three months, and potentially indefinitely. See the FotoForensics FAQ 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
FotoForensics says it outright: uploads are public, not private. Slop or Not runs the opposite way: the photo stays on-device and never leaves your iPhone or Mac.
- 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.
FotoForensics
Use it for manual photo forensics training and ELA inspection.
Common Questions
Is my photo private on FotoForensics?
No. Its own FAQ says uploads are treated as public, not private. Slop or Not checks images on-device on iPhone or Mac; the photo never leaves your device.
Does FotoForensics give a direct AI-generated verdict?
No. It surfaces Error Level Analysis and metadata for you to interpret yourself; it doesn't draw a conclusion. Slop or Not returns a direct verdict on whether an image looks AI-generated.
Is FotoForensics still useful for learning forensic technique?
Yes. That's genuinely what it's built for: raw ELA and metadata output for someone learning to read the signals themselves. Slop or Not skips the learning curve and gives a verdict instead, on-device.
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.
