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
FotoForensics vs Forensically: Photo Forensics (2026)
Forensically keeps every image on the user's own computer, with an offline mode that needs no connection at all — real privacy, not a claim of it. FotoForensics uploads to a server it says outright is public, but its tutorials have taught manual forensic technique for longer than most AI detectors have existed.
FotoForensics and Forensically both provide manual photo forensics tools, but they take opposite approaches to privacy. FotoForensics works by uploading images to its server; those uploads are treated as public and retained for months. Forensically runs entirely in the browser: images stay on the user's computer and never reach a server, with offline mode available in modern browsers. Slop or Not gives an AI-authenticity verdict directly on iPhone or Mac, without requiring manual forensic interpretation.
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 | Forensically |
|---|---|---|---|
| Best fit | On-device iPhone and Mac checks or free browser checks for text and images | Manual photo forensics training and Error Level Analysis | Hands-on browser photo forensics |
| Text detection | Checks writing in the native app and online checker | No A photo forensics service for images, not an AI text detector | No Manual photo forensics tools 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 | No Manual forensic layers for interpretation, not an AI image-detection verdict |
| 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 | Metadata tutorials and metadata analysis are listed | Metadata, C2PA, JPEG, string extraction, and geo tag tools 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 | Includes clone detection, ELA, noise analysis, level sweep, luminance gradient, PCA, metadata, and JPEG tools |
| 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 | Described as a magnifying glass that helps reveal hidden details but does not decide true or false |
| 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 | Free browser-based tool with offline mode |
| 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 | 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 | Free online photo forensics tools |
| 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 | Images stay on the computer; offline mode is supported in modern browsers |
| 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 | Manual inspection tool; it cannot tell true from false on its own |
✓ = supported, ✕ = not offered, – = not publicly documented. Details reviewed June 2026 from public product, pricing, documentation, and benchmark pages.
Where Slop or Not Fits
FotoForensics says outright that uploads are public, and Forensically hands over raw forensic layers without ever naming a verdict. Slop or Not does both jobs at once — a private, on-device check that returns a direct answer instead of a stack of clues to read.
- 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.
Forensically
Use it for hands-on image inspection that stays in the browser.
Related Comparisons
Keep comparing adjacent tools before you pick a workflow.
Slop or Not vs FotoForensics
FotoForensics teaches genuine manual forensic technique for free, but its own FAQ says uploaded images are treated as public, not private.
Slop or Not vs Forensically
Forensically runs its manual forensic tools client-side with a real offline mode, but it never tells you whether an image is AI-generated. That call stays yours.
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.
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.
