Slop or Not
Use it for people who want native Apple checks or the free online checker for text, images, and provenance clues.
vsWIAI Detector
Slop or Not vs Was It AI Generated: AI Detector (2026)
Was It AI Generated fits a developer who wants one cloud API for text, images, voice, and video and is willing to buy credits for it. Slop or Not fits the person who would rather not upload the file at all: the iPhone, iPad, and Mac apps check text and images on the device, and the free online checker covers everyone else.
Was It AI Generated is a cloud detection service. Text, images, documents, voice, and video go to its servers, and developers reach the same checks through a credit-based REST API. It scores text with its own tropa-3 model and gives 1,000 free credits after email verification. Slop or Not checks text and images on iPhone, iPad, and Mac on-device, and its free online checker runs on Numen's private Mac server.
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 | WIWas It AI Generated |
|---|---|---|
| Best fit | On-device iPhone and Mac checks or free browser checks for text and images | Cloud detection API for text, images, documents, voice, and video, aimed at developers and educators |
| Text detection | Checks writing in the native app and online checker | Its own tropa-3 model returns a calibrated 0-100 score, per-sentence scores, and a "possibly humanized" hint |
| Image detection | Checks photos, synthetic images, and provenance clues in the app or online checker | Image check returns an AI likelihood with C2PA fields; its SynthID page claims watermark detection for Gemini and ChatGPT images |
| Deepfake detection | Covers deepfake and synthetic-image checks as image detection | Deepfake detector page, with paid voice and video detection |
| Metadata and provenance signals | Reads SynthID, C2PA, and IPTC signals in native and online image checks when a file carries them | Reads C2PA content credentials and provenance signals on images |
| 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 | Verdict bands and per-sentence scores, plus a published benchmark it says to treat as upper bounds |
| Browser checker | Free online checker runs in any browser on Numen's private Mac server, not a third-party AI provider's | Web checker offers one free check before sign-up |
| Native Apple app | Native iPhone and Mac app for on-device checks; browser users can use the free online checker | An iPhone app, "Was It AI?", is listed on the App Store under the developer name REPHRASY |
| API workflow | Pro Mac app includes a local CLI and MCP server; no public hosted API | Documented REST API with a public OpenAPI spec and wai_ keys |
| Classroom workflow | Useful for checking student writing on-device in the app or through the free online checker | Educator page and thesis check; its FAQ says there is no native LMS integration yet |
| 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 word cap per document or per month. | 1,000 free credits after email verification, then one-time credit packs or monthly plans |
| 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, never a third-party AI provider's. | Every check runs in its cloud; its policy says uploaded content is deleted right after processing |
| Main limitation | On-device privacy requires iPhone or Mac; browser checks run on Numen's private Mac server, not on-device | Cloud-only, and its App Store developer name, REPHRASY, is also an AI humanizer marketed to bypass Turnitin and GPTZero |
✓ = supported, ✕ = not offered, – = not publicly documented. Details reviewed September 2026 from public product, pricing, documentation, and benchmark pages.
Where your text & images go
With Was It AI Generated, the text, images, audio, or other files you submit are processed on its servers to return a score, and it collects your email address and usage data when you sign up. Its policy says uploaded content is deleted right after processing, typically within minutes, and API request logs are kept for up to 90 days. See the Was It AI Generated 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, never a third-party AI provider's.
Where Slop or Not Fits
Every Was It AI Generated check leaves your device. Slop or Not's apps keep the text or photo on your iPhone, iPad, or Mac, and the check still works without an internet connection.
- Slop or Not runs its own detection models, so no third-party AI provider sees your text or images. Native checks run on Apple silicon, accelerated by the Apple Neural Engine; online checks run on Numen's self-hosted Apple hardware.
- 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 word cap per document or per month.
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.
WI
Was It AI Generated
Use it for a credit-based cloud detection API that covers text, images, voice, and video.
Common Questions
Does Was It AI Generated run on-device?
No. Every check runs in its cloud, and its privacy policy says uploaded content is deleted right after processing. Slop or Not's iPhone, iPad, and Mac apps run detection on the device, so the text or photo never leaves it.
Who publishes the Was It AI? iPhone app?
The App Store lists the developer as REPHRASY. Rephrasy's own website sells an AI humanizer that it describes as a way to bypass Turnitin and GPTZero.
How accurate is Was It AI Generated?
In its own September 2026 benchmark, it reports that tropa-3 caught 95.6% of raw AI text and 57.7% of humanized AI text. It adds that the AI samples came from models and humanizers the model was trained on, and calls the figures upper bounds. Slop or Not's text accuracy sits on RAID, the public third-party benchmark, where it catches 99.5% of AI text at a 5% false-positive rate.
Which one checks images for SynthID watermarks?
Both say they do. Slop or Not reads Google DeepMind's SynthID watermark in Google and OpenAI images, calibrates each provider separately, and links every hit to Google's and OpenAI's own verifiers so you can check the result. Was It AI Generated's SynthID page claims detection for Gemini and ChatGPT images.
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.
