About NotGPT
NotGPT is a mobile app for checking whether text or an image is likely to be AI-generated, with a built-in Humanize rewriter for drafts that read too much like a machine. It is made by Fuyu Network Technology Co., Ltd. and is available on iPhone, iPad and Android. NotGPT is not related to NoteGPT, a different product with a similar name.
What NotGPT does
AI text detection
Gives one result for the whole text: an AI-likelihood score from 0 to 100%, a confidence level, and a breakdown of how much reads as AI-generated, human-written or mixed.
AI image detection
Returns the probability that an uploaded photo or image was generated by AI.
Humanize
Rewrites text at Light, Medium or Strong intensity so it reads more naturally, while keeping the meaning.
How detection works
AI-generated text tends to be more statistically predictable than human writing: word choices are more expected, and sentence length varies less. NotGPT’s detector looks at patterns like these and estimates how closely a text matches writing produced by AI models. Image detection works the same way in principle, looking for statistical traces that image generators leave behind. In both cases the output is a probability, not a fact about who made the content.
What a score can and cannot tell you
- No AI detector is 100% accurate, and different detectors often disagree on the same text.
- Formal, heavily edited, technical or non-native writing can score higher than it should.
- Short passages give less reliable results than longer ones.
- A score should never be the only evidence that someone used AI. Read it together with the text, drafts and other context.
About our blog
Articles on the NotGPT blog are written by the NotGPT Team. We explain how AI detectors and humanizers work, review tools people ask about, and describe NotGPT only by what the app actually does. If you spot a mistake, email us and we will correct it.
Your data
Text, images and results you check are saved to your account’s detection history so you can review them later, and you can delete any record or your whole account at any time. We do not use your content for training or marketing.
Get in touch
Questions, feedback or corrections: support@notgpt.app