JustDone AI Detector Review: Accuracy Tested in 3 Scenarios

JustDone AI detector is getting a lot of attention, but you might be wondering—how accurate is it really? Can it tell AI text from human writing reliably? 

In this article, I’ll walk you through how it works, test it on different types of text, and break down its pros, cons, and pricing. Next, we explore its performance across different text scenarios. let’s dive in.

What Is JustDone?

JustDone is an AI-powered productivity and writing platform designed to help users create high-quality content quickly. It combines task automation, content generation, and AI detection tools, making it a versatile option for students, writers, and marketers.

What Is JustDone AI Detector?

JustDone AI Detector is a free online tool designed to identify content generated by AI models such as ChatGPT, GPT-4, Claude, and Gemini. It analyzes text patterns, keywords, and other linguistic elements to detect AI-generated material, offering results. Users can either paste text, upload documents, or scan webpages, while the tool also cross-checks outputs with platforms like Originality, Scribbr, and Copyleaks for enhanced reliability.

Extra tools in JustDone:

• AI Humanizer: Refines AI-generated text to sound natural, personal, and academically ready.

• Plagiarism Checker: Quickly identifies copied or poorly rewritten content.

• Text Summarizer: Breaks down complex ideas into concise summaries for faster understanding.

• AI Citation Generator: Helps properly cite sources, paraphrase AI content, and format quotes correctly. 

How Accurate Is JustDone AI Detector?

JustDone AI detector claims to provide fast and reliable detection of AI-generated text, supposedly distinguishing between human and AI writing with high precision. 

To see how well it lives up to this claim, we conducted a series of tests using different types of text: pure AI, mixed AI and human writing, and humanized AI text. Each test aimed to evaluate the detector’s accuracy in practical scenarios.

Test 1: Pure AI Text

Setup:

For the first test, we generated a paragraph entirely with ChatGPT-5. The text was fully AI-written, covering a neutral academic topic without any human editing. This allowed us to see if JustDone could identify clearly AI-generated content.

Results:

The detector labeled the text as 100% AI.

Observations:

This result aligns with expectations and confirms that JustDone performs well when analyzing purely AI-generated text. It shows the detector can confidently recognize distinct AI patterns without false positives in fully automated writing.

Test 2: Mixed AI + Human Writing

Setup:

In this test, we took a pre-ChatGPT academic paragraph written entirely by a human and asked ChatGPT-5 to continue it. The resulting text combined 187 human-written words (41%) with 267 AI-generated words (59%), creating a hybrid of human and AI writing.

Results:

JustDone detected the text as 78% human.

Observations:

In this scenario, JustDone AI detector was somewhat confused. It leaned toward identifying the text as mostly human, despite nearly 60% of it being AI-generated. 

This indicates that JustDone can struggle with blended writing, where human and AI elements are combined, showing its limitations in nuanced detection scenarios.

Test 3: Humanized AI Text by QuillBot

Setup:

For the third test, we took the 100% AI text from Test 1 and processed it through QuillBot’s AI Humanizer in basic mode. The goal was to see if humanizing AI text could reduce the detected AI percentage.

Results:

JustDone labeled the humanized text as 62% AI.

Observations:

JustDone was able to identify that the text was still partially AI-generated, even after humanization. While the score dropped compared to the pure AI test, it demonstrates that the detector can catch simple attempts to disguise AI writing.

Pros and Cons of JustDone AI Detector

Pros:

• Ease of use: The interface is straightforward, allowing users to paste text, upload files, or scan webpages without any technical setup.

• Extra features: Beyond AI detection, tools like the AI Humanizer, Plagiarism Checker, Text Summarizer, and AI Citation Generator provide added value.

• No subscriptions or login required: Users can access the detector quickly and instantly, without creating an account.

Cons:

• False positives: Mixed or humanized AI text can sometimes confuse the detector, leading to inaccurate results.

• Usage limits without subscription: Free users are restricted to three checks, with a maximum of 250 words per test, which can be inconvenient for longer content.

• Lack of transparency: The tool only shows the final result, without sentence-level analysis or detailed explanations, making it harder to understand why a text was flagged.

JustDone Pricing

JustDone offers both free and paid options, with clear differences in usage limits and features.

Free Trial:

Limited to three checks, with a maximum of 250 words per check.  

Paid Plans:

Paid plans remove all usage limits, allowing unlimited checks and word counts.

They also unlock additional writing tools, including the AI Detector, AI Humanizer, Plagiarism Checker, Grammar Checker, and Paraphraser.

Plans start with a 7-day trial for $2, then range from $19.99–$49.99 per month for monthly or annual subscriptions, giving full access to all tools and unlimited usage.

Can You Bypass JustDone AI Detector?

The short answer? Yes—but not with quick tricks. 

From my experience testing this, simple word swaps or basic rewriting just don’t cut it. In Test 3, I took 100% AI text and ran it through QuillBot’s basic humanizer, thinking it might fool the detector. Nope. JustDone still flagged it as 62% AI. 

The issue is that light paraphrasing only shuffles words around, leaving the same sentence patterns and phrasing that detectors are trained to spot.

That’s where EssayDone Humanizer comes in. Unlike basic tools, it tweaks sentence structure, word choice, rhythm, and overall flow, breaking up the mechanical patterns AI usually leaves behind. 

When I ran the 100% AI text from Test 1 through EssayDone Humanizer, the AI detection score dropped all the way to 0%.

Alternatives to JustDone AI Detector

FAQ

Q: Is JustDone 100% accurate?

A: No AI detector is perfect. JustDone performs well with pure AI text, but mixed or humanized content can sometimes confuse it, producing false positives or underestimates.

Q: How to bypass JustDone AI detector?

A: Simple rewriting or word swaps aren’t enough. Professional humanizers, like EssayDone Humanizer, adjust sentence structure, vocabulary, and flow to reduce detectable AI patterns.

Q: Will my professor use an AI detector?

A: Many professors are adopting AI detection tools, but policies vary by school and course. Always check your institution’s guidelines before submitting AI-assisted work.

Q: Can I use AI detectors on my own work before submission?

A: Yes. Running your own drafts through detectors can help identify overly AI-like patterns, letting you revise text for clarity, originality, and a more human tone.

Q: Are AI detectors legal?

A: Yes. AI detection tools are legal to use. However, how you use them—especially in academic settings—should comply with school or institutional policies.

Q: Is JustDone AI Detector free?

A: Yes, it offers a free version with three checks of up to 250 words each. Paid plans remove limits and provide full access to additional writing tools.

Conclusion

In this review, I went through how JustDone AI detector works, including its main features, testing results, pros and cons, and pricing. 

I also looked at how it handles pure AI text, mixed human-AI writing, and humanized content, showing where it succeeds and where it struggles. 

My goal was to give a clear, realistic picture of what to expect if you use it. I hope this article helps you better understand AI detection and make informed decisions for your own writing.