AI writing tools like ChatGPT and Claude have changed how we create content. And with that change comes a new problem: how do you tell if something was written by AI? More importantly, how do you make AI text sound more human?

That’s what JustDone tries to solve. It’s not just another AI detector that says “yep, that’s AI” and leaves you hanging. Instead, it shows you what looks robotic and helps you fix it.

The platform includes several tools: an AI detector, a humanizer, and a plagiarism checker. What makes it different? It actually explains why your text got flagged, then rewrites those parts while keeping your original meaning intact.

What is JustDone AI?

JustDone is an online platform that helps you spot AI-generated text and turn it into something that sounds human. Simple as that.

It combines three main tools. First, the AI detector checks your text and tells you how much of it looks like AI wrote it. It can recognize content from ChatGPT, GPT-4, Claude, Gemini, and other popular AI models.

Second, the humanizer rewrites flagged parts so they sound natural. And third, there’s a plagiarism checker to make sure your content is original.

Here’s how it works: JustDone uses a detection system trained on over a million writing samples. It looks for things AI typically does—repetitive patterns, overly perfect grammar, sentences that all sound the same.

The tool is popular with students, teachers, journalists, and writers who want their text to feel authentic. Let me give you a real example of how it works.

I tested it with a student essay about technology. The detector flagged it as 33%

AI-generated. Why? The sentences had perfect symmetry. Transition words popped up way too often. Everything sounded polished to the point of being robotic. But here’s the interesting part—it didn’t flag sentences that had a more natural flow, formulas, and avoided common AI phrases. So the accuracy seemed pretty spot-on.

JustDone recommended humanizing the text. One click later, the results were dramatic. The humanizer completely restructured the sentences and replaced the robotic-sounding words with more natural alternatives. When I ran the detection again, it showed 0% AI.

One thing to note though—you should still proofread the final output. Sometimes there are minor grammar or punctuation quirks that need fixing.

Key Features of JustDone AI

JustDone has quite a few features. Going through all of them would take forever, so I’ll focus on the ones that actually matter. Here’s what stands out.

AI Detection that gets context

JustDone doesn’t just look for “AI words.” It digs deeper. The tool analyzes rhythm, transitions, vocabulary patterns, and 11 different AI writing habits. Things like repetition, monotone sentences, or perfectly balanced clauses.

According to their testing, the false positive rate is under 1%. That means it rarely mistakes human writing for AI.

I tested this with a sample paragraph that mixed both human and AI writing styles. The detector gave it a 70% AI score. It flagged AI patterns like repetitive phrases (“On Tuesday,” “On Thursday,” “On Friday,” etc.), too similar clickbait titles—all classic AI favorites. The sentences were also too smooth and repetitive, which raised red flags.

But here’s what impressed me. The detector ignored things like double spaces and minor formatting issues. It recognized those as human typos, not AI quirks. That shows it’s actually smart about what it’s looking for.

The solution is straightforward. Use the built-in humanizer to rewrite the AI parts. Your meaning stays the same, but everything sounds more natural.

AI Humanizer for quick fixes

This is where things get interesting. The humanizer takes robotic AI text and makes it sound like a real person wrote it.

It works in any language. The system was trained on millions of AI-to-human text pairs and tested against JustDone’s own detector plus competitor tools.

Here’s what it does: keeps your original structure and meaning, but adjusts the tone and flow. It handles everything from short paragraphs to long research papers.

You get three modes to choose from. “Sound human” makes light changes. “Auto” is the middle ground. “Bypass detectors” goes all-in with heavy rewrites.

The best part? It connects directly with the AI detector. Detect, humanize, recheck—all in one place. Keep going until it sounds exactly right.

Plagiarism detection

JustDone isn’t just about AI. It also checks if your content is original.

The plagiarism checker uses AI to scan your text across multiple layers. It catches exact matches and paraphrased content too. You get a clear view of how unique your writing really is.

Here’s how the Plagiarism checker report looks in JustDone:

Since JustDone focuses on education, it goes beyond basic web searches. It scans sources across Google, Bing, and other search engines. You can verify your text in seconds.

Combine this with the AI detector and you’ve got a complete toolkit. Perfect for students, writers, and anyone who needs to check both AI usage and originality.

Multi-language support

JustDone works with over 25 languages. English, Spanish, Portuguese, German, French, Turkish, Italian — you name it.

The detection model adjusts for each language’s sentence structure and rhythm. That makes it one of the few detectors built for global users.

I wanted to test how well it actually works with non-English content, so I generated a Spanish essay using ChatGPT-5. I pasted it straight into JustDone without making any changes. Even though GPT-5 is known for triggering false negatives in many detectors, JustDone nailed it with a 99% AI score.

That’s impressive because detecting AI in different languages is tricky. Each language has its own patterns and quirks. The fact that JustDone caught it so accurately shows the multi-language support isn’t just a gimmick—it actually works.

Easy workflow integration

You can upload files in DOCX, PDF, or TXT format. Or just paste your text directly. JustDone also offers a browser extension and API for businesses.

When you’re done, export your results as PDF, DOCX, or TXT. Or copy and paste—whatever works for you.

How to Use JustDone AI

Now that you know what JustDone does, let’s talk about actually using it. It’s pretty simple. Go to justdone.com and sign up. Takes like two minutes. Email, password, done.

Once you’re in, you’ll immediately see where to paste your text. You can also drop a file in a DOCX, PDF, or TXT file—JustDone supports them all.

Click “Detect AI” and wait a bit. Not long, just a few seconds.

You’ll get a score that tells you how much looks like AI. The breakdown shows you which specific parts got flagged and which didn’t. Color-coded, so it’s easy to see what’s what.

Want to fix it? Hit “Humanize.” It rewrites the AI parts but keeps what you actually wanted to say.

When it looks good, export it or copy it. Your choice. The whole process? Maybe a minute or two, tops.

How accurate is JustDone?

JustDone claims a false positive rate below 1%. That’s based on their internal testing. It works best on academic essays, articles, and blog posts.

But here’s the thing. No detector is perfect. Some edge cases can trip it up—things like lists, outlines, or technical text with lots of repetition. These might get flagged as AI even when they’re not. Same issue you’d see with Turnitin or Copyleaks.

That’s why JustDone pushes you to manually review the results. Don’t just trust the score blindly. Use the humanizer to fix what needs fixing, but always give it a final check yourself.

JustDone’s limitations

JustDone is solid, but it’s not flawless. Here are a few things to keep in mind.

First, complex or technical content can confuse the detector. If your text has repeated terms or formulas, it might look like AI patterns. That can mess with your accuracy score.

The humanizer sometimes makes your text sound more neutral than you’d like. It helps with sounding natural, sure. But you might need to go back and add your personal style afterward.

There’s also no free plan. You can test the AI Detector and Rewriter on short texts (up to 250 words) before committing to a subscription. But that’s about it.

Still, even with these downsides, JustDone makes the whole process easier. You can detect, humanize, and refine your content quickly. No matter how long your document is or how many times you need to tweak it.

Pricing and Plans

JustDone offers a few different pricing options. Here’s what they look like:

Trial: $2 for 7 days, then it jumps to $39.99 per month Unlimited annual plan: $9.99/month if you pay yearly Unlimited monthly plan: $19.99/month, billed monthly

No matter which plan you pick, you get full access to everything. No limits on document length, language, or how much you use it.

JustDone vs. Competitors

Not sure if JustDone is right for you? Maybe you need different features or want to see what else is out there. Here’s a quick comparison with other popular AI detection and humanizing tools.

Each tool has its strengths. Copyleaks has slightly better accuracy on false positives. GPTZero is decent but less accurate overall. Originality.ai has a humanizer but only works in English.

JustDone sits in the middle with solid accuracy, a built-in humanizer, and support for 25+ languages. Plus that citation generator if you need it.

Verdict: Should You Use JustDone AI?

If you need a tool that both detects and humanizes AI text, JustDone is worth checking out.

It’s more than just a detector. You get an all-in-one workflow—detect AI, rewrite it, humanize the text, check for plagiarism, and more. Everything students, writers, and creators actually need in one place.

The design is clean. The false positive rate is low. And it’s built with academic use in mind, which matters if you’re a student or educator.

JustDone won’t be perfect for everyone. But if you want a straightforward tool that helps make AI text sound genuinely human without hiding that you used AI, this could be it.

FAQ

Is JustDone’s AI detector accurate?

Yeah, it’s pretty accurate. JustDone claims a 99% accuracy rate with a false positive rate under 1%. That puts it among the more reliable AI detectors out there.

Can it detect GPT-4 or Claude-generated text?

Yep. It recognizes text from all the major AI models—GPT-3, GPT-4, GPT-5, Claude, Gemini, you name it.

Can AI-flagged text be refined to read more naturally?

Absolutely. The humanizer tool is built right into the platform. Once text gets flagged as AI, you can rewrite it with one click. Simple and hassle-free.

Is JustDone AI free?

No, but you can try out the demo features first. The AI Detector and AI Rewriter let you test short texts up to 250 words. See how it smooths out AI-generated content before committing to a subscription.