Compare the Bill. Keep Your Voice.
JustDone AI's $2 trial lasts 7 days, then renews at $29.99/month unless you cancel at least 24 hours before it ends. SupWriter Basic is $9.99/month for 5,000 words, with 300 free words and no card.
What to Check Before You Stay on JustDone AI
$2 Trial, Then $29.99
The $2 trial lasts 7 days. Unless you cancel at least 24 hours before it ends, it renews at $29.99/month. Read that date before you add a card.
24-Hour Cancel Window
Cancellation has to happen at least 24 hours before the trial ends. After that, the $29.99 monthly plan is the price on the terms.
Trustpilot 4.3/5
Trustpilot shows 4.3/5 from about 9,400 reviews. That is a public rating, not a performance score. Price and word limits are the facts to compare.
Experience the Difference - Try SupWriter Now
See how SupWriter turns an AI-assisted draft into writing in your own voice. JustDone AI is a different kind of tool.
Trusted by 9,000+ students, researchers, and content writers worldwide
JustDone's Price: Trial First, Then $29.99
JustDone AI is a writing suite. The offer people notice first is the $2 trial. The terms behind it, checked 2026-09-26, are specific: the trial lasts 7 days, and it renews at $29.99/month unless you cancel at least 24 hours before it ends.
The charge after the trial is $29.99 a month, not the $2.
Trustpilot shows 4.3/5 from about 9,400 reviews. Use that as a public rating, and use the pricing page for the renewal. If you only wanted to try a humanizer, a 7-day paid trial that becomes a $29.99 subscription is a different purchase from a free word allowance.
JustDone also bundles generation, email, and social tools with the humanizer. That bundle is why the monthly price sits above dedicated humanizers listed at $9.99. You are comparing a suite to a single-purpose rewriter, so match the product to the job before you match the logos.
5 Lower-Priced JustDone Alternatives
Each tool below has a lower listed monthly price than JustDone's $29.99 renewal. Figures are list prices and free-tier terms already published for these products. Word caps change, so confirm them on the vendor page.
1. SupWriter — Humanizer with a Clear Free Tier
Price: $9.99/month (Basic) | Free: 300 words, free account, no card | Languages: 50+
SupWriter rewrites an AI-assisted draft so it reads more naturally in your own voice. Basic is 5,000 words a month and 500 words per request. Pro is $19.99/month (15,000 words, 2,000 per request). Ultra is $39.99/month (30,000 words, 5,000 per request). Annual billing is half the monthly price on each plan.
The built-in AI detector returns one score and sentence highlights. It is a pre-check from one model, not the detector your school or client uses. Results vary, and no tool can guarantee a result. The humanizer, paraphraser, and grammar checker require a login.
Against JustDone, the difference you can check is the bill: $9.99/month on Basic versus $29.99/month after JustDone's trial, and a 300-word free tier that does not ask for a card.
2. Undetectable AI — Dedicated Humanizer
Price: from $9.99/month | Free: limited words
Undetectable AI is a humanizer rather than a full writing suite, which is the relevant split with JustDone. The listed starting price matches SupWriter Basic at $9.99/month, about a third of JustDone's $29.99 renewal. Free words are limited; check the current cap before you rely on it.
Longer drafts and higher tiers are a pricing-page question, not something a comparison can promise. If you only need humanizing, this is in the same product category as SupWriter and a different category from JustDone's suite.
3. WriteHuman — Simpler Humanizer
Price: $12/month | Free: limited
WriteHuman is a paste-and-rewrite humanizer at $12/month, still under JustDone's $29.99 renewal (vendor pricing page, checked Sept 2026). The free tier is limited. WriteHuman includes an AI detector (vendor site, checked Sept 2026). Use your school or client's own report if they require one.
4. StealthWriter — Mid-Price Humanizer
Price: $14.99/month | Free: limited
StealthWriter is listed at $14.99/month, under half of JustDone's renewal. The free tier is limited. It is a humanizer with modes aimed at different drafts. Compare the word cap and whether you need a detector in the same product; do not treat a mode name as a result you can count on.
5. Humbot — Humanizer with a Word Trial
Price: $14.99/month | Free: 300 words
Humbot is listed at $14.99/month with a 300-word free trial, so you can read a sample before you subscribe. That monthly price is still below JustDone's $29.99 renewal. As with the others, confirm the current allowance on their site. A free sample tells you how the prose sounds. It does not tell you what another detector will report.
How the JustDone Trial Ends (And What to Switch To)
If you are inside the 7-day trial and do not want the $29.99/month plan, cancel at least 24 hours before the trial ends. That window is the term. After it passes, the renewal price is $29.99/month.
- Note the trial end date when you sign up. The $2 period is 7 days, not an open-ended sample.
- Cancel at least 24 hours before that date if you do not want the $29.99 renewal. Use the cancellation path in your JustDone account, and keep a copy of the confirmation.
- Check the next card statement against that confirmation. If a charge does not match the terms you accepted, take it up with JustDone and your card issuer.
- Compare the next tool on list price before you add another card. Free words and the monthly cap matter more than a slogan.
SupWriter's free tier is 300 words with a free account, and it does not ask for a card. Basic is $9.99/month for 5,000 words. Rewrite your own draft so it reads naturally, then check it with the built-in detector if you want a pre-submit look. That detector is one score, not your school's report.
Looking for more options? We compared grammar tools in our Grammarly alternative breakdown, and our AI humanizer tools for 2026 guide covers the category on features and price.
Related Resources
- Best Grammarly Alternative — For grammar checker users
- Best QuillBot Alternative — For paraphraser users
- Best Undetectable AI Alternative — Humanizer options
- Grammarly vs QuillBot — Which tool should you use?
- Best AI Humanizer Tools (2026) — Features and pricing
Humanize AI Writing in 3 Simple Steps
Turn an AI-assisted draft into clear, natural writing in your own voice, then check it before you submit.
Your Text
Paste your AI-generated text here
Paste Your AI-Generated Text
Copy any content — assignments, blog posts, or AI-generated text.
Result
Check AI Score
See how much of your text is flagged as AI-written by detection systems.
Edit or review selection
Use AI to do more
Humanize & Improve selection
Rewrite the draft so it sounds like you. Select any text to improve it, fix the grammar, shorten it, or lengthen it.
Engineered for
Your Own Voice
SupWriter rewrites sentence structure, rhythm and word choice while keeping your meaning.
Advanced Linguistics
Analyzes syntax, tone, and word patterns to remove robotic footprints.
Smart Restructuring
Restructures sentences while preserving your original meaning and intent.
Adaptive Learning
Updated so you can check a draft before you submit, including for unfair AI-detection false positives.
Ask AI to Fix Selection
Select any text and use AI to improve, fix grammar, shorten, lengthen, or customize with your own prompts.
Check a draft before you submit
Detectors such as GPTZero, Turnitin, and ZeroGPT estimate whether a draft looks AI-written. They can also flag human writing.
SupWriter includes an AI detector so you can check a draft before you submit. It is a pre-check based on one scoring model, not the detector your school or client uses. Results vary by detector, text length and topic, and no tool can guarantee a result. How we test AI detectors
Use the built-in AI detector (free on paid plans) to review a draft before you submit. A score is an estimate, not a guarantee.
Trusted by 9,000+ Writers Worldwide
Students polish their writing to sound more natural, marketers improve content for better engagement and SEO, and businesses send emails that feel personal — not robotic.
Reviews
What our users say
What writers say about SupWriter
I've been using SupWriter for weeks, and it's become essential to my academic writing and research workflow. As a Ph.D. student in environmental law, I'm constantly drafting, refining, and translating complex texts, and SupWriter makes the whole process far more efficient and less stressful.
It's so great and I love this app. Everyone should use it. It helped me pass my essay!
What impressed me most is how seamlessly SupWriter polishes my drafts. My clients noticed the difference in quality and tone immediately.
Absolutely wonderful. The best AI humanizer I've used, especially for scientific writing.
This tool lets me do so many things faster, and its features are genuinely useful.
Really good. I didn't expect it to be this great. It genuinely enhanced my writing. Give it a try.
This product is so good. I'll choose it over and over again. It has my heart. ❤️
The Fix Selection feature is a game changer. I can select any text and improve it, fix the grammar, or make it shorter, and my content workflow has never been faster.
Excellent service, really helpful for job applications, and it even has an AI detector. I'd highly recommend it to students, professors, and writers. An amazing writing tool.
It was amazing. I upgraded, and since then my work has consistently scored high marks.
The best humanizer ever.
It was great, especially in a foreign language. It helped the adjectives come out smoother than I expected!
I'm on the Ultra Monthly plan and bought $20 in extra credits. This platform is super good, and I'm planning to switch to the Yearly plan soon.
Precisely written and a very nice app. I recommend everyone give it a try.
I was amazed to see the AI-flagged text identified so accurately. It really helps crack down on AI interventions.
My professor commended the uniqueness of my essay after I used SupWriter to make it sound natural. Strongly recommended for students!
The website is fantastic. It's clean, modern, and visually appealing. Navigation is intuitive, pages load fast, and everything works well on desktop and mobile. A smooth, enjoyable experience. I'm really impressed!
It's been a great tool to use, and very helpful.
My experience with the AI detector was great. The interface is simple and easy to navigate, and results came back quickly with useful detail.
This experience has been amazing, and the service is extremely helpful.
My experience was amazing. SupWriter is very easy to use, and it actually works!
Impressed by the quality, and cheaper than other platforms.
SupWriter is great. It helps me become a better writer and a better student overall.
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