AI draft
This report serves as a comprehensive overview of our spring survey. Notably, satisfaction rose to 87%, underscoring the crucial role of speed, as response time fell from 9 hours to 4.
HumanGPT vs Clever AI Humanizer: a free web tool and an iPhone app compared
Clever AI Humanizer is a free web tool from CleverFiles Inc. that "improves tone, sentence structure, clarity, and readability" in AI-assisted drafts, with a free AI detector alongside.1 HumanGPT is an iPhone app that rewrites AI drafts so they sound like you, keeps your facts and citations, and shows an AI-likeness estimate for every sentence. Here's how they compare, with sources.
The short verdict
Both rewrite AI drafts. Clever is free and runs in a browser; HumanGPT is an iPhone app with more settings.
Choose HumanGPT if…
- You write on an iPhone and want to scan a page or import a Google Doc or web link.
- Figures and references need checking after the rewrite.
- You want five tones, a strength setting and, on Pro, your own voice.
HumanGPT vs Clever AI Humanizer at a glance
The main differences side by side. Small numbers link to the sources below.
| Feature | HumanGPT | Clever AI Humanizer |
|---|---|---|
| Platforms | iPhone app (iOS 17 or later). A web editor is planned but not live yet. | Web app with no signup, plus free website widgets; API coming soon.13 No mobile app linked from its site. |
| Free plan | Yes 1 free demo rewrite, then 300 words a day, up to 300 words per rewrite. | Yes Everything is free, with no ads or paywall, "subject to service availability".1 |
| Paid pricing | Pro: $5.99 a week with a 3-day free trial, or $39.99 a year (US prices).7 | None. CleverFiles says it often adds paid features one to two years after launch.1 |
| Word limits | Free: 300 words a day. Pro: 50,000 words a week (fair use), up to 3,000 words per rewrite. | Up to 3,000 words per request, no fixed monthly allowance; the terms say limits may change.14 |
| Rewriting approach | Anthropic Claude models guided by the open-source humanizer skill (26 patterns from Wikipedia's "Signs of AI writing"). Tones, strength, text types; voice matching and sentence rewrite on Pro. | Two styles, Normal and Clear & Structured, plus a "Show changes" view. Says its model was trained on human-written texts; AI providers not named.15 |
| AI-likeness or detection | Yes Built-in AI-likeness estimate with per-sentence highlights. An estimate, not proof of authorship. | Yes Separate free detector: 80 to 10,000 words per check, unlimited runs, sentence-level signals.2 |
| Facts and citations kept | Yes Integrity check for facts, numbers and citations, plus a fact-check pass when needed. | Says the meaning "stays absolutely the same".1 Its Ethics Statement adds that it can't fact-check: "That part stays with you."6 |
| Document import and export | Import .txt, photos and scans (on-device OCR), Google Docs and web links; PDF and Word on Pro. Export .txt, .docx, .pdf. | Partly Free upload of .pdf, .doc, .docx, .txt and .md; output copied as text. No file export shown.1 |
| Languages | App in English, German, Spanish and French. | Humanizer: English, Spanish, Portuguese. Detector and site: English, Spanish.12 |
| Privacy and data retention | Processed in the EU (Firebase europe-west1) and by Replicate (Anthropic Claude, US) only to produce results. Results kept 30 days; uploads deleted after extraction. No training, no ads.8 | Deleted 30 days after submission; no training. Staff may read submissions for quality checks. US and EU hosting.5 |
| Notable claims | Doesn't promise undetectable text or a pass on any detector or exam. | Says its detector ranked #1 on the GEDE benchmark (not verified by us) and its humanizer is "not designed to bypass AI detection systems".26 |
- Yes listed by the provider
- Partly some of it, or only on some plans
- No the provider says it isn't offered
- Not stated not in the sources we checked
Where Clever AI Humanizer is stronger
Good reasons to pick Clever instead:
-
Free, with no monthly cap
There's no fixed monthly word allowance, and each request can be up to 3,000 words, as long as there's capacity that day.1 HumanGPT's free plan gives you 300 words a day, up to 300 per rewrite.
-
In a browser, no account
You can paste text on cleverhumanizer.ai from a laptop without signing up.1 HumanGPT is iPhone-only for now, and its web editor isn't live yet.
-
Free PDF and Word uploads
The upload button takes .pdf, .doc, .docx, .txt and .md files at no cost.1 In HumanGPT, PDF and Word import are part of Pro.
-
A free detector for long texts
Clever AI Detector checks up to 10,000 words at a time, as often as you like.2 Site owners can also embed free detector and humanizer widgets.3
Where HumanGPT is different
We didn't find these features described in Clever AI Humanizer's sources.
-
A check on facts and citations
Every rewrite gets an integrity check on facts, numbers and citations, and texts with figures, names or citations get a separate fact-check pass.
-
Five tones and your own voice
Choose natural, casual, professional, academic or friendly, set the strength and pick a text type. On Pro, voice matching follows a writing sample of yours, and you can redo a single sentence.
-
Scan, link and export
Import a photo or scan (text recognition runs on your iPhone), a Google Doc or a web link. Export the result as .txt, .docx or .pdf.
How the rewriting differs
HumanGPT rewrites with Anthropic Claude models working from the open-source humanizer skill, which covers 26 habits of AI text from Wikipedia's "Signs of AI writing", such as stock words and stacked qualifiers.910
Clever describes itself as a writing editor that removes flat tone and repetitive structure while the meaning "remains untouched", and it asks you to review the result because "results vary by text".1
Example rewrite
Tone: professionalThis report sums up our spring survey. Satisfaction rose to 87%, and response time fell from 9 hours to 4.
Fixed
- "Serves as" for "is"
- Shallow -ing add-ons
- Overused AI words
Kept
- 87%
- 9 hours to 4
Sample text and rewrite written for this page to show typical edits. Results depend on your text and settings. We don't show Clever AI Humanizer output, because a single sample can't fairly represent another tool.
Pricing compared
Clever has one plan, and it's free.1 HumanGPT adds Pro, billed weekly or yearly; $5.99 a week is about $26 a month.
HumanGPT
- Free
- $01 free demo rewrite, then 300 words a day, up to 300 per rewrite
- Pro weekly
- $5.99 / week3-day free trial. 50,000 words a week (fair use), up to 3,000 per rewrite
- Pro yearly
- $39.99 / yearSame Pro limits
US prices.7
Clever AI Humanizer
- Free
- $0No fixed monthly allowance, up to 3,000 words per request
- Paid plans
- NoneThe terms say limits may change
Prices in US dollars as listed in October 2026, before tax. Prices in your country may differ, and either provider can change them at any time.
Questions about HumanGPT and Clever AI Humanizer
Is HumanGPT an alternative to Clever AI Humanizer?
It can be, if you write on an iPhone and want more control: HumanGPT adds five tones, voice matching on Pro and a check on facts and citations. If you want a free browser tool, Clever AI Humanizer may suit you better, because the HumanGPT web editor isn't live yet.
Can HumanGPT promise my text won't be flagged as AI?
No. No tool can promise how a detector, a teacher or an editor will judge a text, and HumanGPT doesn't try to. It shows an AI-likeness estimate, which is an estimate and not a verdict. Follow the rules of your school or workplace.
Is Clever AI Humanizer free, and what does HumanGPT cost?
Clever AI Humanizer is free as of October 2026, though its terms say limits may change. HumanGPT is free for 300 words a day, and Pro costs $5.99 a week with a 3-day free trial or $39.99 a year in the US. Prices change, so check both before you buy.
Who can read the text I submit?
HumanGPT's privacy policy says we don't read your text unless you send it to us for support or we have to investigate a specific abuse case. Clever's privacy policy says its staff may read submissions for quality checks. Neither uses your text to train AI models.
Sources
All sources were last checked in October 2026.
- Clever AI Humanizer home page (opens in a new tab)
- Clever AI Detector (opens in a new tab)
- Clever API and widgets (opens in a new tab)
- Clever AI Humanizer terms of service (version 2.1) (opens in a new tab)
- Clever AI Humanizer privacy policy (version 2.1, effective September 30, 2026) (opens in a new tab)
- Clever AI Humanizer Ethics Statement (opens in a new tab)
- HumanGPT pricing
- HumanGPT privacy policy
- humanizer, an open-source skill by Siqi Chen (MIT License) (opens in a new tab)
- Wikipedia: Signs of AI writing (opens in a new tab)
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Try HumanGPT on your next draft
Paste a paragraph, pick a tone and check the AI-likeness estimate. Your first rewrite is free.
For iPhone with iOS 17 or later.