HumanPen vs Solvely: a humanizer inside a homework app, or a document workflow
Solvely's AI Humanizer shares one Pro plan with a math solver, an AI detector and a plagiarism checker. HumanPen takes your .docx or .pptx and returns the same file.
Competitor details verified 2026-09-11. Their own site is the authority.
The short answer
Solvely is a homework and math-solving app, and its AI Humanizer is one of several writing tools on the same Pro plan, next to an AI detector, a plagiarism checker and a citation generator. It suits a student who wants the whole kit on one subscription, works from a phone, and only rewrites short passages now and then. HumanPen works on a finished English .docx or .pptx, rewrites inside the file, can follow a Turnitin or iThenticate report, and returns the file.
Side by side
| HumanPen | Solvely | |
|---|---|---|
| Input | Upload the document itself | Paste text; uploading a .pdf, .doc, .docx or .txt file is a Pro feature; no PowerPoint |
| Output | The same file back, still editable | A result panel to review and copy; whether an upload comes back as a file is not stated |
| Per-request word cap | None | Per-request cap not stated; free 500 words a day without an account, Pro "unlimited words" |
| Detection report import | Turnitin / iThenticate, flagged passages only | Not stated |
| Word-count control | Set a target word range; output converges on it, slight drift possible | Not stated |
| Billing | Metered credits, never expire | Weekly, monthly or annual Pro subscription shared by all Solvely study tools ($8.99 a week after a $3.99 first week, $12.99 a month, or $67.99 a year) |
| Adjacent tools | Citation fix, condense, translate | AI detector, plagiarism checker, citation generator, AI paraphraser, AI research, word counter, plus a homework and math solver, flashcards, quizzes, mock exams and live notes |
| Agent / API integration | Skill, MCP, and REST API — callable from AI agents | Not stated (no API or developer docs on its public pages) |
| Rewrite languages | English only | Not stated |
When to pick Solvely
- You want the whole study kit on one plan: homework and math solving, flashcards, quizzes, a plagiarism checker and a citation generator. HumanPen does none of those.
- You want to run a detector first and then rewrite. Solvely's humanizer page suggests exactly that: check your draft with its AI Detector, then humanize the flagged sections. HumanPen has none: you bring a Turnitin or iThenticate report, or pick the passages yourself.
- You only rewrite a few short passages now and then. Its humanizer page offers up to 500 words a day free, with no account and no card.
- You work from your phone. Solvely has a mobile app and a browser extension, and its humanizer page says it also works in mobile browsers.
What it keeps, and what goes in as a file
What Solvely says it keeps is about content: Academic Mode, a Pro feature, preserves your citations, technical terminology and argument structure. The result appears in a panel for you to review and copy, and its page doesn't cover tables, layout or getting a file back. If your paper depends on those, test one file before you subscribe.
Uploading a file is also a Pro feature, and it accepts PDF, DOC, DOCX and TXT, so a slide deck can't go in as a file. HumanPen takes .docx and .pptx (and .txt) but doesn't rewrite PDFs; with a deck it rewrites the text on each slide and is designed to leave layouts, charts and animations untouched. Either way you get back an editable file of the same type, and you can rewrite the whole thing, passages you pick, or what a Turnitin or iThenticate report flagged.
Solvely bills weekly, monthly or yearly, and its terms say fees are non-refundable, including after cancellation, unless stated otherwise at purchase. HumanPen charges credits on the words actually rewritten, and they don't expire. If a recheck still flags something, bring the new report. Eligible passages can be re-run at no charge.
FAQ
Can Solvely humanize a PowerPoint?
Not as a file: its upload takes .pdf, .doc, .docx and .txt, and its pages don't mention PowerPoint. You can paste the slide text into the box instead. HumanPen takes the .pptx and returns an editable .pptx.
Is Solvely's AI Humanizer free?
Partly. Its humanizer page offers up to 500 words a day with no account; document upload, Academic Mode and unlimited words need Pro. The pricing page doesn't list the free 500 words (its free Starter plan there is described in solves), so check what your account shows. HumanPen gives new accounts 100 credits (1,000 words) once.
What does Solvely's Academic Mode keep?
In its own words: "It preserves your citations, technical terminology, and argument structure while making your language sound naturally human." It's a Pro feature. For tables and layout, a test file will tell you more than the page does.
Which one is more effective at lowering AI scores?
We haven't tested the two side by side, so we don't have a number to give you. The most reliable comparison is to run your own file through each one.
Compare the results on your own document
Use your signup credits to try a small selection of paragraphs. Upload a copy, then compare the returned file with the original.
Try it on your document