> Markdown version of https://www.gateonai.com/compare/humanpen/calmly-writer (same content and live data as the page). > HumanPen (Free + Paid plans, 60/100) vs Calmly Writer (Free, 68/100). Calmly Writer scores higher on GateOnAI - see why. [Home](https://www.gateonai.com/) > [Compare](https://www.gateonai.com/compare) > HumanPen vs Calmly Writer # HumanPen vs Calmly Writer - AI Tool Comparison 2026 Data updated: 3 November 2026 (latest change to a listed tool; GateOnAI Scores are recomputed nightly) In-depth comparison of HumanPen and Calmly Writer. Compare features, pricing, use cases, and find the best AI tool for your needs. ## [HumanPen](https://www.gateonai.com/tools/humanpen) AI writing that still sounds human — humanizer & detector for students and writers. **Category:** Writing Assistant **Pricing:** Free + Paid plans **Best for:** Writing Assistant [View HumanPen](https://www.gateonai.com/tools/humanpen) ## [Calmly Writer](https://www.gateonai.com/tools/calmly-writer) Distraction-free AI writing environment **Category:** Writing Assistant **Pricing:** Free **Best for:** Writing Assistant [View Calmly Writer](https://www.gateonai.com/tools/calmly-writer) ## Side-by-Side Comparison | Feature | HumanPen | Calmly Writer | |---|---|---| | **Pricing** | Free + Paid plans | Free | | **Category** | Writing Assistant | Writing Assistant | | **Best For** | Writing Assistant | Writing Assistant | | **GateOnAI Score** | 60/100 | 68/100 | | **Website** | HumanPen | Calmly Writer | ## Frequently Asked Questions ### What is HumanPen? HumanPen is a document‑level AI humanizer that rewrites AI‑generated text while preserving the original layout, citations, numbers, formulas and terminology. Users can upload DOCX, PPTX or TXT files of any length, then either select passages manually or import a Turnitin or iThenticate detection report to target only flagged sections. Rewrites are charged per word actually changed, with 100 free credits for new users and free rewrites until the AI similarity score drops below 20%. The tool returns the file with its original styling intact and also offers an API that can be called with a single line of code for integration into custom workflows. GateOnAI Score: 60/100. ### What is Calmly Writer? Calmly Writer is a minimalist, distraction‑free writing app that keeps the focus on your story with a simple, unobtrusive interface. It offers a WYSIWYG markdown editor so headings, tables and lists appear as they will in the final document, eliminating the need to read raw syntax. The app includes typewriter sounds, smart punctuation, customizable caret, full‑screen mode and several color themes, plus a toolbar that appears when you select text. Built for serious writers, it provides word and character counts, custom targets, reading time, a table of contents, comments, tabbed documents, permanent autosave and backups. One pay‑once license covers Windows, Mac and Linux, with a separate Android app available, and it exports to Word, PDF, Markdown or HTML while supporting spell‑check, right‑to‑left text and an Open Dyslexic mode. GateOnAI Score: 68/100. ### What is the difference between HumanPen and Calmly Writer? HumanPen is best for Writing Assistant. Calmly Writer is designed for Writing Assistant. HumanPen strengths: Free plan available to get started; The provider's privacy page refers to the GDPR; Online at our latest daily check. Calmly Writer strengths: Listed as free to use; Online at our latest daily check. ### Which is better: HumanPen or Calmly Writer? GateOnAI rates HumanPen 60/100 and Calmly Writer 68/100. HumanPen is tagged for Writing Assistant. Calmly Writer is tagged for Writing Assistant. Choose HumanPen if you need Free plan available to get started. Choose Calmly Writer if you need Listed as free to use. ### Is HumanPen free? HumanPen offers Free + Paid plans pricing. Get started for free. ### Is Calmly Writer free? Calmly Writer offers Free pricing. Get started for free. ### What are the pros and cons of HumanPen vs Calmly Writer? HumanPen pros: Free plan available to get started; The provider's privacy page refers to the GDPR; Online at our latest daily check. Main limitation: Some features need a paid plan. Calmly Writer pros: Listed as free to use; Online at our latest daily check. Main limitation: No limitations recorded on GateOnAI. [Compare more AI tools](https://www.gateonai.com/compare) | [Browse all 3164 AI tools](https://www.gateonai.com/browse) --- Source: https://www.gateonai.com/compare/humanpen/calmly-writer - GateOnAI. Product names and trademarks belong to their owners; provider statements are the providers' own words.