IWL vs GreenDay
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
IWL
This app is a distraction-free Markdown editor with intelligent writing tools. It offers features like style analysis, goal tracking, and AI-powered editing to help users improve their prose and understand their writing style.
- Distraction-free writing environment
- Style analysis against famous authors
- Writing goal tracking and progress monitoring
- NLP-based word count and statistics
- Readability scores and estimated reading time
- AI-powered editing for grammar and rephrasing
- Word frequency and keyword analysis
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IWL is a beautiful Markdown text editor designed to help you write with focus, powered by a suite of intelligent tools that elevate your writing to a professional level. Whether you’re a novelist, journalist, academic, or creator, IWL gives you more than just a blank page. It gives you insight. It’s the only writing app that helps you understand your writing. # Why Writers Love IWL - Distraction-free by design: A clean, fast editor that lets you think on the page. - Toolbox, not clutter: Open only the tools you need, when you need them. - Smarter than your average text editor: Many tools are powered by natural language models for deep, accurate insights. - Markdown native: No weird formats. Just clean text that goes anywhere. - Offline-friendly: tools work without internet. Your words stay yours. # Writer's Toolbox ## Style Analyzer Find your voice—and who it sounds like. The iconic "I Write Like" style analyzer uses a custom English linguistic fingerprinting model to compare your writing with that of famous authors. It provides a lens into your style, tone, and rhythm. Perfect for learning and sharpening your voice. ## Track Your Writing Goals Set targets and watch your progress. Stay motivated by setting custom word or character goals for your project. IWL tracks your progress in real-time and celebrates with you when you hit your target. Whether you're aiming for a 500-word blog post or a 50,000-word novel, you'll always know exactly how close you are to completion. ## NLP-based Word Count More than just a number. Unlike basic byte-based counters in most text editors, IWL uses a natural language processing (NLP) model to parse text and give you accurate word, sentence, and character stats. Perfect for authors, copywriters, and students who need precision. ## Readability Know how it feels to read. Instantly get readability scores—with estimated reading time and reading level. ## Edit with AI An intelligent editing partner, built right in. Rewrite, rephrase, correct grammar, and polish your prose with our smart AI editor. No chatting—just click and improve. Choose from top AI models from leading developers. (Requires an API key.) ## Word Frequency Find patterns you didn’t know were there. See which words dominate your writing—or which ones you’re underusing. Filter by common or rare words. ## Keywords IWL displays the most semantically important words in your document. Great for SEO, summaries, or finding the hidden themes in your drafts. ## Sentence Rank Spotlight your strongest lines. Using vector analysis, IWL ranks your sentences by informational weight—so you can find the most important lines fast. Ideal for editing, summarizing, or structuring arguments. ## Outline IWL auto-generates outlines from your headings and structure, giving you instant navigation and a birds-eye view of your doc. ## Links Every link, one view. See all your hyperlinks extracted from the document in a single glance. Useful for checking sources, citations, or cleaning up drafts. ## Comments All your side notes in one place. Inline TODOs, comments, and side notes are automatically detected and displayed. Stay organized while staying in the flow. ## Dictionary Know exactly what you mean. Look up word definitions, synonyms, and usage without breaking your writing flow. It’s fast, built-in, and never intrusive. It also shows pictures. ## Read Aloud - Let your writing speak. IWL’s text-to-speech helps you catch awkward phrases and polish your rhythm by hearing your text performed aloud. Choose from a variety of voices. ## Export Beautiful output in every format. Export to PDF, styled HTML, or Word documents with zero formatting headaches. ## Markdown Preview No more guessing what your Markdown will look like. IWL renders your document with elegant typography and layout—automatically. It’s fast, accurate, and great for checking blog posts, docs, and articles.
GreenDay
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Plan the work. Keep the details close. GreenDay brings tasks, calendars, and rich notes together in a focused workspace. A CLEAR PLAN FOR TODAY Use the sun button to choose what to work on. Unfinished tasks stay on Today until you complete or remove them, even when the day changes. Keep a final deadline separate, and use Upcoming to see what's approaching. LISTS FOR PROJECTS, TAGS FOR CONNECTIONS Give each task a home list. Add sublists for courses, projects, or responsibilities; a parent list brings its sublists' tasks together. Use tags to connect topics across projects. Lists and workflow statuses have distinct icons and customizable colors, and the list chooser makes nested projects easy to recognize. LISTS AND BOARDS THAT FIT THE WORK Switch between task lists and kanban boards. Compact cards keep titles and useful details visible. Organize work into statuses, and undo task completion when plans change. NOTES BESIDE EACH TASK Write Markdown, checklists, tables, and links. Add images and documents, or render inline and display LaTeX equations. Select an equation to edit its source. Open checkboxes gathers unfinished checklist items from active tasks so you can find the next small step. CALENDARS ALONGSIDE TASKS Connect calendars already configured in Apple Calendar, including iCloud and Google accounts. View events beside task deadlines in Month, Week, or Day, and link tasks to events without changing their deadlines. Calendar access is optional. YOUR WORKSPACE, WITH BUILT-IN SYNC Use GreenDay locally without an account. Create an account to import your existing tasks, notes, lists, tags, and attachments into GreenDay Cloud and sync across devices. Signing into an existing account opens its cloud workspace and replaces visible guest tasks without merging them. Changes save locally first, so you can keep working offline. GreenDay syncs changes in the background while the app is open. Existing private workspaces reopen in place after an update; older workspace folders are copied into private local storage with the originals preserved. Custom cloud-drive and shared-folder selection are no longer available. No advertising or analytics SDK is included. Account and sync data are processed by GreenDay’s service on Google Cloud; the privacy policy explains collection and deletion.
Screenshots
Verdict
The clearest difference is price: GreenDay at Free against IWL's $29.99. GreenDay also leads on update cadence (daily vs fortnightly) and iOS requirement (16.0 vs 18.0). On ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
GreenDay is free to download; IWL costs $29.99 up front. Neither carries in-app purchases, so what you see is what you pay.
IWL ships an update fortnightly, GreenDay daily. The most recent releases landed on October 24, 2026 and October 9, 2026 respectively.
| Parameter | IWL | GreenDay |
|---|---|---|
| Price | $29.99 | Free — better |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Fortnightly | Daily — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, Mac | iPhone, iPad, Mac |
| Requires iOS | 18.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 27 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Koding Robots doo | Kihyuk Hong |
In-app purchases
IWL
No in-app purchases
GreenDay
No in-app purchases









