Gridpaper vs OpenRead
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Gridpaper
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Gridpaper doesn't draw the picture for you. It just makes a blank page easier to start. Gridpaper brings your to-dos, events, yearly goals, and a diary you can decorate into one place. β Fill in your day, one square at a time Move between Day and Week as you write. Tag a to-do and it joins that tag's own section, marked with a small patch of color. Check something off to fill its square in. Nothing disappears β the line just moves down the list. Press and hold a to-do to move it to tomorrow, repeat it tomorrow, or send it to another date. β Turn repeats into routines Set a to-do to come back daily, on certain weekdays, or on whatever schedule suits it. Skip a single day when you need to, and the rule stays as it is. β A whole month on a single page Keep events and diary entries together on the calendar. If you like, days you finished your list can keep a small mark β in a color you choose. β A diary you can decorate Add photos, tilt them, and trim them into the shape you want. Lay text and stickers on top to make the page your own. Every entry you write sits as a small thumbnail on its day in the calendar. β Count your year in squares Set a yearly goal and break it into milestones β or into a count, like 24 books, with a grid you fill one cell at a time. Send a milestone to your to-do list whenever you're ready to work on it. β Paper and ink Clay-white paper, ink-dark text. Ink is the only color the app puts down on its own β the rest is yours to add. Ten traditional Korean colors, drawn from dancheong painting and jogakbo patchwork, color your tags and goals. β Where your writing lives Everything stays on your device and in your own iCloud. Nothing is sent to a developer's server, and the person who made this app cannot read it. Your records show up on every device signed in to the same Apple Account. β Two languages Gridpaper is written in Korean and English. If your device is in one language but you'd rather read the app in the other, you can set the app's language on its own.
OpenRead
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Find your documents and focus on reading. OpenRead brings PDFs, documents, presentations, and spreadsheets into one on-device library. CONNECT A FOLDER ONCE Choose a folder in the Files picker. OpenRead finds supported documents in that folder and its subfolders. Add or disconnect folders whenever you need to. On iOS, access is limited to locations you select and allow. FIND THE RIGHT FILE Filter by file type, search file names, and sort by recent files or name. Open a document directly from the list. READ IN A VIEW THAT FITS Zoom and navigate PDF pages. Read HWP, HWPX, DOC, and DOCX content in a mobile reading layout. Move through PPTX slides and explore XLS, XLSX, and CSV sheets. Saved reading positions help you pick up where you left off. MAKE TEXT COMFORTABLE Adjust body text in the text reader. A separate slider in the More menu changes interface text size in the library, menu, and information pages. KEEP DOCUMENTS ON YOUR DEVICE No account or sign-in is required. OpenRead does not upload your documents or use remote conversion. Downloaded documents can be read offline. Original copies, parsed data, and reading positions stay on your device. Cloud-only files must be downloaded first. SUPPORTED FORMATS PDF, HWP, HWPX, DOC, DOCX, PPTX, XLS, XLSX, CSV, TXT, Markdown, EPUB, ODT, and RTF. Legacy PPT files are unsupported; convert them to PPTX or PDF. Password-protected documents, complex formatting, macros, and embedded objects may have limited support. Rendering depends on document structure and device capabilities. Reading features have no ads, in-app purchases, subscriptions, or app-imposed document-count limit. Terms, privacy information, and help are available in the More menu. Support: david.hwang@kakao.com
Screenshots
Verdict
The clearest difference is update cadence: OpenRead at every 2 days against Gridpaper's fortnightly. OpenRead also leads on device support (3 vs 1) and iOS requirement (15.1 vs 18.0). On price, ads and in-app purchases there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Gridpaper ships an update fortnightly, OpenRead every 2 days. The most recent releases landed on October 12, 2026 and October 19, 2026 respectively.
| Parameter | Gridpaper | OpenRead |
|---|---|---|
| Price | Free | Free |
| Update frequency | Fortnightly | Every 2 days β better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone | iPhone, iPad, iPod β better |
| Requires iOS | 18.0 | 15.1 β better |
| Further details β not scored | ||
| Size | 7 MB | 43 MB |
| Age rating | 4+ | 4+ |
| Developer | IEUMGYEOL | KyoungChan Hwang |
In-app purchases
Gridpaper
No in-app purchases
OpenRead
No in-app purchases





