Simple Memo vs GreenDay
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Simple Memo
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Simple Memo - Checklist is a simple memo app that lets you quickly use both memos and checklists. Write down ideas as they come to you, or manage to-dos and shopping with checklists. With no complicated settings or operations, you can start writing whenever you need to. Use it as a memo pad, to-do list, or shopping list for everything from quick everyday notes to organizing your tasks. 【Main Features】 ・Quickly switch between memos and checklists ・Manage to-dos and shopping with checklists ・Swipe left or right to move between pages ・Create up to 10 pages ・Reorder and delete items ・Rename pages freely
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 in-app purchases: GreenDay at none against Simple Memo's 1. GreenDay also leads on ads (none vs shown) and update cadence (daily vs every 2 months). On price, device support and iOS requirement 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
Both are free to download. Simple Memo sells 1 one-off in-app purchase. GreenDay asks for nothing beyond the download.
Simple Memo ships an update every 2 months, GreenDay daily. The most recent releases landed on October 16, 2026 and October 9, 2026 respectively.
| Parameter | Simple Memo | GreenDay |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Daily — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad | iPhone, iPad, Mac — better |
| Requires iOS | 16.0 | 16.0 |
| Further details — not scored | ||
| Size | 4 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Sota Yamamoto | Kihyuk Hong |
In-app purchases
Simple Memo
- Remove Ads$2.49
GreenDay
No in-app purchases





