Comparison

Sparky vs GreenDay

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Sparky

Features
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Great ideas deserve more than a fleeting thought. Sparky helps you capture, organize, and develop your ideas so nothing gets lost. KEY FEATURES - Instant Capture: Jot down an idea in seconds with just a title. Add details later when you're ready. - 4-Stage Workflow: Move ideas through Inbox, Exploring, Planned, and Archived stages to track their progress from spark to action. - Smart Tags: Organize ideas with custom tags and filter instantly to find exactly what you need. - Rich Details: Add summaries, detailed notes, and tags to flesh out every idea. - Quick Actions: Swipe to favorite, archive, or delete ideas without breaking your flow. - Powerful Search: Find any idea instantly with full-text search and flexible sorting options. - Beautiful Design: A modern glass morphism interface designed for iOS 26 that makes managing ideas a pleasure. Whether you're an entrepreneur brainstorming your next venture, a creative professional collecting inspiration, or anyone who wants to turn fleeting thoughts into actionable plans — Sparky is your personal idea companion. Download Sparky and never let a great idea slip away.

About

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

Sparky4 screens
GreenDay2 screens

Verdict

The call

The clearest difference is ads: GreenDay at none against Sparky's shown. GreenDay also leads on update cadence (daily vs every 2 days) and device support (3 vs 1). On price and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Sparky ships an update every 2 days, GreenDay daily. Both last shipped on October 9, 2026.

Scorecard4 real differences · 2 level
Sparky versus GreenDay: the parameters behind the verdict, then further details
ParameterSparkyGreenDay
PriceFreeFree
Update frequencyEvery 2 daysDaily — better
AdsYesNo — better
In-app purchasesNoNo
DevicesiPhoneiPhone, iPad, Mac — better
Requires iOS18.016.0 — better
Further details — not scored
Size7 MB6 MB
Age rating4+4+
DeveloperYongJae KimKihyuk Hong

In-app purchases

None

Sparky

No in-app purchases

None

GreenDay

No in-app purchases

Questions

Is Sparky free?
Sparky is free to download, with no in-app purchases.
Is GreenDay free?
GreenDay is free to download, with no in-app purchases.
Do Sparky or GreenDay have ads?
Sparky shows ads; GreenDay does not.
Which is updated more often, Sparky or GreenDay?
Sparky ships an update every 2 days, and GreenDay daily. Most recently, Sparky was updated on October 9, 2026 and GreenDay on October 9, 2026.

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