Comparison

FlowSpace vs KKUK

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

Head to head
About

FlowSpace

This app combines tasks, events, notes, and habits into a single, fluid interface for enhanced focus and organization. It offers unique timeline and context-based views to manage your day and projects efficiently, all while prioritizing privacy and a minimalist design.

Highlights
  • Integrated timeline for events and tasks
  • Context-based organization with 'Spaces'
  • Habit tracking with streak support
  • Rich text notes linked to projects
  • Full calendar integration
  • Offline-first architecture
  • Zero ads and tracking
Read full description

Reclaim your focus with FlowSpace. Most productivity apps add to the noise. FlowSpace clears it. We have reimagined organization by merging your tasks, events, notes, and habits into a single, fluid experience designed for clarity. Whether you are managing complex projects, tracking daily habits, or simply trying to organize your day, FlowSpace adapts to your mind. WHY FLOWSPACE? The app is structured around two unique views: ◉ FLOW: YOUR INTELLIGENT TIMELINE Forget static lists. Visualize your day with a vertical timeline that integrates your calendar events alongside your to-dos. • See gaps in your schedule instantly. • Switch from a focused Day View to a broader Month View with a simple gesture. ◉ SPACE: ORGANIZE BY CONTEXT Work, Personal, Studies, or Side Projects—keep them distinct yet accessible. • Create dedicated "Space" folders for every area of your life. • Use "Quick Access" to surface overdue items, high-priority tasks, and recent notes instantly. • Keep your mental load light by seeing only what matters right now. ——————————————————————— ◉ THE ALL-IN-ONE PRODUCTIVITY SUITE Stop switching between four different apps. FlowSpace integrates all the tools you need: • TASKS: Smart reminders with subtasks and priorities. • HABITS: Built-in streak tracking to build better routines. • NOTES: Rich text editing linked directly to your projects. • EVENTS: Full calendar integration. ◉ PRIVACY FIRST & DESIGN CENTRIC • Zero Ads. Zero Tracking. Your data is yours. • Offline-first architecture for lightning-fast performance. • Secure iCloud Synchronization (FlowSpace Pro) to keep your devices in harmony. • Stunning Dark Mode and minimalist aesthetic. Make organization a seamless part of your life, not a chore. Download FlowSpace today and experience true clarity. --- Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

KKUK

Track your habits by stamping them on a calendar. This app allows you to create custom stamps with colors and emojis, and view your progress through various reports. It offers lock screen and widget integration for easy access.

Highlights
  • Stamp habits on a calendar
  • Customizable stamps with colors and emojis
  • Lock screen and widget integration
  • Journal entries with photos and notes
  • Weekly, monthly, and yearly reports
  • CSV export of reports
  • Home screen widgets
Features
Read full description

A to-do list erases what you finish. KKUK does the opposite — every day you follow through leaves one more stamp. Press one stamp today. Then watch them stack up on the calendar. ■ Press it without opening the app Open the app once and today's board appears on the Lock Screen and in the Dynamic Island. For a while after that you can press a stamp right there, without going back to the app. You can also press one from a Home Screen widget. ■ A press, not a tap One quick tap won't do it. Hold your finger until the ink fills all the way, and the stamp lands. Slide your finger aside to cancel a press you didn't mean. ■ Make your own stamp Build a stamp from 16 colors and an emoji. Which weekdays, how many times a day, which group it belongs to, and when it should remind you — set all of it per stamp. ■ See what you've kept · Calendar — every stamp you pressed this month on a single board. · Journal — leave a note and a photo beside the stamp. · Report — see how well you kept up by week, by month, and by year. The period you're looking at can be exported as a CSV file. · Monthly review — look back on the month that just ended. ■ Seven Home Screen widgets Today's Stamps · Recent check-ins · Calendar · Weekly report · Monthly report · Group weekly · Large calendar. Pick any size and keep it on your Home Screen. ■ Make it yours Twenty bundled typefaces — four drawn for Latin text, sixteen Korean. Light, dark, or follow your device. Portrait only. ■ Free to use 3 stamps, 3 groups, the last 30 days of records, this week's and this month's report, and the Today's Stamps widget. Watch a rewarded ad all the way through to add one more stamp, and the slot you earned stays yours. ■ KKUK Premium unlocks · Unlimited stamps and groups · Every record, including anything older than 30 days · Past reports and past monthly reviews · All seven widgets · iCloud sync to continue on another device · No ads ■ Subscription details · KKUK Premium Monthly — $1.99 / month · KKUK Premium Yearly — $12.99 / year Subscriptions renew automatically. Unless canceled at least 24 hours before the current period ends, a subscription renews at the same price, and payment is charged to your Apple Account at confirmation of purchase. You can manage or cancel subscriptions in Settings > Apple Account > Subscriptions on your device. Terms of Use https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy https://kkuk-app.web.app/en/privacy/ ■ Your records stay on your device Stamps, notes, and photos are stored on your device. There is no account and no sign-in. iCloud sync is off by default, and when you turn it on, records are copied only to your own private iCloud database. The developer cannot read them and does not keep them on a separate server.

Screenshots

FlowSpace4 screens
KKUK4 screens

Verdict

The call

The clearest difference is ads: FlowSpace at none against KKUK's shown. KKUK's advantage is update cadence (every 5 days vs every 2 months). On price, in-app purchases, monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. FlowSpace sells 3 in-app purchases, starting at $2.99 per month and KKUK sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

FlowSpace ships an update every 2 months, KKUK every 5 days. The most recent releases landed on October 8, 2026 and October 25, 2026 respectively.

Scorecard2 real differences · 8 level
FlowSpace versus KKUK: the parameters behind the verdict, then further details
ParameterFlowSpaceKKUK
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews—100.0% of reviews
Number of ratings1 — better—
Update frequencyEvery 2 monthsEvery 5 days — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhoneiPhone, Apple Watch — better
Requires iOS18.018.0
Further details — not scored
Size25 MB82 MB
Age rating4+4+
DeveloperDorian HellSangcheol Kim

Customer experience

FlowSpace

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

KKUK

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

FlowSpace

Subscriptions2
  • Monthly$2.991 Month
  • Yearly$12.991 Year
One-time1
  • Lifetime$34.99
2 purchases

KKUK

Subscriptions2
  • KKUK Premium Monthly$1.991 Month
  • KKUK Premium Yearly$12.991 Year

Questions

Is FlowSpace free?
FlowSpace is free to download, with in-app purchases available.
Is KKUK free?
KKUK is free to download, with in-app purchases available.
Do FlowSpace or KKUK have ads?
KKUK shows ads; FlowSpace does not.
Which is updated more often, FlowSpace or KKUK?
FlowSpace ships an update every 2 months, and KKUK every 5 days. Most recently, FlowSpace was updated on October 8, 2026 and KKUK on October 25, 2026.

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