Comparison

SlipBox vs Day

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

Head to head
About

SlipBox

This app helps you build a structured web of knowledge using the Zettelkasten method. Its minimalist design and continuous scrolling interface encourage active recall and pattern recognition for deep cognitive work. Your notes are stored locally for privacy.

Highlights
  • Continuous scroll interface
  • Zettelkasten method implementation
  • Intentional tagging system
  • Minimalist design
  • Privacy-first, local storage
Features
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Stop burying your ideas in digital graveyards and start building a structured web of knowledge with the original Zettelkasten method. SlipBox is a minimalist note-taking tool designed for those who value intentionality over automation. By digitizing Niklas Luhmann’s legendary paper-and-pen system, SlipBox replaces complex folders and confusing backlinks with a unique, continuous scrolling interface. This design forces you to physically move through your ideas, facilitating the active recall and spontaneous pattern recognition necessary for deep cognitive work. Key Features for Your Second Brain: Continuous Scroll Interface View your notes in a single, fluid stream to rediscover forgotten insights and spark new ideas. The Luhmann Workflow A digital implementation of the Zettelkasten method that respects the principle of atomicity (one idea per card). Intentional Tagging Organize notes manually to build deep mental maps and avoid the "out of sight, out of mind" trap of folders. Minimalist Design No steep learning curves or bloated features, just you and your knowledge. Privacy-First & Local Your data stays on your device, ensuring your private thoughts remain truly private. Build a knowledge system that grows with you. Turn your fleeting notes into a structured, permanent repository of thought with SlipBox.

About

Day

Features
Read full description

Day In — the kindest way to look back on your day, all in one. Habit tracking, to-dos, daily reflection (mood logging), the Eisenhower Matrix, a calendar, and even lock screen wallpapers. Plan, do, and reflect on today — all in Day In, without hopping between apps. ● Lock Screen Wallpaper Studio Set your own photo or a soft gradient as the background, then drag to-dos, habits, events, and calendar elements wherever you like. Resize by the corners and tune text color, size, and opacity. With a Shortcut, a fresh wallpaper reflecting today's to-dos and habits can apply every morning. ● Daily Reflection & Emotion Dot Grid Capture your day in one sentence and log your mood on a 5-level scale, from tough to great. The emotion dot grid — a year of moods filling in as dots of color — is Day In's signature. Tap a past dot to reopen that day's reflection and habits; saving a reflection fills the dot with a little reward. ● Eisenhower Matrix Organize to-dos and habits across four quadrants of urgency and importance. Drag items between quadrants and priorities reorganize instantly. Add and check off items in each quadrant; your arrangement is saved. View as a 2×2 grid or a list. ● Building Habits Create habits that repeat daily, on weekdays/weekends, or on the days you choose. Pick an icon and color, add a duration and notes, and set a reminder. Streaks and a grass graph show how long you've kept it up, and you can leave a one-line note per habit. ● To-Do Management Quickly add the day's to-dos and check them off with a tap. Long-press to delete, and see today's completion rate at a glance with a progress ring. ● Calendar Manage your schedule in a monthly view that pulls in your iOS Calendar events and holidays. Set title, time, place, notes, alerts, and repeats — event alerts arrive via iOS Calendar. Drag an event to another date and Undo to revert. Each day's mood, reflection, and habits appear on the date, so a tap reopens your day. ● Widgets Add widgets to your home and lock screens. The "Today" widget shows completed habits and to-dos, your progress, and what's next. The Pro-only "Emotion Grid" widget shows your recent mood flow as dots of color. Widgets refresh automatically. ● Notifications Get an evening reflection reminder at the time and on the days you choose, coming through even in Focus mode. Set a time for each habit, too; tapping a notification takes you straight to logging. ● iCloud Sync Everything is stored safely on your device and, when signed in to iCloud, backed up and synced automatically. Changes on another device with the same Apple Account appear automatically. Your records are never sent to our own servers. ● Themes Choose Light, Dark, or System and apply it across the app instantly. Pick habit icons from hundreds of emoji, painted with 8 suggested colors or one you tune yourself. ● Day In Pro Upgrade to Pro for unlimited habits, the Pro-only emotion grid widget, and detailed insights like yearly emotion analysis, weekday patterns, and habit streaks. Try Pro free for 7 days and cancel anytime. Restore Purchase carries Pro across devices. ● Key Features - One-line reflection with 5-level mood logging - Emotion dot grid — a year of moods in color - Eisenhower Matrix by urgency and importance - Daily and day-of-week habits with streaks and a grass graph - Simple to-dos — tap to complete, long-press to delete - Monthly calendar + iOS Calendar and holiday integration - Add, edit, delete events, with drag-to-move and Undo - "Today" and Pro-only "Emotion Grid" widgets - Lock Screen Studio over your photo or gradient - Evening reflection and habit reminders on your schedule - Automatic iCloud backup and multi-device sync ----------------------------------------------------------------------------------------------- Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://dam-dam-studio.vercel.app/apps/dayin/privacy

Screenshots

SlipBox4 screens
Day4 screens

Verdict

The call

The clearest difference is price: Day at Free against SlipBox's $0.99. Day also leads on update cadence (every 3 days vs every 3 weeks). SlipBox's advantage is in-app purchases (none vs 3) and ads (none vs shown). On 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

CostPrice · In-app purchases · Ads · Monetization

Day is free to download; SlipBox costs $0.99 up front. Day sells 3 in-app purchases, starting at $0.99 per month. SlipBox asks for nothing beyond the download.

UpkeepUpdate frequency

SlipBox ships an update every 3 weeks, Day every 3 days. The most recent releases landed on September 19, 2026 and September 9, 2026 respectively.

Scorecard5 real differences · 6 level
SlipBox versus Day: the parameters behind the verdict, then further details
ParameterSlipBoxDay
Price$0.99Free — better
Rating3.3 (3 ratings) — better—
Positive reviews87.5% of reviews—
Number of ratings3 — better—
Update frequencyEvery 3 weeksEvery 3 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationPaid—
Best chart rank#188 — better—
DevicesiPhone, iPad — betteriPhone
Requires iOS18.217.0 — better
Further details — not scored
Size8 MB38 MB
Age rating4+4+
DeveloperOzlem AKBUDAKJinBae Jung

In-app purchases

None

SlipBox

No in-app purchases

3 purchases

Day

Subscriptions2
  • Day In Pro 월간7 Days trial$0.991 Month
  • Day In Pro 연간7 Days trial$6.991 Year
One-time1
  • Day In Pro 평생$11.99

Questions

Is SlipBox free?
SlipBox costs $0.99, with no in-app purchases.
Is Day free?
Day is free to download, with in-app purchases available.
Do SlipBox or Day have ads?
Day shows ads; SlipBox does not.
Which is updated more often, SlipBox or Day?
SlipBox ships an update every 3 weeks, and Day every 3 days. Most recently, SlipBox was updated on September 19, 2026 and Day on September 9, 2026.

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