Comparison

Kase₄ vs Calendar Notes Pro

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

Head to head
About

Kase₄

This app allows you to create and manage your own personal databases on your device. It offers flexibility in designing structures to track anything important, with features like inter-linked data, full-text search, and various field types. Your data remains private and accessible offline.

Highlights
  • Design custom databases
  • Inter-linked data
  • Full-text search with NLP
  • Multiple field types
  • Markdown support
  • Passcode and biometric lock
  • Data visualization (Formatters)
  • OCR for text recognition
Features
Read full description

Kase exists because it should. There should be a database app that can go anywhere with you. It should be: • Simple — Using it should be easy and intuitive, • Flexible — Once familiar with the basics, you can design any database to track anything important to you, and • Relational — Inter-linked data is an order of magnitude more useful. Plus, you don't want to repeat yourself. Additionally, it should be: • Personal — You should not need to worry about who can peek into your data, and • Always Available — High-speed wireless network should *not* be a prerequisite for accessing your own data. Structured data at your fingertips. Something like that didn't exist, so I started creating Kase in 2014. Basic Concepts: • Your Kase contains Boxes. • Each Box stores Decks that can relate to each other. • A Deck collects similarly structured Cards. • And a Card is where you put data Entries. Features: • Pick, assign, and organize with Categories, Tags, and Marks. • Search by name, notes, full text, or keywords: Full-text indexing with Natural Language Processing. • Highlight any Box, Deck, Card, Entry, or Keyword. • Deck definitions support inheritance! • Field types include Text, Number (with Unit), Money (with Currency), Date/Time (with Time Zone), Choice, Boolean, Link, Picture, and Document. - complete with multi-level auto-conversion • Write in Markdown and see rich formatted text. • Box can be locked with a passcode, and unlocked with Face ID or Touch ID. • Formatters (Fx) to visualize data in different ways without altering the data one bit. e.g. Unit Converter, NameMapper, WordScrambler, ICU Transformers... • Side-by-Side: Compare Cards easily by displaying in columns. • On-device Text Recognitions (OCR) for multiple languages. • Import/Export in CSV, JSON, or KASE. • Complete Backup & Restore. • iPad Multitasking support: Split View, Slide Over, etc. • Very customizable UI with custom locales What Kase Can't Do: - Cloud sync is not done yet (stay tuned...) What Kase Can Do: > From Data to Wisdom > Data ▹ Information ▹ Knowledge ▹ Wisdom 1. Store Data — the objective truths. 2. Organize Information — to reflect circumstances and current condition. 3. Systematically retrieve Knowledge — utilized for decision-making. 4. And that hopefully enables you to grasp Wisdom, comprehend insights, and ultimately create value. There are databases that belong to the Big Guys. The rest of them should stay personal. By now, you should realize how valuable your data is. So why give it away? Kase keeps your data yours. See www.wisd.com/kase for more details. Terms of Use (EULA): https://www.wisd.com/kase/eula

About

Calendar Notes Pro

This app integrates your calendar and notes into a single, minimalist interface. View notes directly on your calendar and enjoy instant auto-save for a stress-free organization experience. It prioritizes privacy by storing all data locally on your device.

Highlights
  • Notes displayed on calendar
  • Instant auto-save
  • Minimalist design
  • Tap to write notes
  • Fully offline functionality
  • Local data storage
Features
Read full description

Tired of switching between your calendar and notes app? Calendar Notes Pro combines both into one beautifully simple experience. WHY CALENDAR NOTES PRO? - See Your Month at a Glance — Every note appears directly on your calendar. No more hunting through folders or scrolling through lists. - Instant Auto-Save — Start typing and your notes save automatically. No save buttons, no lost work, no stress. - Premium Minimalist Design — A clean, distraction-free interface in elegant black and white. No clutter, just clarity. - Tap Any Day to Write — Simply tap a date to add or edit a note. It's that easy. - Fully Offline — Your notes stay on your device. No account required, no internet needed. PERFECT FOR - Quick daily reminders - Planning your week ahead - Tracking habits and goals - Jotting down appointments - Keeping a simple daily journal PRIVACY FIRST Calendar Notes Pro stores everything locally on your device. We don't collect your data, track your habits, or require sign-ups. Your notes are yours alone. Download Calendar Notes Pro today and experience the simplest way to stay organized.

Screenshots

Kase₄4 screens
Calendar Notes Pro3 screens

Verdict

The call

The clearest difference is review sentiment: Calendar Notes Pro at 100% against Kase₄'s 0%. Calendar Notes Pro also leads on price (Free vs $9.99) and in-app purchases (none vs 4). Kase₄'s advantage is 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

Calendar Notes Pro is free to download; Kase₄ costs $9.99 up front. Kase₄ sells 4 one-off in-app purchases. Calendar Notes Pro asks for nothing beyond the download.

UpkeepUpdate frequency

Kase₄ ships an update every 2 months, Calendar Notes Pro daily. The most recent releases landed on October 3, 2026 and September 23, 2026 respectively.

Scorecard6 real differences · 4 level
Kase₄ versus Calendar Notes Pro: the parameters behind the verdict, then further details
ParameterKase₄Calendar Notes Pro
Price$9.99Free — better
Rating—5.0 (2 ratings) — better
Positive reviews0.0% of reviews100.0% of reviews — better
Number of ratings—2 — better
Update frequencyEvery 2 monthsDaily — better
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationPaidAd-supported — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size17 MB35 MB
Age rating4+4+
DeveloperKenneth WongAlok Haldiya

Customer experience

Kase₄

Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Calendar Notes Pro

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

4 purchases

Kase₄

One-time4
  • Tip: Dollar$1.00
  • Tip: Coffee$2.00
  • Tip: Coffee, CA$4.00
Show 1 more
  • Tip: Caffè Mocha$5.00
None

Calendar Notes Pro

No in-app purchases

Questions

Is Kase₄ free?
Kase₄ costs $9.99, and also offers in-app purchases.
Is Calendar Notes Pro free?
Calendar Notes Pro is free to download, with no in-app purchases.
Do Kase₄ or Calendar Notes Pro have ads?
Calendar Notes Pro shows ads; Kase₄ does not.
Which is updated more often, Kase₄ or Calendar Notes Pro?
Kase₄ ships an update every 2 months, and Calendar Notes Pro daily. Most recently, Kase₄ was updated on October 3, 2026 and Calendar Notes Pro on September 23, 2026.

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