Comparison

Kase₄ CE vs Collections Database

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

Head to head
About

Kase₄ CE

This app allows you to create and manage personal relational databases on your device. It offers a flexible and intuitive way to structure and access your data, with features like full-text search, custom field types, and data visualization tools.

Highlights
  • Relational database design
  • Customizable fields and data types
  • Full-text search with NLP
  • Data visualization with formatters
  • On-device OCR
  • Import/Export in CSV, JSON, KASE
  • Passcode and biometric lock
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

Collections Database

Organize anything with a personal database app. It offers over 20 field types, customizable layouts, and pre-built templates for common uses like books or expenses. Advanced features and iCloud sync are available.

Highlights
  • 20+ field types (text, number, picture, barcode, etc.)
  • Customizable fields and display styles
  • Pre-built templates (books, contacts, expenses, etc.)
  • Organize with collections and subcollections
  • Password, Face ID, and Touch ID protection
  • iCloud synchronization across devices
  • Advanced fields and calculations (Pro version)
Features
Read full description

Collections is a personal database app to organize anything. 1. A field for every use Collections supports over 20+ field types: • Text, Number • Boolean • Picture • Select • Email, URL, Phone • Password • Date, Time • Color • Barcode And with the Pro version you can use even more advanced fields. • Document reference - Link documents together • Group - Add multiple values for a field • Formula - Create a formula for calculated values. Powerful formula editor with full support to math functions like SUM, AVG • Sources - Import documents from external APIs with Javascript 2. Customizable • Add and reorder fields • Add a separator between fields to better visualize them • Fields have different display styles like primary, secondary, thumbnail • Filter and sort data 3. Templates Collections includes basic templates to get started: • Books • Contacts • Expenses • Subscriptions • Credentials • Inventory • School 5. Advanced management Collections has different tools to help you creating the data model. SUBCOLLECTIONS Organize data into collections and subcollections. Simply said, they are like folders. LISTS A list contains items used in documents and it's very flexible. It could represent a Genre for a book or a Status like 'Available', 'Out of stock' for an object in the inventory. 6. Security • Protect collections using a password, Face ID or Touch ID • Sensitive data such as passwords are encrypted by default 7. iCloud Sync Data is synced automatically between devices through iCloud. 8. Apple's Shortcuts support Expand the app capabilities with Apple's Shortcuts support. 9. Pro version features • Add unlimited documents (free version is limited to 100 documents) • Add files to documents • Add advanced fields • Views • Grid • Use Summary to perform calculations across documents

Screenshots

Kase₄ CE4 screens
Collections Database4 screens

Verdict

The call

The clearest difference is rating: Kase₄ CE at 5.0 against Collections Database's 4.6. Collections Database's advantage is update cadence (fortnightly vs every 2 months) and ratings volume (190 vs 6). On price, ads, in-app purchases and monetization model 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. Kase₄ CE sells 7 in-app purchases, starting at $0.49 per month and Collections Database sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Kase₄ CE holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Collections Database has 190 ratings behind it against 6, so its average is the more settled of the two.

UpkeepUpdate frequency

Kase₄ CE ships an update every 2 months, Collections Database fortnightly. The most recent releases landed on October 9, 2026 and October 16, 2026 respectively.

Scorecard3 real differences · 7 level
Kase₄ CE versus Collections Database: the parameters behind the verdict, then further details
ParameterKase₄ CECollections Database
PriceFreeFree
Rating5.0 (6 ratings) — better4.6 (190 ratings)
Positive reviews—87.1% of reviews
Number of ratings6190 — better
Update frequencyEvery 2 monthsFortnightly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac — better
Requires iOS15.015.0
Further details — not scored
Size17 MB25 MB
Age rating4+4+
DeveloperKenneth WongMatteo D'Ignazio

Customer experience

Kase₄ CE

All ratings6 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Collections Database

All ratings187 ratings
Positive90.9%
Neutral3.2%
Negative5.9%
Written reviews317 reviews
Positive87.1%
Neutral5.4%
Negative7.6%

Bugs and requests

Kase₄ CE

Not enough reviews yet to summarise bugs or requests.

Collections Database

Reported bugs

2 issues
  • Keyboard issues when using search
  • Inconsistent behavior between iOS and macOS versions

Requested features

4 requests
  • Collaborative features for sharing databases
  • More advanced reporting and visualization options
  • Improved import/export functionality
  • Ability to customize the appearance and layout

In-app purchases

7 purchases

Kase₄ CE

Subscriptions3
  • Complete: One Month$0.491 Month
  • Complete: Six Months$2.596 Months
  • Complete: One Year$4.691 Year
One-time4
  • Tip: Dollar$1.00
  • Tip: Coffee$2.00
  • Tip: Coffee, CA$4.00
Show 1 more
  • Tip: Caffè Mocha$5.00
3 purchases

Collections Database

One-time3
  • Collections Ultra (Upgrade)$1.99
  • Collections Pro$7.99
  • Collections Ultra$9.99

Questions

Is Kase₄ CE free?
Kase₄ CE is free to download, with in-app purchases available.
Is Collections Database free?
Collections Database is free to download, with in-app purchases available.
Which has better reviews, Kase₄ CE or Collections Database?
Kase₄ CE is rated higher. Kase₄ CE averages 5.0 out of 5 from 6 ratings, while Collections Database averages 4.6 from 190 ratings.
Do Kase₄ CE or Collections Database have ads?
Neither Kase₄ CE nor Collections Database shows ads.
Which is updated more often, Kase₄ CE or Collections Database?
Kase₄ CE ships an update every 2 months, and Collections Database fortnightly. Most recently, Kase₄ CE was updated on October 9, 2026 and Collections Database on October 16, 2026.

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