Comparison

Eventium vs Cognitive Biases

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

Head to head
About

Eventium

This calendar app offers a revolutionary way to view your schedule, displaying actual events instead of just dots. It provides multiple view options, integrated task management, and advanced event customization. Widgets are available for quick access to upcoming events.

Highlights
  • Month, week, and day views
  • Vertical scrolling month view
  • Integrated tasks within calendar
  • Calendar widgets for home screen
  • Event customization (alerts, repeats, colors)
  • Cut, copy, and paste events
  • Supports multiple calendar accounts
Features
Read full description

Introducing Eventium, a calendar app revolution! Eventium allows you to see actual events, not just dots! We now have Calendar Widgets! Add the Eventium widget to your Home Screen to see the events you have now, next and more! * iOS 15+ * This feature requires an in-app purchase Features: ● Month View Full screen month, swipe left and right to navigate ● Vertical Scrolling Month View Swipe up, swipe down, see everything ● Week View Layout options for portrait and landscape Horizontal or vertical layout Configurable start day ● Day View Configuration options for colors, layouts and more ● List View See and search all your events in a vertically scrolling list ● Year View Only available on tablet devices ● Integrated Tasks Within Your Calendar Group due, overdue and floating tasks in a single 'event' in your calendar, grouped by task list or all tasks * This feature requires an in-app purchase Invite contacts or even just an email address to events Add multiple alerts to events Add multiple repeat rules to events Set day background colors and images Print the year, month, week or day views Cut, Copy and Paste events Mark events as complete View event attachments Override the calendar color on an event Supports calendars in iCloud, Google, Exchange, Yahoo and any calendar that can be synced to the device Delete Event As Spam — long tap option will allow a spam event to be deleted without notifying the sender * Supports iOS 15 and above on iPhone, iPad and iPod Touch

About

Cognitive Biases

Explore common cognitive biases with clear explanations and visual examples. This tool helps UX designers, product managers, and decision-makers refine their instincts and make more informed choices.

Highlights
  • Curated list of cognitive biases
  • Visual illustrations for each bias
  • Concise, jargon-free explanations
  • Bookmark favorite biases
  • Tailored for product design and management
Features
Read full description

Unlock the secrets of the human mind with BiasBuster, the essential tool for UX designers, product managers, and decision-makers. Dive into the fascinating world of cognitive biases with an app that’s designed to sharpen your decision-making and refine your design instincts. A succinct collection of the most common cognitive biases, each accompanied by a vivid illustration and a concise summary. With this handy reference, you’ll navigate the intricacies of human psychology with ease, ensuring your product decisions are informed and objective. Features: - Handpicked Biases: A curated list of cognitive biases tailored for product design and management. - Visual Learning: Each bias is paired with an engaging, illustrative example, simplifying complex concepts. - Oversimplified Summaries: Get to the core of each bias with clear, jargon-free explanations. - Favorites List: Bookmark biases you encounter frequently to revisit them anytime.

Screenshots

Eventium4 screens
Cognitive Biases3 screens

Verdict

The call

The clearest difference is price: Cognitive Biases at Free against Eventium's $3.99. Cognitive Biases also leads on in-app purchases (none vs 2) and rating (5.0 vs 4.7). Eventium's advantage is update cadence (every 2 weeks vs every 40 months) and ratings volume (378 vs 2). On ads, 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

Cognitive Biases is free to download; Eventium costs $3.99 up front. Eventium sells 2 one-off in-app purchases. Cognitive Biases asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Cognitive Biases holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Eventium has 378 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 85% of Eventium's written reviews are positive against 100% of Cognitive Biases's.

UpkeepUpdate frequency

Eventium ships an update every 2 weeks, Cognitive Biases every 40 months. The most recent releases landed on October 26, 2026 and October 21, 2026 respectively.

Scorecard7 real differences · 3 level
Eventium versus Cognitive Biases: the parameters behind the verdict, then further details
ParameterEventiumCognitive Biases
Price$3.99Free — better
Rating4.7 (378 ratings)5.0 (2 ratings) — better
Positive reviews85.0% of reviews100.0% of reviews — better
Number of ratings378 — better2
Update frequencyEvery 2 weeks — betterEvery 40 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.016
Further details — not scored
Size50 MB22 MB
Age rating4+4+
Developerjohnhair.comShapes.io Limited

Customer experience

Eventium

All ratings378 ratings
Positive94.2%
Neutral2.1%
Negative3.7%
Written reviews147 reviews
Positive85.0%
Neutral2.0%
Negative12.9%

Cognitive Biases

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Eventium

Reported bugs

3 issues
  • Duplicate holidays appearing
  • Inconsistent event time display
  • Disappearing past events

Requested features

4 requests
  • Dark mode option
  • Improved task management and integration
  • Shared calendars and family/group features
  • Better widget and Apple Watch support

Cognitive Biases

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

Eventium

One-time2
  • Tasks, Reminders, To Do Lists$0.99
  • Calendar Widgets$1.99
None

Cognitive Biases

No in-app purchases

Questions

Is Eventium free?
Eventium costs $3.99, and also offers in-app purchases.
Is Cognitive Biases free?
Cognitive Biases is free to download, with no in-app purchases.
Which has better reviews, Eventium or Cognitive Biases?
Cognitive Biases is rated higher. Eventium averages 4.7 out of 5 from 378 ratings, while Cognitive Biases averages 5.0 from 2 ratings.
Do Eventium or Cognitive Biases have ads?
Neither Eventium nor Cognitive Biases shows ads.
Which is updated more often, Eventium or Cognitive Biases?
Eventium ships an update every 2 weeks, and Cognitive Biases every 40 months. Most recently, Eventium was updated on October 26, 2026 and Cognitive Biases on October 21, 2026.

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