அமைதியான காலண்டர் ஏன்?
Why a calendar should be calm: design notes and the research behind them.
ஒரு பார்வையில் பதில்
Working memory is small
People can hold roughly four meaningful items in mind at once. A panchangam screen that lists thirty values makes the reader search. The first screen of the app therefore holds one answer, whether the present time is good or best avoided, with sunrise, thithi and nakshatram close by. Everything else is one scroll down, in a fixed order that becomes familiar within a week.
Cowan, N. (2001). The magical number 4 in short-term memory. Behavioral and Brain Sciences, 24(1). · Sweller, J. (1988). Cognitive load during problem solving. Cognitive Science, 12(2).
எளிதாகப் படிப்பது நம்பிக்கை தரும்
Fluent reading feels trustworthy
When text is easy to process, readers judge it as clearer and more credible. Tamil leads every line in the language most users think in; English sits below, smaller, for those who want it. Times always use digits, tabular numerals and a day-part word, so a glance is enough.
Alter, A. L., & Oppenheimer, D. M. (2009). Uniting the tribes of fluency to form a metacognitive nation. Personality and Social Psychology Review, 13(3).
சொல்லும் விதம் உணர்வை மாற்றும்
Framing changes how a fact feels
The same information, framed as a loss, draws a stronger response than when framed neutrally. Many almanac apps call periods bad or dangerous and pair them with red warnings. Here the tradition's own advice is used: avoid starting new work, and what the time is suited for. Hatching and a word carry the meaning, so colour never has to alarm.
Tversky, A., & Kahneman, D. (1981). The framing of decisions and the psychology of choice. Science, 211(4481).
அறிவிப்புகள் கவனத்தைப் பிரிக்கும்
Notifications fragment attention
In a controlled study, simply receiving a phone notification, without looking at it, measurably worsened performance on an attention task. The app sends no promotional notifications, has no streaks and never asks for a rating. The only message it sends is a reminder someone set themselves, written as a plan: the day, the window, the city.
Stothart, C., Mitchum, A., & Yehnert, C. (2015). The attentional cost of receiving a cell phone notification. Journal of Experimental Psychology: Human Perception and Performance, 41(4).
நேரத்தை நிறம் சொல்லும்
Colour as a cue for time
The masthead follows the sky: coral at dawn, orange by day, pink at dusk, purple at night. It is a simple orientation cue, recognised faster than reading a clock, and it makes each visit feel connected to the actual hour outside.
Design note. Hour palette from the Namma design system.