---
title: "Piday - Reviews, Revenue and Downloads in Australia | Apple App Store"
description: "PiDay is the nerdiest calendar app ever made.  Every day, PiDay opens to today and shows you exactly where that date appears in the first five billion decimal digits of pi. Search for your birthday, a"
---

# Piday — Australia
> Mathemagical Calendar

![Piday App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/d9/aa/8b/d9aa8ba4-5a61-9f2d-c779-6c2e494d365a/AppIcon-0-1x_U007epad-0-1-sRGB-85-220-0.png/434x0w.png)

**Developer:** [Erik Veland](https://apptail.io/developer/erik-veland-xadvOb)
**Category:** Education
**Rating:** 3.4/5 (5 ratings)
**Price:** Free
**Bundle ID:** academy.glasscode.piday
**Store:** Apple App Store
**Country:** Australia
**Version:** 1.3 (kim) (released 2026-04-29)
**Original Release:** 2026-03-26
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/au/app/app/id6760696150)
**AppTail Page:** [https://apptail.io/app/piday-Fxez/australia](https://apptail.io/app/piday-Fxez/australia)

## Piday Description
PiDay is the nerdiest calendar app ever made.

Every day, PiDay opens to today and shows you exactly where that date appears in the first five billion decimal digits of pi. Search for your birthday, an anniversary, or any date you care about, then see where it lives in infinity.

PiDay searches multiple date formats and highlights the best match, so you can explore your date from different calendar conventions and compare where each one appears.

Features:

Find today’s date in pi instantly
Search birthdays, anniversaries, and any other date
See the exact position where a date appears
Compare multiple date formats
Explore a calendar heat map of how early dates appear
Save favorite dates
Share your discoveries as cards
Personalize the app with multiple themes
Works on iPhone, iPad, and Mac
PiDay keeps things simple:

No accounts
No ads
No tracking
A decade worth of bundled dates, or search any string using a live lookup service for dates outside the bundled range.

If you’ve ever wondered whether your birthday is hiding in pi, this is the app for you.

## Piday Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/3e/2c/4b/3e2c4b02-32db-3fd6-768c-b812ea37548c/iPhones__6.5-01.png/1284x2778.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/59/1a/4d/591a4dad-0e54-d9f6-023a-5f1fcfb724ec/iPhones__6.5-02.png/1284x2778.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/57/99/f6/5799f642-e411-f9f7-cc96-d2469b8ea845/iPhones__6.5-05.png/1284x2778.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/29/26/59/2926591d-fa5e-5b12-0bcc-5089292d0246/iPhones__6.5-06.png/1284x2778.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/97/97/ea/9797eace-02d3-f913-cfd0-8c171db7f3e4/iPhones__6.5-07.png/1284x2778.png)
- [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/94/b3/3a/94b33af4-95b4-1882-9307-998d7921cc80/iPhones__6.5-08.png/1284x2778.png)
- [Screenshot 7](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/4a/50/48/4a5048a4-87de-8c08-e859-9c03c1d48751/iPhones__6.5-03.png/1284x2778.png)
- [Screenshot 8](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/0f/9a/76/0f9a7613-f0a4-f5e5-53e9-73489fc1bbb2/iPhones__6.5-04.png/1284x2778.png)

## Piday Rating Breakdown in Australia
- 5 stars: 3 (60%)
- 4 stars: 0 (0%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 stars: 2 (40%)






## Piday Available In
- [Australia](https://apptail.io/app/piday-Fxez/australia)
- [Venezuela](https://apptail.io/app/piday-Fxez/venezuela)

---

## About AppTail

[AppTail](https://apptail.io) is a mobile app intelligence platform providing app analytics, ASO (App Store Optimization) tools, keyword tracking, competitor analysis, revenue estimates, and review monitoring for iOS App Store apps. Track your app's performance, discover ranking keywords, monitor competitors, and analyze market trends.

- [Search Apps](https://apptail.io)
- [Top Charts](https://apptail.io/top-iphone-apps)
- [Sign Up for Full Access](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=footer)

*Data provided by [AppTail](https://apptail.io) - Mobile App Intelligence Platform*