# Pi Day Countdown vs Complex Conjugate Calculator

The clearest difference is update cadence: Complex Conjugate Calculator at every 6 days against Pi Day Countdown's every 18 months. Complex Conjugate Calculator also leads on device support (3 vs 1) and iOS requirement (13.0 vs 26.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Pi Day Countdown ships an update every 18 months, Complex Conjugate Calculator every 6 days. The most recent releases landed on October 23, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Pi Day Countdown | Complex Conjugate Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/pi-day-countdown/id424560921/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 18 months | **Every 6 days** |
| Monetization | Free | — |
| Size | 1 MB | 40 MB |
| Requires iOS | 26.0 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [iT Guy Technologies](https://appshunter.io/developer/398472366) | [Stage Coding](https://appshunter.io/developer/1637068135) |

## What reviewers say

### Pi Day Countdown

[App page](https://appshunter.io/ios/app/pi-day-countdown/id424560921)

This utility app helps users celebrate Pi Day and other significant dates. Set default alarms for Pi Day or customize messages for any event. Enjoy tracking important dates with a simple interface.

**Highlights:** Pi Day countdown, Customizable event alarms, Personalized messages, Date tracking utility

**Features:** macOS Compatibility, iMessage stickers, Vision Pro support

**In-app purchases:** none


### Complex Conjugate Calculator

[App page](https://appshunter.io/ios/app/complex-conjugate-calculator/id1619685165)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Pi Day Countdown free?

Pi Day Countdown is free to download, with no in-app purchases.

### Is Complex Conjugate Calculator free?

Complex Conjugate Calculator is free to download, with no in-app purchases.

### Do Pi Day Countdown or Complex Conjugate Calculator have ads?

Neither Pi Day Countdown nor Complex Conjugate Calculator shows ads.

### Which is updated more often, Pi Day Countdown or Complex Conjugate Calculator?

Pi Day Countdown ships an update every 18 months, and Complex Conjugate Calculator every 6 days. Most recently, Pi Day Countdown was updated on October 23, 2026 and Complex Conjugate Calculator on October 10, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*