# Countdown Calendar Timers vs Big Day

The clearest difference is update cadence: Big Day at every 2 weeks against Countdown Calendar Timers's monthly. Big Day also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Countdown Calendar Timers sells 2 in-app purchases, starting at $9.99 per year and Big Day sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Countdown Calendar Timers ships an update monthly, Big Day every 2 weeks. The most recent releases landed on October 1, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Countdown Calendar Timers | Big Day |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/countdown-calendar-timers/id6748654239/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 15 MB | 5 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Mustafa Uzun](https://appshunter.io/developer/1826846269) | [Damien Asseya](https://appshunter.io/developer/878472983) |

## What reviewers say

### Countdown Calendar Timers

[App page](https://appshunter.io/ios/app/countdown-calendar-timers/id6748654239)

This app helps you track important upcoming events with customizable countdowns. Never miss a birthday, holiday, or deadline again with smart reminders and calendar integration.

**Highlights:** Customizable countdown timers, Birthday and anniversary reminders, Calendar import, Count up or count down, Repeating event rules, Color-coding and icons

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Yearly Plan | $9.99 | per year |
| Lifetime | $17.99 | one-time |


### Big Day

[App page](https://appshunter.io/ios/app/big-day-countdown-timer/id6799796713)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Countdown Pro | $5.99 | one-time |


## Frequently asked questions

### Is Countdown Calendar Timers free?

Countdown Calendar Timers is free to download, with in-app purchases available.

### Is Big Day free?

Big Day is free to download, with in-app purchases available.

### Do Countdown Calendar Timers or Big Day have ads?

Neither Countdown Calendar Timers nor Big Day shows ads.

### Which is updated more often, Countdown Calendar Timers or Big Day?

Countdown Calendar Timers ships an update monthly, and Big Day every 2 weeks. Most recently, Countdown Calendar Timers was updated on October 1, 2026 and Big Day on October 12, 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.*