# Countdown Calendar vs Big Day

The clearest difference is update cadence: Countdown Calendar at every 6 days against Big Day's every 2 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Countdown Calendar sells 1 one-off in-app purchase and Big Day sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Countdown Calendar ships an update every 6 days, Big Day every 2 weeks. The most recent releases landed on September 23, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Countdown Calendar | Big Day |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 2 weeks |
| Size | 18 MB | 5 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Serhii Surzhykov](https://appshunter.io/developer/1883337368) | [Damien Asseya](https://appshunter.io/developer/878472983) |

## What reviewers say

### Countdown Calendar

[App page](https://appshunter.io/ios/app/countdown-calendar-timefeel/id6760222007)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Premium | $9.99 | 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 free?

Countdown Calendar 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 or Big Day have ads?

Neither Countdown Calendar nor Big Day shows ads.

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

Countdown Calendar ships an update every 6 days, and Big Day every 2 weeks. Most recently, Countdown Calendar was updated on September 23, 2026 and Big Day on September 21, 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.*