# One Day vs Countdown

The clearest difference is ads: One Day at none against Countdown's shown. One Day also leads on ratings volume (91 vs 2) and rating (4.7 vs 4.5). Countdown's advantage is update cadence (every 3 months vs every 12 months). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. One Day sells 1 one-off in-app purchase and Countdown sells 3 in-app purchases, starting at $1.49 per month. Whichever you choose, the download price is not the number that matters.

One Day holds the better App Store score, 4.7 against 4.5. That said, the two scores are not equally well evidenced: One Day has 91 ratings behind it against 2, so its average is the more settled of the two.

One Day ships an update every 12 months, Countdown every 3 months. The most recent releases landed on October 11, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | One Day | Countdown |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (91 ratings)](https://appshunter.io/ios/app/one-day-countdown/id1149322146/reviews)** | [4.5 (2 ratings)](https://appshunter.io/ios/app/countdown-days-reminder/id1477739949/reviews) |
| Number of ratings | **91** | 2 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 12 months | **Every 3 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 32 MB | 33 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Peter Johnson](https://appshunter.io/developer/397354116) | [朝霞 彭](https://appshunter.io/developer/1616283456) |

## What reviewers say

### One Day

[App page](https://appshunter.io/ios/app/one-day-countdown/id1149322146)

Easily track important upcoming events with customizable countdowns. Share your excitement with friends and family via social media or email. An iMessage app is also included for quick updates.

**Highlights:** Countdown to events, Repeat events weekly, monthly, yearly, Share to social media and email, iMessage app integration, Today page widget, Custom background images (paid), Track more events (paid)

**Features:** macOS Compatibility, iMessage stickers

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Multiple Events and Custom Images | $1.99 | one-time |


### Countdown

[App page](https://appshunter.io/ios/app/countdown-days-reminder/id1477739949)

Track important dates with a countdown calendar. Visualize your upcoming events with custom backgrounds and manage them through categorized lists. Secure your data with password protection.

**Highlights:** Date counting (days left/passed), Customizable background images, Event classification and management, Calendar view for daily events, Lunar calendar date support, Password protection for privacy

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus Version | $1.49 | per month |
| Quarterly Plus Version | $4.49 | per 3 months |
| Advanced Version | $5.99 | one-time |


## Frequently asked questions

### Is One Day free?

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

### Is Countdown free?

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

### Which has better reviews, One Day or Countdown?

One Day is rated higher. One Day averages 4.7 out of 5 from 91 ratings, while Countdown averages 4.5 from 2 ratings.

### Do One Day or Countdown have ads?

Countdown shows ads; One Day does not.

### Which is updated more often, One Day or Countdown?

One Day ships an update every 12 months, and Countdown every 3 months. Most recently, One Day was updated on October 11, 2026 and Countdown on October 7, 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.*