# Countdown 321 vs Instant D

The clearest difference is in-app purchases: Instant D at none against Countdown 321's 4. Instant D also leads on update cadence (every 5 days vs every 5 months). Countdown 321's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Countdown 321 sells 4 one-off in-app purchases. Instant D asks for nothing beyond the download.

Countdown 321 ships an update every 5 months, Instant D every 5 days. The most recent releases landed on June 6, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Countdown 321 | Instant D |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/countdown-321/id6499282435/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Every 5 days** |
| Monetization | Free | — |
| Size | 59 MB | 6 MB |
| Requires iOS | 18.6 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Later Creative LLC](https://appshunter.io/developer/1444959285) | [joonseo park](https://appshunter.io/developer/1265149051) |

## What reviewers say

### Countdown 321

[App page](https://appshunter.io/ios/app/countdown-321/id6499282435)

Track time until future events or elapsed time since past milestones. Customize with personal photos and colors, and share your countdowns as images. Receive notifications for important dates and import birthdays automatically.

**Highlights:** Countdown and count-up tracking, Customizable widgets for home and lock screens, Personalized backgrounds and styles, Event notifications and milestone alerts, Birthday import from contacts, Shareable countdown images

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Bread-sized tip | $1.99 | one-time |
| Full Version | $2.99 | one-time |
| Peanut Butter-Sized Tip | $2.99 | one-time |
| Jam-Sized Tip | $3.99 | one-time |


### Instant D

[App page](https://appshunter.io/ios/app/instant-d-day-widget-and-count/id6773590357)

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

**In-app purchases:** none


## Frequently asked questions

### Is Countdown 321 free?

Countdown 321 is free to download, with in-app purchases available.

### Is Instant D free?

Instant D is free to download, with no in-app purchases.

### Do Countdown 321 or Instant D have ads?

Instant D shows ads; Countdown 321 does not.

### Which is updated more often, Countdown 321 or Instant D?

Countdown 321 ships an update every 5 months, and Instant D every 5 days. Most recently, Countdown 321 was updated on June 6, 2026 and Instant D on September 10, 2026.

---

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