# Birthdays Countdown vs Day0

The clearest difference is in-app purchases: Day0 at none against Birthdays Countdown's 4. Day0 also leads on ads (none vs shown) and update cadence (every 6 days vs every 3 months). Birthdays Countdown's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price there is nothing between them.

Both are free to download. Birthdays Countdown sells 4 in-app purchases, starting at $1.99 per month. Day0 asks for nothing beyond the download.

Birthdays Countdown ships an update every 3 months, Day0 every 6 days. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Birthdays Countdown | Day0 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (46 ratings)](https://appshunter.io/ios/app/birthdays-countdown/id1254766135/reviews)** | — |
| Number of ratings | **46** | — |
| Positive reviews | 68.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 6 days** |
| Monetization | Free with in-app purchases | — |
| Size | 64 MB | 31 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [tadashi atoji](https://appshunter.io/developer/431510057) | [MARQUE & CROWN INC.](https://appshunter.io/developer/6793105578) |

## What reviewers say

### Birthdays Countdown

[App page](https://appshunter.io/ios/app/birthdays-countdown/id1254766135)

This app helps you keep track of upcoming birthdays with timely notifications. Customize reminder settings and choose whether to display years and ages. An optional add-on can remove ads and increase widget capacity.

**Highlights:** Birthday countdowns, Customizable notifications, Year and age display options, Widget customization, Ad removal option

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro version (monthly) | $1.99 | per month |
| Pro version(Year) | $19.99 | per year |
| Increase widget cells | $1.99 | one-time |
| Remove Ads | $4.99 | one-time |


### Day0

[App page](https://appshunter.io/ios/app/day0-private-diary/id6793105576)

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

**In-app purchases:** none


## Frequently asked questions

### Is Birthdays Countdown free?

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

### Is Day0 free?

Day0 is free to download, with no in-app purchases.

### Do Birthdays Countdown or Day0 have ads?

Birthdays Countdown shows ads; Day0 does not.

### Which is updated more often, Birthdays Countdown or Day0?

Birthdays Countdown ships an update every 3 months, and Day0 every 6 days. Most recently, Birthdays Countdown was updated on November 2, 2026 and Day0 on October 31, 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.*