# Countdown Reminder vs 念念不忘 · 纪念日AI贺卡

The clearest difference is update cadence: Countdown Reminder at weekly against 念念不忘 · 纪念日AI贺卡's every 2 weeks. Countdown Reminder also leads on device support (3 vs 1) and iOS requirement (12.0 vs 17.6). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Countdown Reminder sells 2 in-app purchases, starting at $0.99 per month and 念念不忘 · 纪念日AI贺卡 sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Countdown Reminder ships an update weekly, 念念不忘 · 纪念日AI贺卡 every 2 weeks. The most recent releases landed on October 7, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Countdown Reminder | 念念不忘 · 纪念日AI贺卡 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 weeks |
| Size | 59 MB | 40 MB |
| Requires iOS | **12.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [国飞 闫](https://appshunter.io/developer/1703504926) | [三淼 李](https://appshunter.io/developer/1812594990) |

## What reviewers say

### Countdown Reminder

[App page](https://appshunter.io/ios/app/countdown-reminder-key-days/id6754815787)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 month VIP | $0.99 | per month |
| Permanent VIP | $3.99 | one-time |


### 念念不忘 · 纪念日AI贺卡

[App page](https://appshunter.io/ios/app/ai/id6759729129)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus 会员 · 月付 | $1.99 | per month |
| Plus 会员 · 年付 | $14.99 | per year |


## Frequently asked questions

### Is Countdown Reminder free?

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

### Is 念念不忘 · 纪念日AI贺卡 free?

念念不忘 · 纪念日AI贺卡 is free to download, with in-app purchases available.

### Do Countdown Reminder or 念念不忘 · 纪念日AI贺卡 have ads?

Neither Countdown Reminder nor 念念不忘 · 纪念日AI贺卡 shows ads.

### Which is updated more often, Countdown Reminder or 念念不忘 · 纪念日AI贺卡?

Countdown Reminder ships an update weekly, and 念念不忘 · 纪念日AI贺卡 every 2 weeks. Most recently, Countdown Reminder was updated on October 7, 2026 and 念念不忘 · 纪念日AI贺卡 on October 9, 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.*