# 倒数纪念日 vs HiDays

The clearest difference is update cadence: HiDays at every 8 days against 倒数纪念日's monthly. 倒数纪念日's advantage is iOS requirement (13.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 倒数纪念日 sells 7 in-app purchases, starting at $0.99 per month and HiDays sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

倒数纪念日 ships an update monthly, HiDays every 8 days. The most recent releases landed on September 10, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | 倒数纪念日 | HiDays |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (3 ratings)](https://appshunter.io/ios/app/id1555841859/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 8 days** |
| Monetization | Freemium | — |
| Size | 85 MB | 75 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [Extreme Point](https://appshunter.io/developer/1895910092) | [阳 张](https://appshunter.io/developer/1448121990) |

## What reviewers say

### 倒数纪念日

[App page](https://appshunter.io/ios/app/id1555841859)

This app helps you manage important dates like anniversaries, birthdays, and holidays. It provides timely notifications so you never miss a significant event. Customize your experience with various themes and secure your data with privacy features.

**Highlights:** Countdown management, Event reminders, Customizable categories, Lunar calendar support, Repeat cycles, Multiple themes, Privacy protection

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 连续包月VIP | $0.99 | per month |
| 连续包季VIP | $0.99 | per 3 months |
| 连续包年VIP | $2.99 | per year |
| 1个月VIP | $0.99 | one-time |
| 3个月VIP | $0.99 | one-time |
| 12个月VIP | $2.99 | one-time |
| 永久VIP | $3.99 | one-time |


### HiDays

[App page](https://appshunter.io/ios/app/hidays-countdown-tracker/id1664492584)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Life Time Pro Access | $2.99 | one-time |


## Frequently asked questions

### Is 倒数纪念日 free?

倒数纪念日 is free to download, with in-app purchases available.

### Is HiDays free?

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

### Do 倒数纪念日 or HiDays have ads?

Neither 倒数纪念日 nor HiDays shows ads.

### Which is updated more often, 倒数纪念日 or HiDays?

倒数纪念日 ships an update monthly, and HiDays every 8 days. Most recently, 倒数纪念日 was updated on September 10, 2026 and HiDays on September 17, 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.*