# 日子提醒 vs HiDays

The clearest difference is in-app purchases: 日子提醒 at none against HiDays's 1. 日子提醒 also leads on update cadence (every 3 days vs every 8 days) and iOS requirement (13.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. HiDays sells 1 one-off in-app purchase. 日子提醒 asks for nothing beyond the download.

日子提醒 ships an update every 3 days, HiDays every 8 days. The most recent releases landed on September 29, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | 日子提醒 | HiDays |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 8 days |
| Size | 22 MB | 75 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [Beijing Houyuan Zhixing Technology Co.,Ltd.](https://appshunter.io/developer/1144345874) | [阳 张](https://appshunter.io/developer/1448121990) |

## What reviewers say

### 日子提醒

[App page](https://appshunter.io/ios/app/id1585185536)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 日子提醒 free?

日子提醒 is free to download, with no in-app purchases.

### Is HiDays free?

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

### Do 日子提醒 or HiDays have ads?

Neither 日子提醒 nor HiDays shows ads.

### Which is updated more often, 日子提醒 or HiDays?

日子提醒 ships an update every 3 days, and HiDays every 8 days. Most recently, 日子提醒 was updated on September 29, 2026 and HiDays on October 4, 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.*