# 有序Syso vs When

The clearest difference is iOS requirement: 有序Syso at 13.0 against When's 18.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 有序Syso sells 2 in-app purchases, starting at $1.99 per month and When sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | 有序Syso | When |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | — | Every 4 days |
| Monetization | — | Freemium |
| Size | 50 MB | 6 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 9+ | 4+ |
| Developer | [Shandong Lingdongjing Software Technology Co., Ltd.](https://appshunter.io/developer/1872085715) | [Andras Varga](https://appshunter.io/developer/1841546733) |

## What reviewers say

### 有序Syso

[App page](https://appshunter.io/ios/app/syso/id6782088125)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 有序Syso Pro（月度） | $1.99 | per month |
| 有序Syso Pro（年度） | $22.99 | per year |


### When

[App page](https://appshunter.io/ios/app/when-then-and-next/id6804155280)

This app helps you remember important dates and track recurring tasks. It offers timeline views for upcoming events and 'last time' tracking for past activities. Organize items with categories, add notes, and use widgets for quick access.

**Highlights:** Timeline view for upcoming events, Track recurring tasks, Expiry and renewal date tracking, Birthday and anniversary reminders, Home and Lock Screen widgets, Organize with categories and icons, Add notes and attachments

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $0.99 | per month |
| Pro Yearly | $7.99 | per year |
| When Pro Lifetime | $19.99 | one-time |


## Frequently asked questions

### Is 有序Syso free?

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

### Is When free?

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

### Do 有序Syso or When have ads?

Neither 有序Syso nor When shows ads.

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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.*