# When · Days That Matter vs MemoryDay.

The clearest difference is update cadence: When · Days That Matter at every 3 days against MemoryDay.'s every 3 weeks. When · Days That Matter also leads on iOS requirement (17.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. When · Days That Matter sells 1 one-off in-app purchase and MemoryDay. sells 5 in-app purchases, starting at $0.99 per 3 months. Whichever you choose, the download price is not the number that matters.

When · Days That Matter ships an update every 3 days, MemoryDay. every 3 weeks. The most recent releases landed on September 26, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | When · Days That Matter | MemoryDay. |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 3 weeks |
| Size | 6 MB | 78 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [杰龙 刘](https://appshunter.io/developer/1481214183) | [思明 李](https://appshunter.io/developer/1895564643) |

## What reviewers say

### When · Days That Matter

[App page](https://appshunter.io/ios/app/when-days-that-matter/id1616365331)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| When Premium · Lifetime Access | $0.99 | one-time |


### MemoryDay.

[App page](https://appshunter.io/ios/app/memoryday/id6763980778)

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MemoryDay 季度会员 | $0.99 | per 3 months |
| MemoryDay 年度会员 | $1.99 | per year |
| 年度会员升级永久会员 | $1.99 | one-time |
| 季度会员升级永久会员 | $2.99 | one-time |
| MemoryDay 永久会员 | $3.99 | one-time |


## Frequently asked questions

### Is When · Days That Matter free?

When · Days That Matter is free to download, with in-app purchases available.

### Is MemoryDay. free?

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

### Do When · Days That Matter or MemoryDay. have ads?

Neither When · Days That Matter nor MemoryDay. shows ads.

### Which is updated more often, When · Days That Matter or MemoryDay.?

When · Days That Matter ships an update every 3 days, and MemoryDay. every 3 weeks. Most recently, When · Days That Matter was updated on September 26, 2026 and MemoryDay. on September 14, 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.*