# 何日経った？ vs DaysKeeper

The clearest difference is in-app purchases: 何日経った？ at none against DaysKeeper's 4. 何日経った？ also leads on ads (none vs shown). DaysKeeper's advantage is update cadence (every 4 weeks vs every 16 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. DaysKeeper sells 4 in-app purchases, starting at $0.99 per month. 何日経った？ asks for nothing beyond the download.

何日経った？ ships an update every 16 months, DaysKeeper every 4 weeks. The most recent releases landed on October 12, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | 何日経った？ | DaysKeeper |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 16 months | **Every 4 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 4 MB | 9 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [KAZUKI KUBO](https://appshunter.io/developer/936625453) | [G-SOFT](https://appshunter.io/developer/368394644) |

## What reviewers say

### 何日経った？

[App page](https://appshunter.io/ios/app/id6475248021)

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

**In-app purchases:** none


### DaysKeeper

[App page](https://appshunter.io/ios/app/dayskeeper/id6478824910)

Track days past and days remaining until important dates. Add photos, notes, and colors to your events. Receive notifications for upcoming anniversaries and milestones.

**Highlights:** Track days past and remaining, Attach photos and notes to dates, Customizable colors and tags, Calendar and reminder integration, Sortable date list, Customizable notifications, iCloud device sync

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Hide ads | $0.99 | per month |
| Notification by number of days | $0.99 | one-time |
| Number of Date-Data | $2.99 | one-time |
| Hide ads (Unlimited) | $5.99 | one-time |


## Frequently asked questions

### Is 何日経った？ free?

何日経った？ is free to download, with no in-app purchases.

### Is DaysKeeper free?

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

### Do 何日経った？ or DaysKeeper have ads?

DaysKeeper shows ads; 何日経った？ does not.

### Which is updated more often, 何日経った？ or DaysKeeper?

何日経った？ ships an update every 16 months, and DaysKeeper every 4 weeks. Most recently, 何日経った？ was updated on October 12, 2026 and DaysKeeper on October 18, 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.*