何日経った? vs Day Count
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
何日経った?
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登録した出来事から何日経過したかを可視化するシンプルなアプリです。 【機能・特徴】 ・イベント名とアイコンで出来事を追加できます ・経過日数が表示されます ・イベント右上のアイコンをタップすると、編集・削除・経過時間のリセットができます
Day Count
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"When's our anniversary again?" "How many days has it been?" Enter a date once, and Day Count keeps counting every day. Good for • Never forgetting a wedding anniversary or a child's birthday • Counting the days since you started dating • Knowing how long it's been since you quit a job or moved • Quietly keeping track of a memorial day • Watching the countdown to a trip or a concert • Noting expiry dates, or the day you bought an appliance Past or future, entered the same way You don't choose past or future. If the date is ahead, you see "days left." If it's behind, you see "days since." The app switches for you. Counted down to the second "104,190 hours 16 minutes 05 seconds since." The detail screen counts in real time, and also shows years, months, weeks, and days. How old you were Your dates line up on a single timeline. Using the birthday you enter at the start, each one shows your age at the time. Next milestone 100 days, 1,000 days, 10 years: see how many days until the next one. Yearly notifications Get notified on the day, and a few days before. Also • Tags with your own names and colors • One photo per date • Home screen widget • 5 color themes • Export, import, and iCloud sync All core features are free. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.musuby.jp/hinarabe-privacy/
Screenshots
Verdict
The clearest difference is ads: 何日経った? at none against Day Count's shown. Day Count's advantage is update cadence (every 2 weeks vs every 16 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
何日経った? ships an update every 16 months, Day Count every 2 weeks. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.
| Parameter | 何日経った? | Day Count |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 16 months | Every 2 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Devices | iPhone | iPhone |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 4 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | KAZUKI KUBO | MASASHI YOSHIDA |
In-app purchases
何日経った?
No in-app purchases
Day Count
No in-app purchases









