まかせてリマインド vs When Again?
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
まかせてリマインド
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思いついたことをチャットで預けるだけ。あなた専属の相棒が、通知後も完了までやさしく残してくれるリマインダーです。 まかせてリマインドは、忘れっぽい人、先延ばししがちな人、普通のToDoアプリが続かなかった人のための、シンプルなチャット式リマインダーです。 「30分後にメール返信」 「明日9時に田中さんへ返信」 「今日の夜 ゴミ袋を出す」 こんなふうに、思いついたことをそのまま入力するだけ。登録画面でカテゴリや優先度を選ぶ必要はありません。 大事にしているのは、通知した瞬間で終わらせないこと。 通知を見ても、今すぐできないことはあります。だから、完了していないリマインダーは残し、あとから見直せるようにします。 主な機能 ・チャット式のリマインダー登録 ・「30分後」「明日9時」などの簡単な日時指定 ・通知から「完了」「10分後」「1時間後」「明日の朝」を選択 ・未完了のリマインダーを一覧で確認 ・サポーターの名前、アイコン、口調をカスタマイズ ・ローカル通知とローカル保存を中心にしたシンプルな設計 ・広告に邪魔されない体験 まかせてリマインドは、あなたを責めるアプリではありません。 覚えておくことを代わりに預かり、必要なタイミングで知らせ、終わるまでそっと支えるためのアプリです。 こんな人におすすめ ・通知を見たのに、そのまま忘れてしまう ・タスク管理アプリを開く前に面倒になってしまう ・予定や返信、買い物、家事をすぐに預けたい ・完了していないことを、既読や通知消去で失いたくない ・無機質なリマインダーより、少し頼れる相棒感がほしい 思いついたら、すぐ預ける。 今できなくても、あとでまた知らせます。 完了するまで、相棒がそっと見守ります。
When Again?
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"When did I last do that?" Bike oil changes, haircuts, salon visits, AC cleaning, doctor appointments, pet care — things you do again and again, but once enough time passes, you can't remember when you last did them. When Again? clears up that little everyday question with a single tap. Just log the date. The app automatically counts the days since you last did it, learns your average interval from your own records, and gives you a heads-up when it's about time. ■ Who it's for ・People who forget when their bike or car was last serviced ・Anyone managing regular salon, hair, or nail appointments ・People tracking doctor visits, medication, or health habits ・Anyone who wants to stop thinking "wow, it's already been a while" ・People who want to start right away — no account needed ■ Key features ◎ See the days at a glance Your items line up on the home screen, each with a badge showing how many days since you last did it. What needs doing now is obvious. ◎ "About time" reminders, automatically The app learns your average interval from your records, gathers the items coming due at the top of the home screen, and reminds you with notifications too. ◎ Track anything Use the preset categories or add your own with custom icons and colors. From bike maintenance to beauty to health — manage it all in one app. ◎ Photos, tags, amounts, and notes It's more than a date log. Add up to 5 photos, tags, the amount you spent, and notes to each record — so you can look back on what state it was in last time and how much it cost. ◎ Detailed history and stats The detail screen shows stats like "since last time," "average interval," and totals, plus a month-by-month timeline. ◎ Search Search across notes, tags, and item names to find past records instantly. ◎ Easy backup Save and restore all your records to a file (photos included). CSV export is also supported. ◎ Dark mode Choose system, light, or dark. ■ Privacy first All your records are stored only on your device. No account, no login. We never send your records to a server — so you can start with peace of mind. ■ Pricing The core features are free. Some premium features are available via a one-time in-app purchase. Leave your everyday "when was that again?" to When Again?
Screenshots
Verdict
The clearest difference is in-app purchases: まかせてリマインド at none against When Again?'s 1. まかせてリマインド also leads on ads (none vs shown). When Again?'s advantage is update cadence (daily vs every 3 days). On price, 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. When Again? sells 1 one-off in-app purchase. まかせてリマインド asks for nothing beyond the download.
まかせてリマインド ships an update every 3 days, When Again? daily. The most recent releases landed on October 5, 2026 and October 8, 2026 respectively.
| Parameter | まかせてリマインド | When Again? |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 days | Daily — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Devices | iPhone | iPhone |
| Requires iOS | 17.0 | 16.4 — better |
| Further details — not scored | ||
| Size | 12 MB | 59 MB |
| Age rating | 4+ | 4+ |
| Developer | Masaya Sugino | Masamune Hiroiwa |
In-app purchases
まかせてリマインド
No in-app purchases
When Again?
- プレミアム(買い切り)$4.99









