ツヅケル vs When Again?
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ツヅケル
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習慣管理・習慣化を「続く仕組み」に変えるアプリです。 達成率・連続記録・レベルアップ・カレンダー・統計機能で、毎日の行動を楽しく可視化。 筋トレ、勉強、早起き、読書、瞑想、日記、水分補給など、あらゆる習慣を1タップで簡単に記録できます。 「続けたいのに続かない」 「三日坊主で終わってしまう」 「モチベーションが続かない」 そんな悩みを解決するために作られた、ゲーム感覚の習慣管理・タスク管理アプリです。 --- ■ 主な機能 ・今日の達成率を自動計算(リング表示) ・習慣ごとの連続継続日数と最長記録を自動保存 ・行動するほどレベルアップして成長を実感 ・月間カレンダーで継続状況を色で表示 ・曜日別/月別の達成率を統計で分析 ・習慣の登録・編集・チェックはすべてワンタップ ・シンプルで迷わないデザイン --- ■ このアプリが続く理由 このアプリは「意志の力」ではなく「仕組み」で続けられる設計です。 ・数字で成果が見える ・記録が積み上がる ・レベルが上がる ・連続記録が伸びる これらの要素が、自然と「今日もやろう」という気持ちを作ります。 続けるほどデータが増え、やめるのがもったいなくなる。 それが、このアプリ最大の特徴です。 --- ■ こんな方におすすめ ・習慣化アプリが続かなかった ・三日坊主を卒業したい ・筋トレや勉強を習慣にしたい ・ルーティンを整えたい ・タスク管理が苦手 ・自己管理をシンプルにしたい ・達成感が欲しい ・ゲーム感覚で成長したい --- ■ 対応している習慣例 ・筋トレ / ストレッチ / 運動 ・勉強 / 読書 / 英語学習 ・早起き / 睡眠管理 ・日記 / 瞑想 / マインドフルネス ・水分補給 / 健康管理 ・禁酒 / 節約 / デジタルデトックス 自由にカスタマイズできます。 --- 毎日たった1タップ。 それだけで、あなたの行動は記録され、積み上がり、成長に変わります。 今日の小さな一歩が、未来の大きな変化になります。 今すぐ、新しい習慣を始めましょう。
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 update cadence: When Again? at daily against ツヅケル's every 2 days. When Again? also leads on iOS requirement (16.4 vs 26.2). On price, ads, in-app purchases and device support 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. ツヅケル sells 1 one-off in-app purchase and When Again? sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
ツヅケル ships an update every 2 days, When Again? daily. Both last shipped on October 25, 2026.
| Parameter | ツヅケル | When Again? |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 days | Daily — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Devices | iPhone | iPhone |
| Requires iOS | 26.2 | 16.4 — better |
| Further details — not scored | ||
| Size | 6 MB | 59 MB |
| Age rating | 4+ | 4+ |
| Developer | daiki ozawa | Masamune Hiroiwa |
In-app purchases
ツヅケル
- プレミアムプラン$2.99
When Again?
- プレミアム(買い切り)$4.99









