Timebook vs ThisDay
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Timebook
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Timebook is a time tracker that records how you spend your day, turns it into habits you can keep, and helps you discover the patterns hidden inside it. No separate check-off: log what you set as a habit, and today's progress fills automatically. Whether you want to build better habits, stay focused on deep work, or fix your sleep schedule, Timebook helps you see what your days really look like — and shape them on purpose. Skip the complicated forms. Start and stop activities with a single tap. The more you log, the better Timebook understands your day - and surfaces insights that lead to better habits. ■ Habits your records keep for you • Today's habits on the home screen — tap a record-based habit to start logging • Set what counts: simply logging it, or a duration, amount, or count goal • Habits tied to a record are judged automatically, with no separate check-off • Streaks and a footprint board show every day you kept • Rest days and skipped days never count as failures ■ Challenges, from 7 days to 100 • Put a window around a habit you already keep: 7, 21, 30, 60, or 100 days • A different badge for each length, and a special trophy when three or more habits started together all succeed • Save and share the result as a badge image ■ One-tap time tracking • Tap a quick-action button to start logging in a second • Watch your current session progress on a circular timer — perfect for Pomodoro-style focus sessions • Edit start and stop times freely • Capture moments with timestamped notes ■ Two ways to revisit your day • Timeline: replay your day moment by moment • Grid: see your whole day as a colorful mosaic ■ Heatmaps that reveal your patterns • Activity frequency by day of week and time of day • Category-level breakdown of where your time goes • A clear picture of what you actually do, hour by hour ■ Routine templates to plan the day ahead • Design your daily plan as a reusable template • Separate templates for weekdays, weekends, and other contexts • Review your routines and see how your days align over time ■ In-depth sleep analysis • Bedtime and wake-time patterns over time • Sleep duration and consistency by day of week ■ More • Dark mode • Available in 13 languages Start tracking with Timebook and become someone who spends time on what matters. Terms of Use: https://timebook.kr/terms
ThisDay
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やりたいことに集中できる毎日をつくる。 「今日、何しよう?」そう考えるたびに時間が過ぎていく。 ThisDayは、あなたの1日の隙間を自動で見つけてくれる時間管理アプリです。 毎日の固定スケジュール(仕事・食事・睡眠)を登録するだけで、その合間にある自由時間を自動で計算。あとはその枠に「何をするか」を1つ書くだけ。 ■ こんな人に ・ToDoリストを作るけど、結局何もこなせない ・スキマ時間があるのに、何をすべきか迷ってしまう ・毎日のルーティンはあるが、自由時間の使い方が曖昧になっている ■ シンプルな3ステップ 1. 起床・就寝時刻と、毎日の固定予定を設定 2. 固定予定の合間の空き枠が自動で表示される 3. 気になる枠をタップして「何をするか」を1つ書くだけ ■ 特徴 ・1枠に1タスク。シンプルだから続く ・昨日・今日・明日の3日間だけを管理。週や月の計画は要らない ・固定予定の時間をその日だけ変更できる(打ち合わせが伸びたときも安心) ・毎朝の通知でリマインド。時刻は自由に設定可能 ・データはすべてデバイス内に保存。アカウント不要・ネット不要 開いたらすぐ今日が見える。今日の予定を、今日こなす。
Screenshots
Verdict
The clearest difference is in-app purchases: ThisDay at none against Timebook's 2. Timebook's advantage is update cadence (every 4 days vs every 6 weeks) and iOS requirement (15.5 vs 18.0). On price, ads 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. Timebook sells 2 in-app purchases, starting at $5.49 per month. ThisDay asks for nothing beyond the download.
Timebook ships an update every 4 days, ThisDay every 6 weeks. The most recent releases landed on October 28, 2026 and October 8, 2026 respectively.
| Parameter | Timebook | ThisDay |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 days — better | Every 6 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.5 — better | 18.0 |
| Further details — not scored | ||
| Size | 151 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Youngsoo Choe | Riku Higashimura |
In-app purchases
Timebook
- Timebook Plus Monthly$5.491 Month
- Timebook Plus Yearly$54.991 Year
ThisDay
No in-app purchases









