Comparison

TaskFlow vs SixDo

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

TaskFlow

Features
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ToDoリストとガントチャートを、ひとつのアプリに。 TaskFlowは、今日やることの管理と、数週間先まで見通すプロジェクト計画を、アプリを切り替えずに行き来できるタスク管理アプリです。広告なし、アカウント登録なし、データは端末の中だけに保存します。 ■ こんな方におすすめ ・日々のToDoを整理したい方 ・プロジェクトの進捗を可視化したい方 ・複数のアプリを使い分けるのに疲れた方 ・シンプルで美しい日本語UIを求めている方 ■ 主な機能 【ToDo管理】 ・ワンタップで素早くタスク追加 ・ラベル別にタスクを自動分類 ・優先度・期限・ラベル・作成日でソート ・インボックス(未分類)で後から整理 【タイムライン(ガントチャート)】 ・日・週・月の3段階ズーム切替 ・ラベル別にスイムレーン表示 ・タスク間の依存関係を破線矢印で可視化 ・今日の位置へワンタップでジャンプ ・マイルストーンを菱形で強調表示 【カレンダー】 ・月間カレンダーで予定を俯瞰 ・タスクバーを期間表示 ・ラベルフィルタで絞り込み ・マイルストーンも直接表示 【ラベルシステム】 ・色とアイコン(99種)の組み合わせで自由にカスタマイズ ・仕事、家事、健康、学習などカテゴリ別に整理 ・並び替えた順番は、すべての画面に反映 【サブタスクと依存関係】 ・タスクを階層的に分解 ・分解テンプレートでよく使う手順を再利用 ・「買い物」「持ち物の準備」などのテンプレートを収録 ・サブタスクを独立タスクに昇格、またはその逆も可能 ・前提タスクの日付変更が自動で後続タスクに反映 【繰り返しタスク】 ・毎日・毎週・毎月の繰り返し ・完了で次回分を自動生成 【外部アプリやリンクからの追加】 ・他のアプリやリンクから送られた「タスク作成」に対応 ・タイトル・期限・サブタスクが入力された状態で確認画面が開きます ・内容を確かめてから保存できます(自動では保存されません) 【メモ帳】 ・アイデアや参考情報を素早くメモ ・自動保存で入力の手間なし 【振り返りダッシュボード】 ・今週の完了タスク数 ・ラベル別の達成状況 ・期限超過の把握 【その他】 ・ゴミ箱からタスクを復元 ・毎日のリマインダー通知 ・JSONエクスポート(バックアップ用) ・CSVエクスポート(スプレッドシート用) ■ プライバシー ・データは端末ローカルに保存 ・アカウント登録不要 ・広告なし ・アプリが自動でデータを外部へ送信することはありません(共有・エクスポートはご自身の操作のときだけ) 日々のタスクから長期のプロジェクトまで、 TaskFlowでスッキリ整理しましょう。

About

SixDo

Features
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You open your list and twenty things are already on it. By the time you have decided where to start, you no longer want to. SixDo only lets you write six. There is no seventh line, so you choose before you write. No ads. Free. ■ What the Ivy Lee Method is A hundred-year-old habit, from a consultant named Ivy Lee in 1918. 1. At the end of the day, write down up to six things for tomorrow 2. Put them in order of importance 3. The next day, work down the list 4. Whatever is left moves to the following day 5. Repeat That is all of it. Deciding less in the morning is the point. ■ What SixDo does ・No ads, at all  Not in the free version either. Nothing here competes for your attention. ・Six is a ceiling, not a quota  Three things on a three-thing day is fine. No filler. ・Edit in place  Tap a task to change it. No separate screen to go to. ・Order without obligation  Top to bottom is the idea, but finish whatever you can. ・Unfinished work moves on  It carries to the next day by itself. You can turn that off. ・Notifications only when there is a reason  In the evening, only if tomorrow is still empty. In the morning, only if something is left. Not a fixed alarm. Each can be turned off. ・Your records survive a new phone  Export and import, and it is included in your iCloud backup. ・Widget … your next task on the Home Screen  Put "The one now" on your Home Screen. Free. ・Eight accent colors (free) ・Light, dark, or match your device ・Look back at what you finished  A year of it, on a calendar. Free. ■ Who it suits ・You have too much to do and lose the morning deciding where to start ・You installed a to-do app once, and it had too much in it ・You are tired of apps full of advertising ・You want the first hour of the day to be easier ■ SixDo Pro (one-time purchase, optional) Free is not a trial. Keeping to six a day works fully without paying, and there are no ads either way. Pro is for people who want more from it. ・Separate work and personal … six each, and they never mix ・Someday … park what you cannot move on yet, with a note ・Insights … your streak, your best days, and the work/personal split ・Weekly review … a Sunday evening note on how many you finished ・Widgets … today’s six, this month, and the Lock Screen ・Timed reminders … pick a date and time for each task Not a subscription. Buy once, keep it. ■ Privacy Nothing is collected. What you type stays on your iPhone. There is no account and no sign-in. Six things, in order, from the top. That is enough to change a day.

Screenshots

TaskFlow4 screens
SixDo4 screens

Verdict

The call

The clearest difference is in-app purchases: TaskFlow at none against SixDo's 1. SixDo's advantage is iOS requirement (16.0 vs 26.0). On price, update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. SixDo sells 1 one-off in-app purchase. TaskFlow asks for nothing beyond the download.

UpkeepUpdate frequency

TaskFlow ships an update every 3 weeks, SixDo every 4 weeks. The most recent releases landed on November 5, 2026 and November 10, 2026 respectively.

Scorecard2 real differences · 4 level
TaskFlow versus SixDo: the parameters behind the verdict, then further details
ParameterTaskFlowSixDo
PriceFreeFree
Update frequencyEvery 3 weeks — betterEvery 4 weeks
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPad — betteriPhone
Requires iOS26.016.0 — better
Further details — not scored
Size3 MB32 MB
Age rating4+4+
DeveloperYusuke Nakashimamami hara

In-app purchases

None

TaskFlow

No in-app purchases

1 purchases

SixDo

One-time1
  • SixDo Pro$3.99

Questions

Is TaskFlow free?
TaskFlow is free to download, with no in-app purchases.
Is SixDo free?
SixDo is free to download, with in-app purchases available.
Do TaskFlow or SixDo have ads?
Neither TaskFlow nor SixDo shows ads.
Which is updated more often, TaskFlow or SixDo?
TaskFlow ships an update every 3 weeks, and SixDo every 4 weeks. Most recently, TaskFlow was updated on November 5, 2026 and SixDo on November 10, 2026.

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