Comparison

Hundred Day Challenge vs 100日目標チャレンジ

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

Head to head
About

Hundred Day Challenge

This app helps you build lasting habits and achieve goals through consistent, small daily actions over 100 days. Track multiple challenges simultaneously, visualize your progress, and stay motivated with visual cues and milestone rewards.

Highlights
  • Multiple challenges at once
  • Daily completion tracking
  • Progress visualization
  • Motivating main screen
  • Icon selection per challenge
  • Progress rewards
Features
Read full description

What is the 100 Day Challenge? The 100 Day Challenge helps you work consistently toward your goals and build real habits. Instead of big leaps, it's about small, daily steps that add up over 100 days and bring lasting change. Key features: • Multiple challenges at once: Start and manage different 100-day challenges in parallel (e.g., reading, sports, learning, meditation). • Daily completion: Mark your progress with just one tap – “Today done” keeps your streak alive. • Visualization: See your progress at a glance: expanded view with 100 days, checked days in green with check marks. • Motivating main screen: Personal greeting, overview of all active challenges, progress indicators, and quick selection. • Icon selection per challenge: Choose a suitable icon for each challenge. • Progress rewards: Visualize milestones and stay in the flow. • Pro version (in-app purchase): Unlock all features, remove restrictions, and get additional personalization options. Why does it work? Because small, daily actions done consistently are more effective than sporadic motivation. 100 days is short enough to stick with and long enough to form real habits. Social accountability – use it to your advantage: Share the start of your challenge on social media or with friends. Post at the beginning and after important milestones – this creates gentle social pressure that motivates you to stick with it. Others know that you have started, and you don't want to break the streak. Privacy & Sync: All data is private and stored securely in your iCloud account. There are no central servers; your challenge data belongs only to you. Tips for maximum impact: • Choose clear, specific tasks (e.g., “read for 10 minutes” instead of “read more”). • Use multiple parallel challenges, but don't overload yourself – focus helps. • Check your streak regularly to avoid setbacks and maintain motivation. Upgrade to the full version: Unlock the full power: unlimited challenges and no restrictions on the number of days. Support & feedback: Do you have any ideas or need help? Write to us directly via the app or visit our support page (link in the app). Your feedback makes the challenge better.

About

100日目標チャレンジ

Features
Read full description

このアプリは100日で何かを達成してみたい、変わりたいという目標を持っている人をサポート、後押しするアプリです。 資格試験に合格したい、ダイエットに成功したい、新しい習慣を身につけたい、100日後に違う自分と出会ってみたい、、、 どんな小さな目標でも大丈夫です!このアプリが1人でも多くの人の目標達成の役に立てばいいなと思い作りました。 【どんなアプリ?】 目標の逆算設定(バックキャスティング)という考え方を用いています、 100日間のチャレンジに当たって、基本的な進め方は次の通りです。 ①最終的な100日後の目標を設定する。 ②最終目標を達成するためのチェックポイントとなる中間目標を設定する。 ③中間目標を目指すための行動計画として、今日、今週やることを決定する。 ④毎週、中間目標ごとに振り返りを行うことで自分の成長を実感し、次の目標に向かって進むことができる。 【どんな人におすすめ?】 ・目標はあるけど、何から始めればいいかわからない ・取り組んではみたものの、三日坊主になった経験がある ・振り返りや目標管理を習慣にしたい ・資格取得・ダイエット・語学学習・スキルアップに取り組んでいる 【どんなことができる?】 ・100日間のチャレンジ設定 ・登山に見立てた合目(中間目標)による段階的な目標管理 ・日次・週次・期限付きタスクの管理 ・目標に対する達成率の表示 ・週次での振り返りとPDCAサポート ・合目ごとの自己評価と次の目標に向かうためのガイド ・ホーム画面ウィジェット対応(Small・Medium・Large) ・リマインダー通知(毎日・毎週・毎月) 利用規約(EULA):https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Hundred Day Challenge4 screens
100日目標チャレンジ4 screens

Verdict

The call

The clearest difference is update cadence: 100日目標チャレンジ at every 2 months against Hundred Day Challenge's every 9 months. 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Hundred Day Challenge sells 1 one-off in-app purchase and 100日目標チャレンジ sells 1 in-app purchase, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Hundred Day Challenge ships an update every 9 months, 100日目標チャレンジ every 2 months. The most recent releases landed on October 25, 2026 and October 20, 2026 respectively.

Scorecard1 real difference · 8 level
Hundred Day Challenge versus 100日目標チャレンジ: the parameters behind the verdict, then further details
ParameterHundred Day Challenge100日目標チャレンジ
PriceFreeFree
Rating4.7 (3 ratings) — better—
Number of ratings3 — better—
Update frequencyEvery 9 monthsEvery 2 months — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.518.0 — better
Further details — not scored
Size2 MB44 MB
Age rating4+12+
DeveloperUrs JaeggiReo Takabatake

In-app purchases

1 purchases

Hundred Day Challenge

One-time1
  • Full Version$0.99
1 purchases

100日目標チャレンジ

Subscriptions1
  • Pro 月額$3.991 Month

Questions

Is Hundred Day Challenge free?
Hundred Day Challenge is free to download, with in-app purchases available.
Is 100日目標チャレンジ free?
100日目標チャレンジ is free to download, with in-app purchases available.
Do Hundred Day Challenge or 100日目標チャレンジ have ads?
Neither Hundred Day Challenge nor 100日目標チャレンジ shows ads.
Which is updated more often, Hundred Day Challenge or 100日目標チャレンジ?
Hundred Day Challenge ships an update every 9 months, and 100日目標チャレンジ every 2 months. Most recently, Hundred Day Challenge was updated on October 25, 2026 and 100日目標チャレンジ on October 20, 2026.

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