目標達成くん vs Challenge Log
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
目標達成くん
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目標達成くんは、自身の目標、過去に達成した目標を管理するためのアプリです。 過去に達成し終えた目標に取り組んだ期間をカレンダーで視覚的に見ることができます。 また、ホームにウィジェットを追加することもでき、目標をいつでも見ることができます。 そのため、簡単に今の自身の目標をいつでも確認することができます。 ■目標達成くんの特徴 ・達成するための目標を設定することができます ・目標を宣言した日付を確認することができます ・ホーム画面で設定した目標をいつでも確認することができます ・過去に達成した目標とその取り組んだ期間をカレンダーで管理することができます ■機能 ・目標、目標宣言日の保存機能 ・カレンダーを使用した過去の目標の管理機能 ■こんなときに役立つ! ・日々の達成したい目標をいつでも確認できるようにしたい。。 ・自分が過去にどのような目標に取り組んだのか知りたい。。 日々の達成したい目標をいつでも確認、また過去の目標とその取り組んだ期間をカレンダーで視覚的に管理したい人にはぜひおすすめのアプリです。
Challenge Log
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Small wins, every day. Challenge Log is a gentle stamp-based app for recording your daily study, work, and habits. With this major rebrand, both the look and the feel have been reborn. [Key Features] New Type x 3-Grade Stamps: Combine 6 types (Face, Hand, Aco, Hanamaru, Star, Flower) with 3 grades (Great, Good, A Little). You'll always find the right stamp for the day. Warm & Cool Themes: Switch between the warm-toned "Warm" and cool-toned "Cool" palettes to match your mood or the season. Simpler 3-Tab Home: Home / Timer / My Page — a cleaner flow. Tap any date on the calendar to open the record sheet directly. Inline Monthly Summary: Stamp and timer breakdowns are always visible on the Home screen. Onboarding for First-Timers: A five-page intro tour on first launch. Press a stamp yourself and get a feel for the app right away. Easy Login: Quick sign-in with Google or Apple. No tedious registration required. Record Without Sign-In: Save records locally without an account. Link to an account later to sync to the cloud. Larger Calendar Stamps: Each day's stamp is displayed larger, so your month's progress is easy to see at a glance. Timer Function: Set a time and focus. The screen stays on while running, with a reset confirmation dialog for peace of mind. Reminder Notifications: Set daily, weekly, monthly, or custom-interval reminders. Manage them all from Notifications on My Page. Calendar Sharing: Share challenges with friends and cheer each other on. Rename Your Stamps: Customize stamp-type names to make them your own. Reorder Your Stamps: Rearrange stamp types from Settings and put your favorites right up front. Profile Setup: Set a username and avatar to personalize your experience. No Goals, No Penalties: No quotas, no deadlines. Focus on just showing up. Daily Memos: Freely jot down notes, insights, or how you feel. App Notices: Timely updates on app news and consistency tips. Cloud Backup: Sign up to save records securely in the cloud. Migration between devices is easy. Multi-language: available in 15 languages — Japanese, English, Korean, Simplified Chinese, Traditional Chinese, German, French, Spanish, Portuguese (Brazil and Portugal), Italian, Dutch, Indonesian, Vietnamese and Thai. [Recommended if you...] - Want to quit being a "quitter" - Want a gentle-looking app you'll actually want to open - Want to build habits with friends - Dislike strict goal management or penalties - Want to try the app first without signing in - Want a theme you can switch by mood Start today — capture your "I did it" days with your favorite stamps.
Screenshots
Verdict
The clearest difference is update cadence: Challenge Log at fortnightly against 目標達成くん's every 3 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
目標達成くん ships an update every 3 months, Challenge Log fortnightly. The most recent releases landed on June 1, 2026 and August 22, 2026 respectively.
| Parameter | 目標達成くん | Challenge Log |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 14.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 24 MB | 89 MB |
| Age rating | 9+ | 4+ |
| Developer | Hayato Kitaoka | YOSHIKI KOKUBO |
In-app purchases
目標達成くん
No in-app purchases
Challenge Log
No in-app purchases








