肝吉くん - 飲み方を、自分で見つける

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Everyone
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About this app

Drinking every day has become the norm.

I don't want to quit. But I'm a little worried about whether this is okay...

"Kankichi-kun" is a health management app for people who want to enjoy both alcohol and their health to the fullest.

It doesn't force answers on you.

By observing your drinking and physical condition, it gently supports you in finding your own balance.

Please note that this app is a record-keeping tool to support self-management and does not perform medical acts (diagnosis, treatment, or prevention).

No negativity, no judgment.

It supports you with affirmation on both drinking days and rest days.

"Quitting" isn't the only answer—it's based on the idea that everyone has their own way of drinking (harm reduction).

*This app does not encourage drinking. Please use it within reasonable limits according to your physical condition and circumstances.

▼ 1. Start by recording

Before thinking "I have to change," you can start by "knowing."

■ See Your Consumption in Numbers
Beer, highball, wine, sake, shochu… Regardless of the type, the amount of pure alcohol (g) is used for consistent visualization. Records can be viewed in a list, and adjustments, additions, and deletions can be easily made later. Accurate records allow you to correctly understand your drinking habits.

■ Quick Recording with Barcodes
Simply scan the barcode of your alcohol with your camera. The product name, volume, and alcohol content are automatically entered, and you can record with a single tap. You can register products that aren't yet listed, and if desired, share them with other users to build a shared product list.

■ See Your Liver's Hard Work
When you record your alcohol consumption, an animation plays showing your liver (Kankichi-kun) breaking down the alcohol on a conveyor belt. It also shows how many hours it will take for the alcohol to leave your system. Seeing your liver diligently working every day will make you want to take better care of it.

■ Track Your Health and Mood Together
You can rate your sleep, health, mood, motivation, and confidence on a 5-star scale. You can add as many free-form notes as you like per day.

■ Weight and Body Fat
Record your height, weight, body fat, and BMI. You can also track the correlation with your alcohol consumption.

■ Health Checkup Values
Record AST, ALT, γ-GTP, and HbA1c, and track their trends in graphs. You can monitor the results of adjusting your drinking habits through changes in the numbers.

■ Non-Alcoholic Beverage Support
A selection of non-alcoholic beverages is available. This expands the range of days you can limit your alcohol intake.

▼ 2. Your Patterns Become Clear
As your records accumulate, your own unique patterns will emerge.

■ Notice the Correlation Between Drinking and Physical Condition
You'll start to see your own patterns, such as "I feel good the morning after I don't drink" or "I feel sluggish the day after exceeding a certain amount."

■ Review with Graphs
Check your alcohol consumption trends weekly, monthly, and yearly. You can see your own pace in numbers.

■ Reviewing the Month with a Calendar
The calendar displays days you drank and days you rested with emojis, and the amount of pure alcohol consumed each day is shown numerically. The amount is indicated by three colors: green, yellow, and red. You can review not only days you drank too much, but also your efforts on rest days and days you drank less, all on a single screen for the entire month.

■ Seeing Your Rhythm in the Last 14 Days
Understand the balance between drinking and resting your alcohol over the past two weeks. It's okay not to be perfect—even with ups and downs, you can see your rhythm.

▼ 3. When You Want to Change Yourself, Take on a Challenge
If you feel like you want to change yourself, you can freely choose from four types of challenges.

■ Every Other Day Challenge — Rest the Day After Drinking
Alternate drinking days and rest days every other day. There's also a system where you can use coins to "rescue" those days when you really want to drink.

■ Custom Rest Day Challenge — Set Your Own Goals
Set goals that suit your own pace, such as "Rest from drinking X days a week." You can also specify which days of the week you want to continue.

■ Reduced Alcohol Challenge — Gradually Reduce Your Weekly Amount
A challenge where you set a weekly goal for your pure alcohol intake and gradually reduce it without overdoing it. Goals are automatically suggested based on your recent records. Even if you have a difficult week, we'll celebrate your "completion" if you continue until the end.

■ Weight Challenge — Towards Your Target Weight
Set a target weight and track your progress with daily records. You can continue without overexerting yourself by taking breaks with the cheat day pass.

■ Kimokichi-kun Gently Supports You
The character provides feedback based on your physical condition and efforts. You might even receive a letter from Kimokichi-kun at milestones.

■ "Help Me, Kimokichi-kun!" When You Suddenly Want to Drink
When you suddenly feel like drinking, you can recall the "reasons you want to change" and "the person you want to become" that you wrote beforehand with the push of a button. It's a system that supports you with your own words, rather than being stopped by someone else.

■ Celebrate Your Efforts with Fireworks
Fireworks are launched at milestones such as consecutive days and weekly achievements. Let's celebrate small achievements together.

▼ 4. Premium Beta (Currently Free to Try)

For those whose records have grown, we are offering a deeper review as Premium Beta. It is free during the beta period and you will not be automatically charged.

■ Discovery Tab — Compare with Your Past Self
Displays the trend of your weekly, monthly, and yearly alcohol consumption overlaid with your past self. You can also review rankings of "periods of moderate drinking" and "periods of heavy drinking," as well as the relationship between the amount you drank and your physical condition and test results the next morning.

■ Last Night's Condition — A Night's Timeline of Drinking
Displays an assessment of the previous day's drinking and breakdown, overlaid with sleep and heart rate data imported from Health Connect. You can review at a glance what happened in your body the night you drank the next morning.

■ Health Connect Integration — Import Body Data
You can import sleep, heart rate, weight, etc. from Health Connect. The weight data you import can be used directly for weight challenges.

We are also considering AI-powered insights and hints for future features.

*Future features are still in the planning stages, so content and release dates may change.

▼ All Features Free & No Ads

All currently available features are free to use. No ads are displayed.

Premium features are also available for free during the beta period.

▼ Recommended for:

* Those who want both alcohol and health.

* Those who drink almost every night and are starting to worry about it.

* Those who like alcohol but are concerned about their health checkup results.

* Those who want to properly understand their alcohol consumption.

* Those looking for a way to manage their drinking without abstaining completely.

* Those who prefer to find their own pace rather than being told what to do.

▼ About Data (Privacy Considerations)

Major data such as drinking records are stored on your device in principle.

Health data imported from Health Connect is also stored only on your device and is not transmitted externally.

Please use your device's backup function before changing devices or deleting the app. Please note that we collect anonymous usage data, such as screen transitions and button operations, for the purpose of improving the app (this does not include information such as alcohol consumption or personally identifiable information). You can turn this off at any time from the settings screen.

▼ Precautions (Safety and Laws)
• This app does not perform medical procedures or make diagnoses. If you have any health concerns, please consult a doctor or other medical professional.
• Drinking alcohol is prohibited by law for those under 20 years of age. Never drink and drive.
For those who have made daily drinking a habit. An app that helps you recognize your own patterns by recording your drinking, physical condition, and weight. Four types of challenges and support from Kankichi-kun are also available for free and ad-free.
Updated on
Oct 14, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • This app may collect these data types
    App activity, App info and performance, and Device or other IDs
  • Data is encrypted in transit
  • Data can’t be deleted

What’s new

いつも肝吉くんをご利用いただきありがとうございます。

【新機能】
- 週の始まりを月曜日・日曜日から選べるようになりました
- 自由入力で、度数・1杯の容量・杯数から純アルコール量を計算して記録できるようになりました

【改善】
- ヘルスコネクト取り込みの保存の仕組みを作り直し、削除・修正の反映が速く確実になりました
- 最新の睡眠・体重・心拍を先に取り込むようにしました
- ヘルスケア連携の設定で、データの種類ごとの日数と最後のデータの日時を表で確認できます
- ホームで離れた日を選んだときの表示が速くなりました
- 設定画面の文字を大きくし、メモ画面がすぐ開くようになりました

【不具合修正】
- 朝の睡眠スコアが心拍の取り込み前に記録されてしまう問題を修正
- 月カレンダーを月曜始まりにそろえました
- 保存に失敗したとき、正しく案内するよう修正
- バーコード読み取り中にアプリを裏に回すと、カメラが動き続ける問題を修正
- 画面を戻ったときなどに一瞬固まることがある問題を修正
Content rating
Everyone
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App support

About the developer
PROSPEX CO., LTD.
info@prospex.co.jp
2-25-2, NIHOMBASHIHAMACHO CHAMPION TOWER 7F. CHUO-KU, 東京都 103-0007 Japan
+81 90-8347-7774