Glucose Challenge : Carb Log
Kengo Nomura Health & Fitness iPhoneiPadiPod touch
Glucose Challenge : Carb Log is a free Health & Fitness app for iPhone and iPad by Kengo Nomura. Requires iOS 15.1. Updated September 23, 2026.
- Price
- Free
- on the App Store
- Size
- 59 MB
- Age 12+
- Updated
- Sep 23
- 2026 · viOS App 1.0.6
Screenshots
About Glucose Challenge : Carb Log
Get your daily carb target from your goal weight. Build blood-sugar-care habits — no needles required. Understanding blood sugar has traditionally meant wearing a sensor on your arm. Glucose Challenge helps you build lasting habits through your daily meals and actions — no sensor needed. ■ Start with your goal weight Enter your current and goal weight, and we'll suggest a daily carb target that fits you (Gentle 130g / Recommended 100g / Strict 70g). If you have a larger gap to close, we suggest starting with a sustainable target and stepping down after a month. Strict limits mean nothing if you can't keep them up. That target becomes the goal line on your daily graph — so you always know how much you have left today. ■ Built on data from 300+ participants Since 2020, over 300 people have worn a medical glucose sensor (FreeStyle Libre) while logging their meals and daily actions. That data shows, in numbers, which habits raise blood sugar and which ones help prevent spikes. A healthcare professional reviews that data and turns it into the actions you should take today. ■ Blood sugar isn't only about food Sleep, exercise, stress — all of it affects your blood sugar. So the habits you receive go beyond what's on your plate. ■ Two things to do each day 【1. Photograph your meal】 One photo is all it takes. AI estimates the carbs — no typing, no calculating. Every entry stacks up on your graph, so you can see at a glance whether you've passed your target. 【2. Check off today's actions】 "Vegetables first." "A short walk after eating." Habits arrive each day. Just tap whether you did it or not. ■ These two become your scores Your logged carbs and your habit completion rate feed into your Glycation Score and Spike Score. Your estimated HbA1c and 5-year diabetes risk appear on the dashboard too. No needles — and you can still see where you stand, in numbers. That's what 300+ participants' real data makes possible. ■ The longer you go, the further you get Your avatar evolves from Lv1 to Lv3 as your completion rate rises, and each level unlocks the next stage of habits. You start where you are, and build from there. ■ No more wondering what to eat Pick your goal (clear skin, weight care, anti-aging, wellness, diabetes prevention) and your situation (weekday lunch, dinner), and you'll get specific options for convenience stores, dining out, and home cooking. Repeat it daily, and eventually you'll choose well without opening the app. That's the goal of this program. ■ Also included ・Daily and weekly weight graphs with a goal line ・Carb breakdown per meal, plus advice to help prevent spikes 【Who this is for】 ・You spend on skincare, but your skin still isn't where you want it ・You've tried diets before and gained it back ・Your blood sugar or HbA1c came up at your last checkup ・You're busy, and detailed logging or calorie counting never sticks 【Subscription plans】 A 3-day free trial gives you access to everything. ・Basic (¥1,100/mo): Unlimited AI photo analysis, daily habits, dashboard ・Standard (¥1,650/mo): Basic plus meal programs for weight care, beauty, anti-aging, and wellness ・Premium (¥2,200/mo): Everything, including the healthcare- supervised diabetes-prevention program and 5-year risk insights *Results vary by individual. No outcome is guaranteed. 【Medical disclaimer】 Estimated HbA1c, diabetes risk scores, and AI meal analysis in this app are simulations based on the data you enter. This app is not a medical device and does not provide medical diagnosis or definitive test results. For accurate measurement or any health concerns, please consult a physician. Terms: https://health-app-policy.quiet-time.jp/kiyaku Privacy: https://health-app-policy.quiet-time.jp
What’s new
Version iOS App 1.0.6 · Updated September 23, 2026
・Build your own carb plan from your goal weight We calculate your BMI from your height and weight, then suggest a daily carb target, a timeline, and step-by-step stages If a goal could harm your health, we suggest a safer one instead ・More detailed low-carb recipes Based on your carb intake over the last 7 days, we suggest specific options for convenience stores, eating out, and home cooking ・The rice or noodle portion you select now adjusts the carb estimate ・Clearer results, including a rice-cup equivalent for your carbs ・Fixed an issue where some meals were saved to the wrong date depending on the time of day ・Other display and usability improvements
App privacy
The developer, Kengo Nomura, reported these privacy practices to Apple.
Data Linked to You
The following data, which may be collected and linked to your identity, may be used for the following purposes:
- Health & Fitness: Health
- Financial Info: Payment Info
- Contact Info: Email Address
- Identifiers: User ID
Used for: Product Personalization, App Functionality
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Usage Data: Product Interaction
Used for: App Functionality
Alternatives to Glucose Challenge : Carb Log
Looking for apps like Glucose Challenge : Carb Log? Here are 6 similar apps on the App Store. The highest rated is Nuvora: GLP-1 Shot Tracker (5.0/5), and all 6 are free to download.
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| Glucose Challenge : Carb Log | – | Free | September 23, 2026 | |
| カロリセット | – | Free | Jan 21, 2026 | Compare |
| おやすみルーティン - 就寝準備チェック | – | Free | Oct 15, 2026 | Compare |
| kesano — Morning Body Check | – | Free | Sep 7, 2026 | Compare |
| Nuvora: GLP-1 Shot Tracker | 5.0 / 5 (4) | Free | Oct 21, 2026 | Compare |
| MyBodyNote: Symptom Diary | – | Free | Oct 19, 2026 | Compare |
| Mely - 気分・体調・生理・気圧でみるこころと体の記録 | – | Free | Oct 1, 2026 | Compare |