Comparison

Glucose Challenge vs Nemio

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

Head to head
About

Glucose Challenge

This app helps you manage blood sugar through daily meals and actions without needing a sensor. It suggests personalized carb targets based on your weight goals and provides actionable habits derived from real user data to help prevent blood sugar spikes.

Highlights
  • Personalized daily carb targets
  • AI-powered meal carb estimation
  • Daily habit tracking
  • Glycation and Spike Score
  • Estimated HbA1c and diabetes risk
  • Meal suggestions based on goals
  • Weight and carb graphs
Features
Read full description

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

About

Nemio

Features
Read full description

ネミオは、毎日の気分や感情をタップひとつで記録できる、日本語の「なんとなく」に寄り添うシンプルな気分ノート・日記アプリです。 ■ 書くのが苦手でも続けられる気分記録 文章を書く日記が続かなかった方でも、気分アイコンをタップするだけで簡単に記録できます。嬉しい日、疲れた日、なんとなく気分が乗らない日も、そのまま残せます。 記録を強制する通知やペナルティはありません。自分のペースで続けられる、やさしい感情記録アプリです。 ■ 「なんとなく」や「ちょっと疲れた」を残す 気分の選択肢は、日本語特有の微妙な感情表現を大切にしています。無理にポジティブに変換したり、良い・悪いの二択で判断したりしません。 カテゴリーや表示ラベルは自由に変更でき、自分だけの気分日記として使えます。 ■ 気分に寄り添うひとことメッセージ 気分アイコンをタップすると、短いひとことが表示されます。励ましたり評価したりするのではなく、ただ気持ちを受け止める言葉を用意しています。 ■ カレンダーと統計で自然に振り返り 月間カレンダーでは毎日の気分を色で確認できます。年間ビューでは1年分の気分の変化をグリッド表示し、季節ごとの傾向や自分の変化を振り返れます。 気分の記録だけでなく、その日に表示されたひとことも一緒に読み返せます。 ■ 1年前の今日を振り返る 1年前の同じ日に記録があれば、その日の気分とメッセージを表示します。過去の自分をそっと振り返ることができます。 サーバー通信は行わず、すべてのデータは端末内で管理します。 ■ 自分好みにカスタマイズ 気分アイコンは複数のデザインから選択できます。活動タグを追加して、その時何をしていた時の気分だったかも一緒に記録できます。 ■ プライバシーを大切にした気分日記 ・会員登録、ログイン不要 ・データは端末内のみ保存 ・サーバーへの送信なし ・パスワードロック対応 ■ 安心して機種変更 バックアップファイルの書き出し・読み込みに対応。アカウント作成なしでもデータを引き継げます。 比べない、急かさない、記録できない日があっても責めない。 ネミオは、毎日の気分と感情をそっと残すためのシンプルな気分ノート・日記アプリです。

Screenshots

Glucose Challenge4 screens
Nemio4 screens

Verdict

The call

The clearest difference is in-app purchases: Nemio at none against Glucose Challenge's 5. Nemio also leads on update cadence (daily vs every 2 weeks) and iOS requirement (13.0 vs 15.1). Glucose Challenge's advantage is ads (none vs shown). On price 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. Glucose Challenge sells 5 in-app purchases, starting at $5.99 per month. Nemio asks for nothing beyond the download.

UpkeepUpdate frequency

Glucose Challenge ships an update every 2 weeks, Nemio daily. The most recent releases landed on October 31, 2026 and October 29, 2026 respectively.

Scorecard4 real differences · 4 level
Glucose Challenge versus Nemio: the parameters behind the verdict, then further details
ParameterGlucose ChallengeNemio
PriceFreeFree
Positive reviews100.0% of reviews—
Update frequencyEvery 2 weeksDaily — better
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.113.0 — better
Further details — not scored
Size59 MB25 MB
Age rating12+4+
DeveloperKengo NomuraPBS.Inc

In-app purchases

5 purchases

Glucose Challenge

Subscriptions5
  • Basic Plan3 Days trial$5.991 Month
  • Premium Coupon 50$5.991 Month
  • Standard Plan3 Days trial$9.991 Month
Show 2 more
  • Premium Coupon 25$9.991 Month
  • Premium Plan3 Days trial$11.991 Month
None

Nemio

No in-app purchases

Questions

Is Glucose Challenge free?
Glucose Challenge is free to download, with in-app purchases available.
Is Nemio free?
Nemio is free to download, with no in-app purchases.
Do Glucose Challenge or Nemio have ads?
Nemio shows ads; Glucose Challenge does not.
Which is updated more often, Glucose Challenge or Nemio?
Glucose Challenge ships an update every 2 weeks, and Nemio daily. Most recently, Glucose Challenge was updated on October 31, 2026 and Nemio on October 29, 2026.

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