Comparison

Napplee vs やせるぞう

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

Head to head
About

Napplee

Features
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Napplee (hereinafter referred to as "this application") uses separately sold baby sensors Baby Ai series and IBUKI series (hereinafter referred to as "dedicated baby sensors") to detect the decrease in respiration estimated from the body movements of sleeping infants. If you do, you will be notified by an alert sound. ※Average breathing rate, temperature and humidity are not displayed with this app alone. A dedicated baby sensor (sold separately) is required. When wirelessly connecting the special baby sensor and iPad/iPhone, please bring the sensor and iPad/iPhone closer together. ※Body motion sensor IBUKI can be connected to this application. When connecting IBUKI, some models cannot use the temperature/humidity display function and the heat stroke/flu alert function. (Example: Body motion sensor IBUKI ONE: Not compatible, New model body motion sensor IBUKI 1.5: Compatible) Please read the following main functions, operating environment, and precautions before using this product correctly. <Main functions> ・You can record average respiration data for up to 1000 days. <Function linked with dedicated baby sensor> ・ Every few seconds, the baby's average breathing rate/minute, body movement, attention, and stability during sleep are monitored and automatically recorded every 30 seconds. ・An alert will notify you when your baby's respiratory body movements per minute are less than 6 times or when it is undetected for 25 seconds. ・Monitor and record the sleeping conditions of up to 2 infants with this app. In addition, the following settings and displays can be made from the menu screen. (For details, please refer to the "Instruction Manual for Baby Sensor App Napplee" in this app.) ・ The data recorded during sleep can be displayed in a graph. ・You can be notified by an alert sound when the arbitrarily set temperature and humidity are outside the set range. ・ If the temperature and humidity in the room are at risk of heat stroke or influenza, you can be notified by an alert sound. <Operating environment> ・iOS11 or higher, compatible with iPhone/iPad ・The dedicated body motion sensors that can work with this application are body motion sensors that have been sold by LDS in the past, such as IBUKI ONE, Baby Ai, Baby Ai Med, Mamorin Baby, Hapisapo Baby Sensor, Nursing Care Log Med. <Notes> ・Please do not use this application for preventive, diagnostic or therapeutic purposes. ・This app cannot be used alone. A dedicated motion sensor (sold separately) is required. ・Please consider the average breathing rate and respiratory body movement intensity graph displayed in this app as a reference only. ・Please be sure to follow the procedures and precautions written in the "Instruction Manual for Baby Sensor App Napplee" in this app. Please note that we are not responsible for any unsafe events that occur due to deviated procedures.

About

やせるぞう

Features
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やせるぞうは、体重管理・体脂肪率・歩数を、かんたんに続けられるダイエット&歩数計アプリです。 万歩計・歩数計としても使え、ウォーキングや散歩、日々の運動の記録も手軽に管理できます。 ヘルスケア連携にも対応し、歩数データの自動取得が可能です。 カレンダーやグラフで日々の変化を見やすく振り返ることができ、 食事やカロリーのメモ、気分や体調の記録もまとめて確認できます。 かわいいぞうキャラの育成や着せ替えを楽しみながら、無理なく習慣化できます。 ■こんな人におすすめ ・体重をシンプルに記録したい ・ダイエットをやさしく続けたい ・歩数やウォーキング、散歩の記録もまとめて見たい ・万歩計・歩数計アプリを探している ・食事やカロリーを軽くメモしたい ・気分や体調もあわせて記録したい ・トレーニングや運動の記録もゆるく残したい ・難しい機能より、続けやすさを重視したい ■主な機能 ・体重・体脂肪率の記録 ・歩数の確認(万歩計・歩数計として利用可能) ・ウォーキング・散歩・運動・トレーニングの記録 ・ヘルスケア連携による歩数の自動取得 ・カレンダーでの記録一覧表示 ・グラフによる体重・歩数の変化の可視化 ・食事・カロリーのメモ ・気分・体調の記録 ・記録の見返し ・キャラクターの育成・着せ替え ・毎日続けたくなるキャラクター演出 ・見やすくやさしいデザイン やせるぞうと一緒に、今日の一歩を積み重ねていきましょう。

Screenshots

Napplee4 screens
やせるぞう4 screens

Verdict

The call

The clearest difference is update cadence: やせるぞう at weekly against Napplee's every 3 months. Napplee's advantage is iOS requirement (11.0 vs 15.1). 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Napplee ships an update every 3 months, やせるぞう weekly. The most recent releases landed on October 19, 2026 and October 9, 2026 respectively.

Scorecard2 real differences · 4 level
Napplee versus やせるぞう: the parameters behind the verdict, then further details
ParameterNappleeやせるぞう
PriceFreeFree
Update frequencyEvery 3 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS11.0 — better15.1
Further details — not scored
Size60 MB29 MB
Age rating12+4+
Developer株式会社リキッド・デザイン・システムズYuichi Kitajima

In-app purchases

None

Napplee

No in-app purchases

None

やせるぞう

No in-app purchases

Questions

Is Napplee free?
Napplee is free to download, with no in-app purchases.
Is やせるぞう free?
やせるぞう is free to download, with no in-app purchases.
Do Napplee or やせるぞう have ads?
Neither Napplee nor やせるぞう shows ads.
Which is updated more often, Napplee or やせるぞう?
Napplee ships an update every 3 months, and やせるぞう weekly. Most recently, Napplee was updated on October 19, 2026 and やせるぞう on October 9, 2026.

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