Ghost Weight vs MetaboLog
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ghost Weight
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【課金なし!広告なし】Ghost Weightは、基準日からの差分だけを表示する新しい体重管理アプリです! あなたが入力するのは体重計の数字ですが、アプリが表示するのは「基準日からの差分(例:-0.5kg)」だけ。 「〇〇kg」という重い現実(絶対値)は表示されません。 「昨日より減った!」「先週よりこれだけ変わった!」というポジティブな変化だけに集中できるから、モチベーションが途切れず、自然と習慣が続きます。Face ID / Touch IDによる生体認証ロックを標準装備で、友人や家族に画面を見られても、あなたの本当の体重を知ることは不可能です。数字の呪縛から解放され、心軽やかに健康管理を始めましょう。 【主な機能】 ・差分入力: 実際の体重を見ずに記録完了 ・トレンドグラフ: 「0」を基準にした折れ線グラフで成果を可視化 ・スマートカレンダー: 記録漏れを一目で確認 ・完全ローカル保存: データはあなたの端末だけのもの ・安心バックアップ: 機種変更時もデータを引き継ぎ可能 【こんな方におすすめ】 ・体重の数字を見るのが怖くて、現実逃避してしまう方 ・家族やパートナーに絶対に体重を知られたくない方 ・自分を責めずに、自分のペースで身体を整えたい方
MetaboLog
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"Full-on dieting is exhausting. But I'd like to be just a little more mindful." Metabolog is a simple weight tracking app for diet and health care — made for exactly that feeling. Log your weight quickly, glance at the graph, and you're done. Easy weight management that fits into your daily health routine. **Your buddy Metabolog Man cheers you on** Every time you log your weight, Metabolog Man has something to say. Lost weight? Gained a little? Hit your goal? Haven't opened the app in a while? He responds differently to each situation, with multiple phrases that appear at random. He never lectures you — he just quietly roots for you. Prefer a cleaner look? Hide him in settings. **Keep the streak going — he gets emotional** Hit a milestone and Metabolog Man has something special to say. We'll leave it at that. **Features** · Quick weight logging (pick any date, so you can catch up on missed days) · See your change from last time and distance from your goal at a glance · Graph view with flexible time ranges (All / 1 Year / 1 Month / 1 Week) · Highlights for max and min weight within the selected period · Special messages at streak milestones · Edit or delete past entries · Set a target weight · Switch between kg and lb · Available in Japanese and English Use it as part of your diet, health care, or daily weight management. **Perfect for you if...** · You want a relaxed way to track diet and health · You can't log every single day, but want to check in occasionally · You just want to see the rough trend, not obsess over details · You prefer relaxed, pressure-free goal-setting · You like health apps that are clean and easy to use All data is stored locally on your device — works offline, no account required. Let's build that "little by little" diet and health care habit together.
Screenshots
Verdict
The clearest difference is update cadence: Ghost Weight at daily against MetaboLog's every 2 days. MetaboLog's advantage is iOS requirement (13.0 vs 16.0). 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.
Ghost Weight ships an update daily, MetaboLog every 2 days. The most recent releases landed on October 24, 2026 and October 5, 2026 respectively.
| Parameter | Ghost Weight | MetaboLog |
|---|---|---|
| Price | Free | Free |
| Update frequency | Daily — better | Every 2 days |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 14 MB | 21 MB |
| Age rating | 4+ | 12+ |
| Developer | Shoho Kozawa | Toshimasa Ueki |
In-app purchases
Ghost Weight
No in-app purchases
MetaboLog
No in-app purchases









