WB Body vs OnninGym
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
WB Body
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WB Body is our project to break the mainstream way of measuring body composition. Our project leader has bought countless types of body fat scales, whether it is a four-point or eight-point system, Korean, Chinese, or Japanese brands, they all have the same problem, which is that the related hardware is generally very expensive. We can't stand that consumers pay a high price but don't get the accuracy and stability they want. So we developed the algorithm for WB Body to reduce the measurement cost and make it affordable for ordinary people. With just two pieces of data, we can calculate accurate body composition analysis. According to our internal testing, the core calculation part is at least three data points with a high level of correlation and consistency with professional body fat scale brand InBody, with a correlation coefficient of over 99%.* * Muscle mass 99.26% Water content 99.79% Protein mass 99.33%
OnninGym
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OnninGym 是專為重訓玩家打造的訓練紀錄 app。在 iPhone 上設計你的課表,戴上 Apple Watch 走進健身房,一組組打勾、自動記錄重量與次數,訓練結束後同步回手機分析。 不需要每次拿出手機翻紀錄,所有操作在手腕上完成。 【核心功能】 iPhone 端: - 課表自由編輯,可拖曳排序動作 - 內建模板:胸/背/腿/肩 單肌群,以及胸+背、腿+肩、背+肩、胸+肩 組合 - 課表編輯支援暖身組/工作組分離配置,自動切換重量 - 訓練紀錄一目了然,個人最佳(PR)自動偵測 - 訓練摘要圖表:心率折線、容量長條、容量趨勢 - 飲食試算:Mifflin-St Jeor BMR + TDEE 公式,支援減脂/維持/增肌 - 三大營養素自訂攝取,可直接輸入克數 - 每週彈性排程,可設定每日提醒時間 - 恢復狀態追蹤,以衰減模型計算各肌群疲勞 Apple Watch 端: - 開始訓練即啟動 Workout Session,即時心率/卡路里 - 重量、次數分頁輸入,大字易讀,Digital Crown 微調 - 第一組輸入重量後自動沿用,只需要調次數 - 暖身組做完,自動切換到工作組重量 - 推不滿目標次數時,系統建議降階 5%,一鍵套用 - 組間休息倒數,可快速 +15s/+30s/+1m - 器材排隊時可暫緩當前動作,稍後從待做清單拉回 - 訓練結束自動同步回 iPhone 【適合誰】 - 重訓初學到進階,自由重量或機械訓練都適用 - 想擺脫筆記本/紙筆紀錄、又不想用過於複雜的健身 app - 配戴 Apple Watch,希望整合心率與運動 Ring - 在意組間休息精準度與訓練容量趨勢 【隱私】 OnninGym 不收集任何個人資料,不上傳訓練紀錄到雲端。所有資料儲存在你的 iPhone 與 Apple Watch 本機。HealthKit 整合僅用於讀取心率/卡路里、寫入訓練到「健康」app,完全在裝置內處理。 【技術規格】 - 需要 iOS 18+ / watchOS 11+ - 整合 HealthKit、WatchConnectivity、SwiftData - 全繁體中文介面
Screenshots
Verdict
The clearest difference is update cadence: OnninGym at daily against WB Body's every 3 months. WB Body's advantage is iOS requirement (16.0 vs 18.0). 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.
WB Body ships an update every 3 months, OnninGym daily. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.
| Parameter | WB Body | OnninGym |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months | Daily — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, Apple Watch |
| Requires iOS | 16.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 1 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Shun Man Leung | WEN CHENG YEH |
In-app purchases
WB Body
No in-app purchases
OnninGym
No in-app purchases









