MuscleBuildingRecorderApp

MuscleBuildingRecorderApp

by Kiichi Yokokawa

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Free
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About

【Strength Training Log - Heart Rate Workout Tracker】 Track your sets, rest periods, heart rate, and workout history in one place. MuscleBuildingRecorder works with iPhone and Apple Watch to help you manage exercise time, rest time, exercise details, load, reps, notes, and heart rate during training. MuscleBuildingRecorder is designed for people who want more than a simple stopwatch. It helps you turn each workout into a clear training record, with separate tracking for work and rest phases, heart rate data, notes, tags, presets, and session history. Main Features Real-Time Heart Rate Monitoring • Supports Apple Watch, Bluetooth heart rate monitors, and compatible AirPods Pro heart rate sensors • Displays heart rate in real time during workouts • Records average, maximum, and minimum heart rate • Helps you review workout intensity and recovery trends Strength Training Timer • Separately tracks workout time and rest time • Manages sets and workout cycles • Shows total workout time, work time, and rest time • Supports rest notification settings • Supports session restoration if a workout is interrupted Detailed Workout Logging • Record exercise name, category, load, and reps • Save notes for each set • Add tags and fatigue details for better review • Manage exercises by category, such as chest, back, and legs • Use presets to start frequently used routines faster History and Export • View summaries for each session • Check heart rate graphs to review workout intensity • Browse past workout history • Review and export records across multiple days • Export data in CSV and JSON formats Apple Watch Integration • Control workouts from Apple Watch • Sync timer and phase changes between iPhone and Apple Watch • Track heart rate while continuing your session • Continue workout recording in the background • Supports exercise input and workout actions from Apple Watch Live Activities • Check your workout status from the Lock Screen or Dynamic Island • View the current work/rest phase • Quickly see elapsed time and heart rate Customization • Adjust button layout • Configure rest notifications • Manage tag presets • Create and edit workout presets Recommended For • People who want to record each strength training set accurately • Lifters who manage load, reps, and rest time • Apple Watch users who want heart rate data during workouts • Anyone who wants to review workout history and improve over time • Users who want to export workout data in CSV or JSON format • Anyone looking for more than a basic workout timer Pro Benefits • Ad-free workout experience • View results immediately after completing a workout • Access to selected customization features Pro is available as a monthly subscription or a one-time purchase. Data Privacy • Workout records are primarily stored locally on your device • HealthKit access requires your permission • Recorded data can be exported in CSV or JSON format when needed • Cloud sync is not currently provided Requirements • iOS 17.0 or later • watchOS 10.0 or later when using Apple Watch • HealthKit permission for heart rate tracking • Bluetooth permission when using a Bluetooth heart rate monitor Simple Workflow 1. Select an exercise 2. Enter load and reps 3. Start the set 4. Track time and heart rate 5. Manage rest time 6. Move to the next set or finish the session 7. Review your summary and history Record your strength training more accurately and make every workout easier to review. With MuscleBuildingRecorder, your training becomes useful data you can build on. 【Support】 For questions or requests, please contact us from the app settings. 【Terms of Use】 https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ 【Privacy Policy】 https://yok1012.github.io/MuscleBuildingRecorder/
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What's New in MuscleBuildingRecorderApp

1.5

July 12, 2026

■ Unified Exporting • Organized into three types: "Complete Data (JSON)," "Complete Data (CSV/ZIP)," and "Summary (CSV)." • Complete Data includes all exercises, sets, heart rate, sensors, and notes, manageable in a single file. ■ Heart Rate Acquisition Improvements • Supported heart rate monitoring for AirPods Pro 3 / Powerbeats Pro 2 (Automatic acquisition during workouts on iOS 26 or later). • Improved Bluetooth heart rate monitor searching. Connected devices are now displayed in the list. ■ Rest Period Improvements • Redesigned the "Next Menu Input" screen. The input form is now placed at the top, with a rest timer and memo field added. • 30-second/60-second rest notifications now sound even while the app is open. ■ AI Analysis Enhancements *Requires personal API key • Individual workouts in your history can now be analyzed by AI ("AI Analysis for this session" in history details). • AI now utilizes RPE (perceived exertion), tags, next-step plans, and notes recorded during rest periods for analysis. • Heart rate recovery during rest (how much the heart rate dropped) is now reflected in the analysis, enabling advice on recovery capacity and fatigue levels. • Added a "Previous Versions" feature to AI Knowledge. You can restore it to a previous state at any time. • Training knowledge can now be imported into AI Knowledge from external MCP servers (register via AI settings). The AI analysis in this app is an optional feature. Please review the following points: 1. AI analysis uses API keys (Anthropic/OpenAI/Google) obtained by the user. Even if a key is not set, all core functions such as recording, timers, and heart rate measurement will remain fully operational. 2. Only statistical summaries of workout records are sent, and explicit user consent is obtained before the first execution. Data does not pass through the developer’s server. 3. This is not a free-form conversational chatbot; it only generates structured analysis reports based on the user’s own records. 4. The MCP import function manually retrieves information from external servers registered by the user, with a preview confirmation of the content before import. Authentication credentials are stored exclusively in the device’s Keychain.

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$0.991 Month
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$4.99

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